/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/weaver-benchmarks/generated/test/easy10.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 18:45:19,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 18:45:19,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 18:45:19,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 18:45:20,005 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 [2021-07-09 18:45:20,032 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 18:45:20,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 18:45:20,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 18:45:20,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 18:45:20,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 18:45:20,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 18:45:20,035 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 18:45:20,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 18:45:20,035 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 18:45:20,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 18:45:20,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 18:45:20,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 18:45:20,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 18:45:20,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 18:45:20,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 18:45:20,036 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 18:45:20,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 18:45:20,037 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 18:45:20,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 18:45:20,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 18:45:20,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 18:45:20,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 18:45:20,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 18:45:20,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 18:45:20,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 18:45:20,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 18:45:20,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 18:45:20,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 18:45:20,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 18:45:20,044 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 18:45:20,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 18:45:20,044 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 18:45:20,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 18:45:20,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 18:45:20,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 18:45:20,314 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 18:45:20,321 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 18:45:20,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-07-09 18:45:20,322 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-07-09 18:45:20,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 18:45:20,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 18:45:20,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 18:45:20,368 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 18:45:20,368 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 18:45:20,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 06:45:20" (1/1) ... [2021-07-09 18:45:20,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 06:45:20" (1/1) ... [2021-07-09 18:45:20,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 18:45:20,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 18:45:20,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 18:45:20,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 18:45:20,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 06:45:20" (1/1) ... [2021-07-09 18:45:20,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 06:45:20" (1/1) ... [2021-07-09 18:45:20,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 06:45:20" (1/1) ... [2021-07-09 18:45:20,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 06:45:20" (1/1) ... [2021-07-09 18:45:20,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 06:45:20" (1/1) ... [2021-07-09 18:45:20,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 06:45:20" (1/1) ... [2021-07-09 18:45:20,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 06:45:20" (1/1) ... [2021-07-09 18:45:20,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 18:45:20,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 18:45:20,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 18:45:20,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 18:45:20,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 06:45:20" (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 [2021-07-09 18:45:20,455 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 18:45:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 18:45:20,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 18:45:20,455 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 18:45:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 18:45:20,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 18:45:20,456 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 18:45:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 18:45:20,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 18:45:20,456 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 18:45:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 18:45:20,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 18:45:20,456 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-09 18:45:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-09 18:45:20,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-09 18:45:20,457 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 18:45:20,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 18:45:20,591 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 18:45:20,593 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 06:45:20 BoogieIcfgContainer [2021-07-09 18:45:20,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 18:45:20,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 18:45:20,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 18:45:20,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 18:45:20,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 06:45:20" (1/2) ... [2021-07-09 18:45:20,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b1619b and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 06:45:20, skipping insertion in model container [2021-07-09 18:45:20,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 06:45:20" (2/2) ... [2021-07-09 18:45:20,613 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-07-09 18:45:20,616 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 18:45:20,617 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 18:45:20,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 18:45:20,617 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 18:45:20,679 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-09 18:45:20,694 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-07-09 18:45:20,706 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 18:45:20,707 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 18:45:20,707 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 18:45:20,707 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 18:45:20,707 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 18:45:20,707 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 18:45:20,707 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 18:45:20,707 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 18:45:20,714 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 45 transitions, 122 flow [2021-07-09 18:45:20,883 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5269 states, 5268 states have (on average 3.4994305239179955) internal successors, (18435), 5268 states have internal predecessors, (18435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 5269 states, 5268 states have (on average 3.4994305239179955) internal successors, (18435), 5268 states have internal predecessors, (18435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:20,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:20,937 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:20,937 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:20,938 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:20,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:20,944 INFO L82 PathProgramCache]: Analyzing trace with hash -633160358, now seen corresponding path program 1 times [2021-07-09 18:45:20,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:20,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392814402] [2021-07-09 18:45:20,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:21,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:21,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392814402] [2021-07-09 18:45:21,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392814402] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:21,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:21,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-09 18:45:21,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211223306] [2021-07-09 18:45:21,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 18:45:21,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:21,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 18:45:21,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 18:45:21,127 INFO L87 Difference]: Start difference. First operand has 5269 states, 5268 states have (on average 3.4994305239179955) internal successors, (18435), 5268 states have internal predecessors, (18435), 0 states have call successors, (0), 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 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:21,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:45:21,218 INFO L93 Difference]: Finished difference Result 4197 states and 14419 transitions. [2021-07-09 18:45:21,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 18:45:21,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:45:21,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:45:21,259 INFO L225 Difference]: With dead ends: 4197 [2021-07-09 18:45:21,259 INFO L226 Difference]: Without dead ends: 4197 [2021-07-09 18:45:21,261 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 18:45:21,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4197 states. [2021-07-09 18:45:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4197 to 4197. [2021-07-09 18:45:21,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4197 states, 4196 states have (on average 3.436367969494757) internal successors, (14419), 4196 states have internal predecessors, (14419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:21,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4197 states to 4197 states and 14419 transitions. [2021-07-09 18:45:21,503 INFO L78 Accepts]: Start accepts. Automaton has 4197 states and 14419 transitions. Word has length 39 [2021-07-09 18:45:21,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:45:21,504 INFO L482 AbstractCegarLoop]: Abstraction has 4197 states and 14419 transitions. [2021-07-09 18:45:21,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:21,504 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 14419 transitions. [2021-07-09 18:45:21,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:21,524 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:21,525 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:21,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 18:45:21,526 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:21,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:21,534 INFO L82 PathProgramCache]: Analyzing trace with hash -33301778, now seen corresponding path program 2 times [2021-07-09 18:45:21,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:21,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805517449] [2021-07-09 18:45:21,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:21,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:21,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805517449] [2021-07-09 18:45:21,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805517449] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:21,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:21,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-09 18:45:21,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501105164] [2021-07-09 18:45:21,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 18:45:21,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:21,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 18:45:21,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 18:45:21,583 INFO L87 Difference]: Start difference. First operand 4197 states and 14419 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:45:21,613 INFO L93 Difference]: Finished difference Result 3290 states and 11077 transitions. [2021-07-09 18:45:21,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 18:45:21,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:45:21,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:45:21,632 INFO L225 Difference]: With dead ends: 3290 [2021-07-09 18:45:21,632 INFO L226 Difference]: Without dead ends: 3290 [2021-07-09 18:45:21,633 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 18:45:21,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2021-07-09 18:45:21,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3290. [2021-07-09 18:45:21,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 3289 states have (on average 3.367892976588629) internal successors, (11077), 3289 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:21,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 11077 transitions. [2021-07-09 18:45:21,750 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 11077 transitions. Word has length 39 [2021-07-09 18:45:21,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:45:21,751 INFO L482 AbstractCegarLoop]: Abstraction has 3290 states and 11077 transitions. [2021-07-09 18:45:21,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:21,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 11077 transitions. [2021-07-09 18:45:21,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:21,761 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:21,762 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:21,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 18:45:21,762 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:21,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:21,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1266135666, now seen corresponding path program 3 times [2021-07-09 18:45:21,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:21,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385202866] [2021-07-09 18:45:21,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:22,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:22,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385202866] [2021-07-09 18:45:22,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385202866] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:22,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:22,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-09 18:45:22,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450986218] [2021-07-09 18:45:22,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-09 18:45:22,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:22,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-09 18:45:22,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-07-09 18:45:22,209 INFO L87 Difference]: Start difference. First operand 3290 states and 11077 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:45:24,602 INFO L93 Difference]: Finished difference Result 6515 states and 22109 transitions. [2021-07-09 18:45:24,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-07-09 18:45:24,602 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:45:24,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:45:24,634 INFO L225 Difference]: With dead ends: 6515 [2021-07-09 18:45:24,634 INFO L226 Difference]: Without dead ends: 6448 [2021-07-09 18:45:24,635 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1272.4ms TimeCoverageRelationStatistics Valid=319, Invalid=3221, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 18:45:24,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6448 states. [2021-07-09 18:45:24,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6448 to 3506. [2021-07-09 18:45:24,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3506 states, 3505 states have (on average 3.3703281027104137) internal successors, (11813), 3505 states have internal predecessors, (11813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:24,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 11813 transitions. [2021-07-09 18:45:24,749 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 11813 transitions. Word has length 39 [2021-07-09 18:45:24,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:45:24,749 INFO L482 AbstractCegarLoop]: Abstraction has 3506 states and 11813 transitions. [2021-07-09 18:45:24,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:24,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 11813 transitions. [2021-07-09 18:45:24,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:24,757 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:24,757 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:24,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 18:45:24,757 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:24,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:24,757 INFO L82 PathProgramCache]: Analyzing trace with hash 176755628, now seen corresponding path program 4 times [2021-07-09 18:45:24,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:24,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955674053] [2021-07-09 18:45:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:24,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:24,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955674053] [2021-07-09 18:45:24,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955674053] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:24,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:24,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-09 18:45:24,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051847871] [2021-07-09 18:45:24,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-09 18:45:24,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:24,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-09 18:45:24,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-07-09 18:45:24,989 INFO L87 Difference]: Start difference. First operand 3506 states and 11813 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:45:28,228 INFO L93 Difference]: Finished difference Result 8000 states and 27131 transitions. [2021-07-09 18:45:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-07-09 18:45:28,228 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:45:28,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:45:28,253 INFO L225 Difference]: With dead ends: 8000 [2021-07-09 18:45:28,254 INFO L226 Difference]: Without dead ends: 7957 [2021-07-09 18:45:28,255 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2122 ImplicationChecksByTransitivity, 1788.8ms TimeCoverageRelationStatistics Valid=558, Invalid=6084, Unknown=0, NotChecked=0, Total=6642 [2021-07-09 18:45:28,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7957 states. [2021-07-09 18:45:28,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7957 to 3706. [2021-07-09 18:45:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3705 states have (on average 3.3748987854251014) internal successors, (12504), 3705 states have internal predecessors, (12504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:28,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 12504 transitions. [2021-07-09 18:45:28,408 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 12504 transitions. Word has length 39 [2021-07-09 18:45:28,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:45:28,408 INFO L482 AbstractCegarLoop]: Abstraction has 3706 states and 12504 transitions. [2021-07-09 18:45:28,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:28,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 12504 transitions. [2021-07-09 18:45:28,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:28,416 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:28,416 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:28,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-09 18:45:28,416 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:28,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:28,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1603842674, now seen corresponding path program 5 times [2021-07-09 18:45:28,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:28,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323195218] [2021-07-09 18:45:28,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:28,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:28,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323195218] [2021-07-09 18:45:28,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323195218] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:28,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:28,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-09 18:45:28,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890897071] [2021-07-09 18:45:28,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-09 18:45:28,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:28,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-09 18:45:28,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-07-09 18:45:28,671 INFO L87 Difference]: Start difference. First operand 3706 states and 12504 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:31,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:45:31,683 INFO L93 Difference]: Finished difference Result 8573 states and 29254 transitions. [2021-07-09 18:45:31,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-09 18:45:31,684 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:45:31,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:45:31,708 INFO L225 Difference]: With dead ends: 8573 [2021-07-09 18:45:31,708 INFO L226 Difference]: Without dead ends: 8509 [2021-07-09 18:45:31,710 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2181 ImplicationChecksByTransitivity, 1714.9ms TimeCoverageRelationStatistics Valid=568, Invalid=6238, Unknown=0, NotChecked=0, Total=6806 [2021-07-09 18:45:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8509 states. [2021-07-09 18:45:31,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8509 to 3688. [2021-07-09 18:45:31,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 3.375915378356387) internal successors, (12447), 3687 states have internal predecessors, (12447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:31,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 12447 transitions. [2021-07-09 18:45:31,853 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 12447 transitions. Word has length 39 [2021-07-09 18:45:31,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:45:31,854 INFO L482 AbstractCegarLoop]: Abstraction has 3688 states and 12447 transitions. [2021-07-09 18:45:31,854 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:31,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 12447 transitions. [2021-07-09 18:45:31,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:31,861 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:31,861 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:31,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-09 18:45:31,861 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:31,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:31,861 INFO L82 PathProgramCache]: Analyzing trace with hash -2012658290, now seen corresponding path program 6 times [2021-07-09 18:45:31,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:31,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148619015] [2021-07-09 18:45:31,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:32,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:32,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148619015] [2021-07-09 18:45:32,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148619015] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:32,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:32,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-09 18:45:32,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772907815] [2021-07-09 18:45:32,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-09 18:45:32,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:32,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-09 18:45:32,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-07-09 18:45:32,081 INFO L87 Difference]: Start difference. First operand 3688 states and 12447 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:35,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:45:35,413 INFO L93 Difference]: Finished difference Result 8145 states and 27755 transitions. [2021-07-09 18:45:35,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-07-09 18:45:35,414 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:45:35,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:45:35,443 INFO L225 Difference]: With dead ends: 8145 [2021-07-09 18:45:35,444 INFO L226 Difference]: Without dead ends: 8015 [2021-07-09 18:45:35,445 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2509 ImplicationChecksByTransitivity, 1874.7ms TimeCoverageRelationStatistics Valid=626, Invalid=7030, Unknown=0, NotChecked=0, Total=7656 [2021-07-09 18:45:35,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8015 states. [2021-07-09 18:45:35,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8015 to 3664. [2021-07-09 18:45:35,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 3663 states have (on average 3.375102375102375) internal successors, (12363), 3663 states have internal predecessors, (12363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 12363 transitions. [2021-07-09 18:45:35,556 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 12363 transitions. Word has length 39 [2021-07-09 18:45:35,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:45:35,556 INFO L482 AbstractCegarLoop]: Abstraction has 3664 states and 12363 transitions. [2021-07-09 18:45:35,559 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 12363 transitions. [2021-07-09 18:45:35,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:35,567 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:35,567 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:35,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-09 18:45:35,567 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:35,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:35,568 INFO L82 PathProgramCache]: Analyzing trace with hash 957753594, now seen corresponding path program 7 times [2021-07-09 18:45:35,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:35,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759201170] [2021-07-09 18:45:35,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:35,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:35,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759201170] [2021-07-09 18:45:35,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759201170] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:35,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:35,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:45:35,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621724561] [2021-07-09 18:45:35,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:45:35,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:35,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:45:35,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:45:35,781 INFO L87 Difference]: Start difference. First operand 3664 states and 12363 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:37,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:45:37,977 INFO L93 Difference]: Finished difference Result 6771 states and 22942 transitions. [2021-07-09 18:45:37,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-09 18:45:37,977 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:45:37,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:45:37,993 INFO L225 Difference]: With dead ends: 6771 [2021-07-09 18:45:37,993 INFO L226 Difference]: Without dead ends: 6704 [2021-07-09 18:45:37,995 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1220 ImplicationChecksByTransitivity, 1194.7ms TimeCoverageRelationStatistics Valid=371, Invalid=4051, Unknown=0, NotChecked=0, Total=4422 [2021-07-09 18:45:38,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6704 states. [2021-07-09 18:45:38,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6704 to 3680. [2021-07-09 18:45:38,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3679 states have (on average 3.371296547974993) internal successors, (12403), 3679 states have internal predecessors, (12403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 12403 transitions. [2021-07-09 18:45:38,082 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 12403 transitions. Word has length 39 [2021-07-09 18:45:38,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:45:38,082 INFO L482 AbstractCegarLoop]: Abstraction has 3680 states and 12403 transitions. [2021-07-09 18:45:38,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:38,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 12403 transitions. [2021-07-09 18:45:38,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:38,088 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:38,088 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:38,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-09 18:45:38,089 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:38,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:38,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1894322408, now seen corresponding path program 8 times [2021-07-09 18:45:38,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:38,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40390623] [2021-07-09 18:45:38,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:38,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:38,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40390623] [2021-07-09 18:45:38,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40390623] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:38,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:38,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:45:38,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521507459] [2021-07-09 18:45:38,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:45:38,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:38,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:45:38,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:45:38,312 INFO L87 Difference]: Start difference. First operand 3680 states and 12403 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:41,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:45:41,475 INFO L93 Difference]: Finished difference Result 8010 states and 27138 transitions. [2021-07-09 18:45:41,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-07-09 18:45:41,475 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:45:41,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:45:41,496 INFO L225 Difference]: With dead ends: 8010 [2021-07-09 18:45:41,497 INFO L226 Difference]: Without dead ends: 7967 [2021-07-09 18:45:41,499 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2527 ImplicationChecksByTransitivity, 1822.2ms TimeCoverageRelationStatistics Valid=617, Invalid=7215, Unknown=0, NotChecked=0, Total=7832 [2021-07-09 18:45:41,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7967 states. [2021-07-09 18:45:41,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7967 to 3702. [2021-07-09 18:45:41,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3702 states, 3701 states have (on average 3.368819238043772) internal successors, (12468), 3701 states have internal predecessors, (12468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 12468 transitions. [2021-07-09 18:45:41,595 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 12468 transitions. Word has length 39 [2021-07-09 18:45:41,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:45:41,595 INFO L482 AbstractCegarLoop]: Abstraction has 3702 states and 12468 transitions. [2021-07-09 18:45:41,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:41,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 12468 transitions. [2021-07-09 18:45:41,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:41,603 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:41,603 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:41,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-09 18:45:41,603 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:41,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:41,603 INFO L82 PathProgramCache]: Analyzing trace with hash 620046586, now seen corresponding path program 9 times [2021-07-09 18:45:41,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:41,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684832865] [2021-07-09 18:45:41,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:41,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:41,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684832865] [2021-07-09 18:45:41,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684832865] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:41,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:41,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:45:41,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484928415] [2021-07-09 18:45:41,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:45:41,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:41,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:45:41,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:45:41,809 INFO L87 Difference]: Start difference. First operand 3702 states and 12468 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:45,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:45:45,094 INFO L93 Difference]: Finished difference Result 8583 states and 29261 transitions. [2021-07-09 18:45:45,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-07-09 18:45:45,094 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:45:45,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:45:45,114 INFO L225 Difference]: With dead ends: 8583 [2021-07-09 18:45:45,114 INFO L226 Difference]: Without dead ends: 8519 [2021-07-09 18:45:45,116 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2452 ImplicationChecksByTransitivity, 1819.9ms TimeCoverageRelationStatistics Valid=606, Invalid=7050, Unknown=0, NotChecked=0, Total=7656 [2021-07-09 18:45:45,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8519 states. [2021-07-09 18:45:45,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8519 to 3672. [2021-07-09 18:45:45,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 3671 states have (on average 3.374284935984745) internal successors, (12387), 3671 states have internal predecessors, (12387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 12387 transitions. [2021-07-09 18:45:45,230 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 12387 transitions. Word has length 39 [2021-07-09 18:45:45,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:45:45,230 INFO L482 AbstractCegarLoop]: Abstraction has 3672 states and 12387 transitions. [2021-07-09 18:45:45,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:45,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 12387 transitions. [2021-07-09 18:45:45,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:45,237 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:45,238 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:45,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-09 18:45:45,238 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:45,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:45,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1142798612, now seen corresponding path program 10 times [2021-07-09 18:45:45,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:45,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733941314] [2021-07-09 18:45:45,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:45,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:45,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733941314] [2021-07-09 18:45:45,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733941314] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:45,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:45,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:45:45,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698421331] [2021-07-09 18:45:45,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:45:45,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:45,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:45:45,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:45:45,462 INFO L87 Difference]: Start difference. First operand 3672 states and 12387 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:46,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:45:46,772 INFO L93 Difference]: Finished difference Result 5369 states and 18355 transitions. [2021-07-09 18:45:46,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-09 18:45:46,773 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:45:46,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:45:46,786 INFO L225 Difference]: With dead ends: 5369 [2021-07-09 18:45:46,786 INFO L226 Difference]: Without dead ends: 5302 [2021-07-09 18:45:46,787 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 693.6ms TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 18:45:46,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5302 states. [2021-07-09 18:45:46,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5302 to 3680. [2021-07-09 18:45:46,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3679 states have (on average 3.371296547974993) internal successors, (12403), 3679 states have internal predecessors, (12403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 12403 transitions. [2021-07-09 18:45:46,889 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 12403 transitions. Word has length 39 [2021-07-09 18:45:46,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:45:46,889 INFO L482 AbstractCegarLoop]: Abstraction has 3680 states and 12403 transitions. [2021-07-09 18:45:46,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 12403 transitions. [2021-07-09 18:45:46,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:46,897 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:46,897 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:46,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-09 18:45:46,898 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:46,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:46,898 INFO L82 PathProgramCache]: Analyzing trace with hash 750849930, now seen corresponding path program 11 times [2021-07-09 18:45:46,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:46,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301068773] [2021-07-09 18:45:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:47,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:47,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301068773] [2021-07-09 18:45:47,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301068773] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:47,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:47,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:45:47,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179849336] [2021-07-09 18:45:47,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:45:47,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:47,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:45:47,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:45:47,121 INFO L87 Difference]: Start difference. First operand 3680 states and 12403 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:45:48,481 INFO L93 Difference]: Finished difference Result 5357 states and 18315 transitions. [2021-07-09 18:45:48,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-09 18:45:48,482 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:45:48,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:45:48,494 INFO L225 Difference]: With dead ends: 5357 [2021-07-09 18:45:48,494 INFO L226 Difference]: Without dead ends: 5294 [2021-07-09 18:45:48,495 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 765.5ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-07-09 18:45:48,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5294 states. [2021-07-09 18:45:48,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5294 to 3672. [2021-07-09 18:45:48,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3672 states, 3671 states have (on average 3.3731953146281666) internal successors, (12383), 3671 states have internal predecessors, (12383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 12383 transitions. [2021-07-09 18:45:48,589 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 12383 transitions. Word has length 39 [2021-07-09 18:45:48,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:45:48,591 INFO L482 AbstractCegarLoop]: Abstraction has 3672 states and 12383 transitions. [2021-07-09 18:45:48,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 12383 transitions. [2021-07-09 18:45:48,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:48,597 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:48,598 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:48,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-07-09 18:45:48,598 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:48,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:48,598 INFO L82 PathProgramCache]: Analyzing trace with hash 974207546, now seen corresponding path program 12 times [2021-07-09 18:45:48,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:48,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317627372] [2021-07-09 18:45:48,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:48,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:48,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317627372] [2021-07-09 18:45:48,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317627372] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:48,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:48,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:45:48,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466382886] [2021-07-09 18:45:48,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:45:48,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:48,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:45:48,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:45:48,796 INFO L87 Difference]: Start difference. First operand 3672 states and 12383 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:50,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:45:50,766 INFO L93 Difference]: Finished difference Result 5886 states and 20058 transitions. [2021-07-09 18:45:50,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-07-09 18:45:50,767 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:45:50,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:45:50,780 INFO L225 Difference]: With dead ends: 5886 [2021-07-09 18:45:50,780 INFO L226 Difference]: Without dead ends: 5843 [2021-07-09 18:45:50,781 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 1181.4ms TimeCoverageRelationStatistics Valid=372, Invalid=3788, Unknown=0, NotChecked=0, Total=4160 [2021-07-09 18:45:50,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5843 states. [2021-07-09 18:45:50,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5843 to 3680. [2021-07-09 18:45:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3679 states have (on average 3.371296547974993) internal successors, (12403), 3679 states have internal predecessors, (12403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:50,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 12403 transitions. [2021-07-09 18:45:50,877 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 12403 transitions. Word has length 39 [2021-07-09 18:45:50,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:45:50,877 INFO L482 AbstractCegarLoop]: Abstraction has 3680 states and 12403 transitions. [2021-07-09 18:45:50,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:50,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 12403 transitions. [2021-07-09 18:45:50,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:50,884 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:50,884 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:50,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-07-09 18:45:50,884 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:50,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:50,885 INFO L82 PathProgramCache]: Analyzing trace with hash -806390756, now seen corresponding path program 13 times [2021-07-09 18:45:50,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:50,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157671846] [2021-07-09 18:45:50,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:51,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:51,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:51,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157671846] [2021-07-09 18:45:51,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157671846] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:51,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:51,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:45:51,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555375284] [2021-07-09 18:45:51,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:45:51,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:51,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:45:51,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:45:51,072 INFO L87 Difference]: Start difference. First operand 3680 states and 12403 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:53,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:45:53,278 INFO L93 Difference]: Finished difference Result 6732 states and 22949 transitions. [2021-07-09 18:45:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-07-09 18:45:53,279 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:45:53,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:45:53,310 INFO L225 Difference]: With dead ends: 6732 [2021-07-09 18:45:53,310 INFO L226 Difference]: Without dead ends: 6680 [2021-07-09 18:45:53,311 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1378 ImplicationChecksByTransitivity, 1279.8ms TimeCoverageRelationStatistics Valid=407, Invalid=4423, Unknown=0, NotChecked=0, Total=4830 [2021-07-09 18:45:53,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2021-07-09 18:45:53,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 3674. [2021-07-09 18:45:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3673 states have (on average 3.3727198475360742) internal successors, (12388), 3673 states have internal predecessors, (12388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 12388 transitions. [2021-07-09 18:45:53,390 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 12388 transitions. Word has length 39 [2021-07-09 18:45:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:45:53,390 INFO L482 AbstractCegarLoop]: Abstraction has 3674 states and 12388 transitions. [2021-07-09 18:45:53,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 12388 transitions. [2021-07-09 18:45:53,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:53,397 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:53,397 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:53,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-07-09 18:45:53,398 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:53,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:53,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1892691116, now seen corresponding path program 14 times [2021-07-09 18:45:53,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:53,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611487766] [2021-07-09 18:45:53,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:53,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:53,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611487766] [2021-07-09 18:45:53,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611487766] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:53,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:53,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:45:53,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223502111] [2021-07-09 18:45:53,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:45:53,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:53,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:45:53,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:45:53,586 INFO L87 Difference]: Start difference. First operand 3674 states and 12388 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:54,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:45:54,949 INFO L93 Difference]: Finished difference Result 5446 states and 18508 transitions. [2021-07-09 18:45:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-09 18:45:54,949 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:45:54,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:45:54,961 INFO L225 Difference]: With dead ends: 5446 [2021-07-09 18:45:54,961 INFO L226 Difference]: Without dead ends: 5391 [2021-07-09 18:45:54,961 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 747.1ms TimeCoverageRelationStatistics Valid=240, Invalid=2210, Unknown=0, NotChecked=0, Total=2450 [2021-07-09 18:45:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5391 states. [2021-07-09 18:45:55,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5391 to 3676. [2021-07-09 18:45:55,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 3.371700680272109) internal successors, (12391), 3675 states have internal predecessors, (12391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 12391 transitions. [2021-07-09 18:45:55,033 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 12391 transitions. Word has length 39 [2021-07-09 18:45:55,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:45:55,033 INFO L482 AbstractCegarLoop]: Abstraction has 3676 states and 12391 transitions. [2021-07-09 18:45:55,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:55,033 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 12391 transitions. [2021-07-09 18:45:55,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:55,040 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:55,040 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:55,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-07-09 18:45:55,040 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:55,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:55,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1229623958, now seen corresponding path program 15 times [2021-07-09 18:45:55,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:55,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797352220] [2021-07-09 18:45:55,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:55,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:55,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797352220] [2021-07-09 18:45:55,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797352220] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:55,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:55,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:45:55,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658667489] [2021-07-09 18:45:55,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:45:55,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:55,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:45:55,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:45:55,230 INFO L87 Difference]: Start difference. First operand 3676 states and 12391 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:56,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:45:56,829 INFO L93 Difference]: Finished difference Result 6214 states and 21239 transitions. [2021-07-09 18:45:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-09 18:45:56,829 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:45:56,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:45:56,843 INFO L225 Difference]: With dead ends: 6214 [2021-07-09 18:45:56,843 INFO L226 Difference]: Without dead ends: 6150 [2021-07-09 18:45:56,844 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 852.3ms TimeCoverageRelationStatistics Valid=267, Invalid=2595, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:45:56,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2021-07-09 18:45:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 3670. [2021-07-09 18:45:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3670 states, 3669 states have (on average 3.373671300081766) internal successors, (12378), 3669 states have internal predecessors, (12378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:56,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3670 states to 3670 states and 12378 transitions. [2021-07-09 18:45:56,922 INFO L78 Accepts]: Start accepts. Automaton has 3670 states and 12378 transitions. Word has length 39 [2021-07-09 18:45:56,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:45:56,923 INFO L482 AbstractCegarLoop]: Abstraction has 3670 states and 12378 transitions. [2021-07-09 18:45:56,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:45:56,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3670 states and 12378 transitions. [2021-07-09 18:45:56,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:45:56,929 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:45:56,929 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:45:56,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-07-09 18:45:56,929 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:45:56,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:45:56,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1012424364, now seen corresponding path program 16 times [2021-07-09 18:45:56,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:45:56,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204165309] [2021-07-09 18:45:56,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:45:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:45:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:45:57,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:45:57,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204165309] [2021-07-09 18:45:57,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204165309] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:45:57,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:45:57,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:45:57,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367447295] [2021-07-09 18:45:57,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:45:57,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:45:57,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:45:57,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:45:57,112 INFO L87 Difference]: Start difference. First operand 3670 states and 12378 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:00,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:00,679 INFO L93 Difference]: Finished difference Result 8269 states and 28029 transitions. [2021-07-09 18:46:00,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-07-09 18:46:00,679 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:00,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:00,698 INFO L225 Difference]: With dead ends: 8269 [2021-07-09 18:46:00,698 INFO L226 Difference]: Without dead ends: 8132 [2021-07-09 18:46:00,699 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2952 ImplicationChecksByTransitivity, 1979.3ms TimeCoverageRelationStatistics Valid=681, Invalid=8249, Unknown=0, NotChecked=0, Total=8930 [2021-07-09 18:46:00,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8132 states. [2021-07-09 18:46:00,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8132 to 3674. [2021-07-09 18:46:00,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3673 states have (on average 3.3727198475360742) internal successors, (12388), 3673 states have internal predecessors, (12388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 12388 transitions. [2021-07-09 18:46:00,790 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 12388 transitions. Word has length 39 [2021-07-09 18:46:00,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:00,790 INFO L482 AbstractCegarLoop]: Abstraction has 3674 states and 12388 transitions. [2021-07-09 18:46:00,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 12388 transitions. [2021-07-09 18:46:00,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:00,797 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:00,797 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:00,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-07-09 18:46:00,797 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:00,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:00,798 INFO L82 PathProgramCache]: Analyzing trace with hash -482466536, now seen corresponding path program 17 times [2021-07-09 18:46:00,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:00,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863431940] [2021-07-09 18:46:00,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:00,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:00,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:00,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863431940] [2021-07-09 18:46:00,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863431940] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:00,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:00,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:00,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97108146] [2021-07-09 18:46:00,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:00,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:00,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:00,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:00,978 INFO L87 Difference]: Start difference. First operand 3674 states and 12388 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:02,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:02,857 INFO L93 Difference]: Finished difference Result 5915 states and 20130 transitions. [2021-07-09 18:46:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-07-09 18:46:02,858 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:02,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:02,870 INFO L225 Difference]: With dead ends: 5915 [2021-07-09 18:46:02,870 INFO L226 Difference]: Without dead ends: 5851 [2021-07-09 18:46:02,870 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 1134.4ms TimeCoverageRelationStatistics Valid=347, Invalid=3559, Unknown=0, NotChecked=0, Total=3906 [2021-07-09 18:46:02,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5851 states. [2021-07-09 18:46:02,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5851 to 3674. [2021-07-09 18:46:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3674 states, 3673 states have (on average 3.3727198475360742) internal successors, (12388), 3673 states have internal predecessors, (12388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:02,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3674 states to 3674 states and 12388 transitions. [2021-07-09 18:46:02,943 INFO L78 Accepts]: Start accepts. Automaton has 3674 states and 12388 transitions. Word has length 39 [2021-07-09 18:46:02,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:02,943 INFO L482 AbstractCegarLoop]: Abstraction has 3674 states and 12388 transitions. [2021-07-09 18:46:02,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:02,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3674 states and 12388 transitions. [2021-07-09 18:46:02,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:02,949 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:02,949 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:02,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-07-09 18:46:02,949 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:02,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:02,949 INFO L82 PathProgramCache]: Analyzing trace with hash 436017034, now seen corresponding path program 18 times [2021-07-09 18:46:02,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:02,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962656450] [2021-07-09 18:46:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:03,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:03,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962656450] [2021-07-09 18:46:03,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962656450] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:03,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:03,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:03,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960839985] [2021-07-09 18:46:03,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:03,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:03,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:03,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:03,124 INFO L87 Difference]: Start difference. First operand 3674 states and 12388 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:04,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:04,471 INFO L93 Difference]: Finished difference Result 5506 states and 18666 transitions. [2021-07-09 18:46:04,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 18:46:04,471 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:04,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:04,482 INFO L225 Difference]: With dead ends: 5506 [2021-07-09 18:46:04,483 INFO L226 Difference]: Without dead ends: 5451 [2021-07-09 18:46:04,483 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 727.6ms TimeCoverageRelationStatistics Valid=222, Invalid=2130, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 18:46:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5451 states. [2021-07-09 18:46:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5451 to 3680. [2021-07-09 18:46:04,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3680 states, 3679 states have (on average 3.3707529219896712) internal successors, (12401), 3679 states have internal predecessors, (12401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:04,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3680 states to 3680 states and 12401 transitions. [2021-07-09 18:46:04,553 INFO L78 Accepts]: Start accepts. Automaton has 3680 states and 12401 transitions. Word has length 39 [2021-07-09 18:46:04,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:04,554 INFO L482 AbstractCegarLoop]: Abstraction has 3680 states and 12401 transitions. [2021-07-09 18:46:04,554 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:04,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3680 states and 12401 transitions. [2021-07-09 18:46:04,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:04,559 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:04,560 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:04,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-07-09 18:46:04,560 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:04,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:04,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1608669256, now seen corresponding path program 19 times [2021-07-09 18:46:04,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:04,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384068765] [2021-07-09 18:46:04,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:04,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:04,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:04,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384068765] [2021-07-09 18:46:04,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384068765] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:04,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:04,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:04,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666414327] [2021-07-09 18:46:04,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:04,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:04,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:04,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:04,733 INFO L87 Difference]: Start difference. First operand 3680 states and 12401 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:06,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:06,332 INFO L93 Difference]: Finished difference Result 6334 states and 21534 transitions. [2021-07-09 18:46:06,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 18:46:06,333 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:06,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:06,347 INFO L225 Difference]: With dead ends: 6334 [2021-07-09 18:46:06,348 INFO L226 Difference]: Without dead ends: 6274 [2021-07-09 18:46:06,348 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 847.5ms TimeCoverageRelationStatistics Valid=268, Invalid=2702, Unknown=0, NotChecked=0, Total=2970 [2021-07-09 18:46:06,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6274 states. [2021-07-09 18:46:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6274 to 3678. [2021-07-09 18:46:06,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 3677 states have (on average 3.3712265433777535) internal successors, (12396), 3677 states have internal predecessors, (12396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:06,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 12396 transitions. [2021-07-09 18:46:06,430 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 12396 transitions. Word has length 39 [2021-07-09 18:46:06,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:06,430 INFO L482 AbstractCegarLoop]: Abstraction has 3678 states and 12396 transitions. [2021-07-09 18:46:06,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:06,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 12396 transitions. [2021-07-09 18:46:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:06,436 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:06,436 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:06,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-07-09 18:46:06,437 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:06,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:06,437 INFO L82 PathProgramCache]: Analyzing trace with hash -470897286, now seen corresponding path program 20 times [2021-07-09 18:46:06,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:06,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079486002] [2021-07-09 18:46:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:06,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:06,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079486002] [2021-07-09 18:46:06,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079486002] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:06,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:06,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-09 18:46:06,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174719509] [2021-07-09 18:46:06,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-09 18:46:06,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:06,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-09 18:46:06,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-07-09 18:46:06,608 INFO L87 Difference]: Start difference. First operand 3678 states and 12396 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:08,103 INFO L93 Difference]: Finished difference Result 6245 states and 21321 transitions. [2021-07-09 18:46:08,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-09 18:46:08,104 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:08,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:08,119 INFO L225 Difference]: With dead ends: 6245 [2021-07-09 18:46:08,119 INFO L226 Difference]: Without dead ends: 6169 [2021-07-09 18:46:08,120 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 785.0ms TimeCoverageRelationStatistics Valid=243, Invalid=2307, Unknown=0, NotChecked=0, Total=2550 [2021-07-09 18:46:08,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6169 states. [2021-07-09 18:46:08,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6169 to 3686. [2021-07-09 18:46:08,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 3685 states have (on average 3.368249660786974) internal successors, (12412), 3685 states have internal predecessors, (12412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:08,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 12412 transitions. [2021-07-09 18:46:08,198 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 12412 transitions. Word has length 39 [2021-07-09 18:46:08,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:08,198 INFO L482 AbstractCegarLoop]: Abstraction has 3686 states and 12412 transitions. [2021-07-09 18:46:08,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:08,198 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 12412 transitions. [2021-07-09 18:46:08,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:08,204 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:08,204 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:08,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-07-09 18:46:08,204 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:08,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:08,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1488950898, now seen corresponding path program 21 times [2021-07-09 18:46:08,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:08,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110839112] [2021-07-09 18:46:08,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:08,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:08,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:08,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110839112] [2021-07-09 18:46:08,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110839112] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:08,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:08,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:08,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662795891] [2021-07-09 18:46:08,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:08,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:08,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:08,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:08,377 INFO L87 Difference]: Start difference. First operand 3686 states and 12412 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:09,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:09,971 INFO L93 Difference]: Finished difference Result 6227 states and 21267 transitions. [2021-07-09 18:46:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 18:46:09,971 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:09,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:09,986 INFO L225 Difference]: With dead ends: 6227 [2021-07-09 18:46:09,986 INFO L226 Difference]: Without dead ends: 6149 [2021-07-09 18:46:09,987 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 825.8ms TimeCoverageRelationStatistics Valid=259, Invalid=2603, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:46:10,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6149 states. [2021-07-09 18:46:10,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6149 to 3666. [2021-07-09 18:46:10,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3665 states have (on average 3.3735334242837656) internal successors, (12364), 3665 states have internal predecessors, (12364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:10,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 12364 transitions. [2021-07-09 18:46:10,070 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 12364 transitions. Word has length 39 [2021-07-09 18:46:10,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:10,070 INFO L482 AbstractCegarLoop]: Abstraction has 3666 states and 12364 transitions. [2021-07-09 18:46:10,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:10,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 12364 transitions. [2021-07-09 18:46:10,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:10,076 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:10,077 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:10,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-07-09 18:46:10,077 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:10,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:10,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1527620848, now seen corresponding path program 22 times [2021-07-09 18:46:10,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:10,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637907848] [2021-07-09 18:46:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:10,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:10,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637907848] [2021-07-09 18:46:10,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637907848] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:10,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:10,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:10,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477249927] [2021-07-09 18:46:10,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:10,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:10,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:10,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:10,250 INFO L87 Difference]: Start difference. First operand 3666 states and 12364 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:12,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:12,521 INFO L93 Difference]: Finished difference Result 6811 states and 23006 transitions. [2021-07-09 18:46:12,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-09 18:46:12,521 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:12,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:12,536 INFO L225 Difference]: With dead ends: 6811 [2021-07-09 18:46:12,536 INFO L226 Difference]: Without dead ends: 6744 [2021-07-09 18:46:12,537 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 1135.5ms TimeCoverageRelationStatistics Valid=354, Invalid=3806, Unknown=0, NotChecked=0, Total=4160 [2021-07-09 18:46:12,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6744 states. [2021-07-09 18:46:12,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6744 to 3744. [2021-07-09 18:46:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3743 states have (on average 3.3745658562650283) internal successors, (12631), 3743 states have internal predecessors, (12631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 12631 transitions. [2021-07-09 18:46:12,617 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 12631 transitions. Word has length 39 [2021-07-09 18:46:12,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:12,617 INFO L482 AbstractCegarLoop]: Abstraction has 3744 states and 12631 transitions. [2021-07-09 18:46:12,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:12,617 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 12631 transitions. [2021-07-09 18:46:12,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:12,622 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:12,622 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:12,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-07-09 18:46:12,623 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:12,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:12,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1324455154, now seen corresponding path program 23 times [2021-07-09 18:46:12,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:12,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413955352] [2021-07-09 18:46:12,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:12,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:12,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413955352] [2021-07-09 18:46:12,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413955352] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:12,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:12,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:12,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358946852] [2021-07-09 18:46:12,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:12,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:12,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:12,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:12,802 INFO L87 Difference]: Start difference. First operand 3744 states and 12631 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:15,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:15,891 INFO L93 Difference]: Finished difference Result 8158 states and 27612 transitions. [2021-07-09 18:46:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-07-09 18:46:15,891 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:15,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:15,909 INFO L225 Difference]: With dead ends: 8158 [2021-07-09 18:46:15,910 INFO L226 Difference]: Without dead ends: 8115 [2021-07-09 18:46:15,910 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2315 ImplicationChecksByTransitivity, 1705.9ms TimeCoverageRelationStatistics Valid=586, Invalid=6724, Unknown=0, NotChecked=0, Total=7310 [2021-07-09 18:46:15,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8115 states. [2021-07-09 18:46:15,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8115 to 3846. [2021-07-09 18:46:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 3845 states have (on average 3.376332899869961) internal successors, (12982), 3845 states have internal predecessors, (12982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:16,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 12982 transitions. [2021-07-09 18:46:16,005 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 12982 transitions. Word has length 39 [2021-07-09 18:46:16,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:16,005 INFO L482 AbstractCegarLoop]: Abstraction has 3846 states and 12982 transitions. [2021-07-09 18:46:16,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:16,005 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 12982 transitions. [2021-07-09 18:46:16,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:16,011 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:16,011 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:16,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-07-09 18:46:16,011 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:16,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:16,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1189913840, now seen corresponding path program 24 times [2021-07-09 18:46:16,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:16,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430090298] [2021-07-09 18:46:16,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:16,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:16,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430090298] [2021-07-09 18:46:16,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430090298] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:16,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:16,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:16,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565604654] [2021-07-09 18:46:16,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:16,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:16,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:16,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:16,205 INFO L87 Difference]: Start difference. First operand 3846 states and 12982 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:19,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:19,363 INFO L93 Difference]: Finished difference Result 8413 states and 28598 transitions. [2021-07-09 18:46:19,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-07-09 18:46:19,363 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:19,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:19,382 INFO L225 Difference]: With dead ends: 8413 [2021-07-09 18:46:19,382 INFO L226 Difference]: Without dead ends: 8349 [2021-07-09 18:46:19,383 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2310 ImplicationChecksByTransitivity, 1754.1ms TimeCoverageRelationStatistics Valid=585, Invalid=6725, Unknown=0, NotChecked=0, Total=7310 [2021-07-09 18:46:19,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8349 states. [2021-07-09 18:46:19,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8349 to 3816. [2021-07-09 18:46:19,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3816 states, 3815 states have (on average 3.381651376146789) internal successors, (12901), 3815 states have internal predecessors, (12901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3816 states to 3816 states and 12901 transitions. [2021-07-09 18:46:19,476 INFO L78 Accepts]: Start accepts. Automaton has 3816 states and 12901 transitions. Word has length 39 [2021-07-09 18:46:19,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:19,476 INFO L482 AbstractCegarLoop]: Abstraction has 3816 states and 12901 transitions. [2021-07-09 18:46:19,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:19,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3816 states and 12901 transitions. [2021-07-09 18:46:19,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:19,482 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:19,482 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:19,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-07-09 18:46:19,482 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:19,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:19,483 INFO L82 PathProgramCache]: Analyzing trace with hash -572931358, now seen corresponding path program 25 times [2021-07-09 18:46:19,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:19,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371810341] [2021-07-09 18:46:19,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:19,665 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:19,665 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371810341] [2021-07-09 18:46:19,665 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371810341] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:19,665 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:19,665 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:19,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925979308] [2021-07-09 18:46:19,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:19,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:19,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:19,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:19,666 INFO L87 Difference]: Start difference. First operand 3816 states and 12901 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:20,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:20,982 INFO L93 Difference]: Finished difference Result 5619 states and 19160 transitions. [2021-07-09 18:46:20,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-09 18:46:20,982 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:20,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:20,994 INFO L225 Difference]: With dead ends: 5619 [2021-07-09 18:46:20,994 INFO L226 Difference]: Without dead ends: 5552 [2021-07-09 18:46:20,995 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 641.3ms TimeCoverageRelationStatistics Valid=205, Invalid=1865, Unknown=0, NotChecked=0, Total=2070 [2021-07-09 18:46:21,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5552 states. [2021-07-09 18:46:21,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5552 to 3844. [2021-07-09 18:46:21,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3843 states have (on average 3.3778298204527712) internal successors, (12981), 3843 states have internal predecessors, (12981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:21,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 12981 transitions. [2021-07-09 18:46:21,073 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 12981 transitions. Word has length 39 [2021-07-09 18:46:21,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:21,073 INFO L482 AbstractCegarLoop]: Abstraction has 3844 states and 12981 transitions. [2021-07-09 18:46:21,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:21,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 12981 transitions. [2021-07-09 18:46:21,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:21,079 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:21,080 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:21,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-07-09 18:46:21,080 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:21,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:21,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1320717184, now seen corresponding path program 26 times [2021-07-09 18:46:21,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:21,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488742213] [2021-07-09 18:46:21,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:21,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:21,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:21,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488742213] [2021-07-09 18:46:21,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488742213] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:21,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:21,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:21,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365157066] [2021-07-09 18:46:21,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:21,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:21,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:21,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:21,247 INFO L87 Difference]: Start difference. First operand 3844 states and 12981 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:22,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:22,602 INFO L93 Difference]: Finished difference Result 5607 states and 19120 transitions. [2021-07-09 18:46:22,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 18:46:22,602 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:22,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:22,615 INFO L225 Difference]: With dead ends: 5607 [2021-07-09 18:46:22,615 INFO L226 Difference]: Without dead ends: 5544 [2021-07-09 18:46:22,615 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 675.1ms TimeCoverageRelationStatistics Valid=219, Invalid=2037, Unknown=0, NotChecked=0, Total=2256 [2021-07-09 18:46:22,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5544 states. [2021-07-09 18:46:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5544 to 3836. [2021-07-09 18:46:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3836 states, 3835 states have (on average 3.3796610169491523) internal successors, (12961), 3835 states have internal predecessors, (12961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3836 states to 3836 states and 12961 transitions. [2021-07-09 18:46:22,691 INFO L78 Accepts]: Start accepts. Automaton has 3836 states and 12961 transitions. Word has length 39 [2021-07-09 18:46:22,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:22,691 INFO L482 AbstractCegarLoop]: Abstraction has 3836 states and 12961 transitions. [2021-07-09 18:46:22,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:22,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3836 states and 12961 transitions. [2021-07-09 18:46:22,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:22,697 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:22,697 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:22,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-07-09 18:46:22,697 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:22,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:22,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1544074800, now seen corresponding path program 27 times [2021-07-09 18:46:22,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:22,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269292887] [2021-07-09 18:46:22,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:22,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:22,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269292887] [2021-07-09 18:46:22,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269292887] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:22,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:22,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:22,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372483203] [2021-07-09 18:46:22,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:22,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:22,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:22,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:22,866 INFO L87 Difference]: Start difference. First operand 3836 states and 12961 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:24,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:24,790 INFO L93 Difference]: Finished difference Result 6152 states and 20955 transitions. [2021-07-09 18:46:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-07-09 18:46:24,791 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:24,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:24,803 INFO L225 Difference]: With dead ends: 6152 [2021-07-09 18:46:24,803 INFO L226 Difference]: Without dead ends: 6109 [2021-07-09 18:46:24,804 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 1129.3ms TimeCoverageRelationStatistics Valid=367, Invalid=3793, Unknown=0, NotChecked=0, Total=4160 [2021-07-09 18:46:24,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6109 states. [2021-07-09 18:46:24,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6109 to 3864. [2021-07-09 18:46:24,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3864 states, 3863 states have (on average 3.3779446026404347) internal successors, (13049), 3863 states have internal predecessors, (13049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:24,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 13049 transitions. [2021-07-09 18:46:24,879 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 13049 transitions. Word has length 39 [2021-07-09 18:46:24,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:24,879 INFO L482 AbstractCegarLoop]: Abstraction has 3864 states and 13049 transitions. [2021-07-09 18:46:24,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:24,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 13049 transitions. [2021-07-09 18:46:24,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:24,885 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:24,885 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:24,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-07-09 18:46:24,885 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:24,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:24,885 INFO L82 PathProgramCache]: Analyzing trace with hash -236523502, now seen corresponding path program 28 times [2021-07-09 18:46:24,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:24,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582416933] [2021-07-09 18:46:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:25,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:25,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:25,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582416933] [2021-07-09 18:46:25,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582416933] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:25,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:25,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:25,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149765603] [2021-07-09 18:46:25,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:25,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:25,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:25,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:25,063 INFO L87 Difference]: Start difference. First operand 3864 states and 13049 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:27,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:27,235 INFO L93 Difference]: Finished difference Result 6998 states and 23846 transitions. [2021-07-09 18:46:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-07-09 18:46:27,236 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:27,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:27,251 INFO L225 Difference]: With dead ends: 6998 [2021-07-09 18:46:27,251 INFO L226 Difference]: Without dead ends: 6946 [2021-07-09 18:46:27,252 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 1236.4ms TimeCoverageRelationStatistics Valid=402, Invalid=4428, Unknown=0, NotChecked=0, Total=4830 [2021-07-09 18:46:27,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2021-07-09 18:46:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 3852. [2021-07-09 18:46:27,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3852 states, 3851 states have (on average 3.379641651519086) internal successors, (13015), 3851 states have internal predecessors, (13015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:27,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 13015 transitions. [2021-07-09 18:46:27,337 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 13015 transitions. Word has length 39 [2021-07-09 18:46:27,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:27,338 INFO L482 AbstractCegarLoop]: Abstraction has 3852 states and 13015 transitions. [2021-07-09 18:46:27,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:27,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 13015 transitions. [2021-07-09 18:46:27,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:27,343 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:27,343 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:27,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-07-09 18:46:27,343 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:27,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:27,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1832408926, now seen corresponding path program 29 times [2021-07-09 18:46:27,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:27,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623234460] [2021-07-09 18:46:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:27,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:27,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623234460] [2021-07-09 18:46:27,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623234460] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:27,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:27,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:27,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302275007] [2021-07-09 18:46:27,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:27,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:27,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:27,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:27,527 INFO L87 Difference]: Start difference. First operand 3852 states and 13015 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:29,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:29,046 INFO L93 Difference]: Finished difference Result 5751 states and 19448 transitions. [2021-07-09 18:46:29,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 18:46:29,047 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:29,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:29,059 INFO L225 Difference]: With dead ends: 5751 [2021-07-09 18:46:29,059 INFO L226 Difference]: Without dead ends: 5696 [2021-07-09 18:46:29,059 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 811.0ms TimeCoverageRelationStatistics Valid=248, Invalid=2302, Unknown=0, NotChecked=0, Total=2550 [2021-07-09 18:46:29,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5696 states. [2021-07-09 18:46:29,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5696 to 3854. [2021-07-09 18:46:29,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3854 states, 3853 states have (on average 3.3786659745652736) internal successors, (13018), 3853 states have internal predecessors, (13018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:29,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 13018 transitions. [2021-07-09 18:46:29,135 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 13018 transitions. Word has length 39 [2021-07-09 18:46:29,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:29,135 INFO L482 AbstractCegarLoop]: Abstraction has 3854 states and 13018 transitions. [2021-07-09 18:46:29,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:29,135 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 13018 transitions. [2021-07-09 18:46:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:29,141 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:29,141 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:29,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-07-09 18:46:29,142 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:29,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:29,142 INFO L82 PathProgramCache]: Analyzing trace with hash -659756704, now seen corresponding path program 30 times [2021-07-09 18:46:29,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:29,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670798625] [2021-07-09 18:46:29,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:29,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:29,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670798625] [2021-07-09 18:46:29,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670798625] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:29,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:29,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:29,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196325671] [2021-07-09 18:46:29,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:29,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:29,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:29,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:29,339 INFO L87 Difference]: Start difference. First operand 3854 states and 13018 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:30,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:30,979 INFO L93 Difference]: Finished difference Result 6544 states and 22225 transitions. [2021-07-09 18:46:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-09 18:46:30,980 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:30,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:30,994 INFO L225 Difference]: With dead ends: 6544 [2021-07-09 18:46:30,995 INFO L226 Difference]: Without dead ends: 6498 [2021-07-09 18:46:30,995 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 866.5ms TimeCoverageRelationStatistics Valid=265, Invalid=2597, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:46:31,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6498 states. [2021-07-09 18:46:31,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6498 to 3858. [2021-07-09 18:46:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3857 states have (on average 3.3772361939331086) internal successors, (13026), 3857 states have internal predecessors, (13026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:31,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 13026 transitions. [2021-07-09 18:46:31,078 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 13026 transitions. Word has length 39 [2021-07-09 18:46:31,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:31,078 INFO L482 AbstractCegarLoop]: Abstraction has 3858 states and 13026 transitions. [2021-07-09 18:46:31,078 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:31,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 13026 transitions. [2021-07-09 18:46:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:31,085 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:31,085 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:31,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-07-09 18:46:31,085 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:31,085 INFO L82 PathProgramCache]: Analyzing trace with hash -907222866, now seen corresponding path program 31 times [2021-07-09 18:46:31,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:31,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936271877] [2021-07-09 18:46:31,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:31,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:31,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936271877] [2021-07-09 18:46:31,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936271877] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:31,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:31,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:31,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680141497] [2021-07-09 18:46:31,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:31,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:31,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:31,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:31,255 INFO L87 Difference]: Start difference. First operand 3858 states and 13026 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:32,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:32,794 INFO L93 Difference]: Finished difference Result 5686 states and 19337 transitions. [2021-07-09 18:46:32,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 18:46:32,794 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:32,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:32,806 INFO L225 Difference]: With dead ends: 5686 [2021-07-09 18:46:32,806 INFO L226 Difference]: Without dead ends: 5637 [2021-07-09 18:46:32,807 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 842.1ms TimeCoverageRelationStatistics Valid=258, Invalid=2394, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 18:46:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5637 states. [2021-07-09 18:46:32,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5637 to 3848. [2021-07-09 18:46:32,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3847 states have (on average 3.3805562776189237) internal successors, (13005), 3847 states have internal predecessors, (13005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 13005 transitions. [2021-07-09 18:46:32,882 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 13005 transitions. Word has length 39 [2021-07-09 18:46:32,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:32,882 INFO L482 AbstractCegarLoop]: Abstraction has 3848 states and 13005 transitions. [2021-07-09 18:46:32,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:32,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 13005 transitions. [2021-07-09 18:46:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:32,888 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:32,888 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:32,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-07-09 18:46:32,888 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:32,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:32,888 INFO L82 PathProgramCache]: Analyzing trace with hash 765825230, now seen corresponding path program 32 times [2021-07-09 18:46:32,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:32,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199325179] [2021-07-09 18:46:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:33,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:33,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199325179] [2021-07-09 18:46:33,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199325179] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:33,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:33,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:33,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835523277] [2021-07-09 18:46:33,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:33,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:33,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:33,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:33,066 INFO L87 Difference]: Start difference. First operand 3848 states and 13005 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:34,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:34,393 INFO L93 Difference]: Finished difference Result 5607 states and 19154 transitions. [2021-07-09 18:46:34,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-09 18:46:34,393 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:34,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:34,406 INFO L225 Difference]: With dead ends: 5607 [2021-07-09 18:46:34,406 INFO L226 Difference]: Without dead ends: 5540 [2021-07-09 18:46:34,406 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 628.2ms TimeCoverageRelationStatistics Valid=179, Invalid=1627, Unknown=0, NotChecked=0, Total=1806 [2021-07-09 18:46:34,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5540 states. [2021-07-09 18:46:34,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5540 to 3888. [2021-07-09 18:46:34,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3888 states, 3887 states have (on average 3.373552868536146) internal successors, (13113), 3887 states have internal predecessors, (13113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:34,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3888 states to 3888 states and 13113 transitions. [2021-07-09 18:46:34,486 INFO L78 Accepts]: Start accepts. Automaton has 3888 states and 13113 transitions. Word has length 39 [2021-07-09 18:46:34,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:34,486 INFO L482 AbstractCegarLoop]: Abstraction has 3888 states and 13113 transitions. [2021-07-09 18:46:34,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:34,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3888 states and 13113 transitions. [2021-07-09 18:46:34,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:34,493 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:34,493 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:34,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-07-09 18:46:34,493 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:34,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:34,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1635493524, now seen corresponding path program 33 times [2021-07-09 18:46:34,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:34,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213563489] [2021-07-09 18:46:34,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:34,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:34,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213563489] [2021-07-09 18:46:34,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213563489] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:34,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:34,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:34,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155323215] [2021-07-09 18:46:34,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:34,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:34,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:34,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:34,662 INFO L87 Difference]: Start difference. First operand 3888 states and 13113 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:35,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:35,968 INFO L93 Difference]: Finished difference Result 5595 states and 19114 transitions. [2021-07-09 18:46:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-09 18:46:35,968 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:35,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:35,981 INFO L225 Difference]: With dead ends: 5595 [2021-07-09 18:46:35,981 INFO L226 Difference]: Without dead ends: 5532 [2021-07-09 18:46:35,981 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 606.7ms TimeCoverageRelationStatistics Valid=187, Invalid=1705, Unknown=0, NotChecked=0, Total=1892 [2021-07-09 18:46:35,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5532 states. [2021-07-09 18:46:36,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5532 to 3880. [2021-07-09 18:46:36,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3880 states, 3879 states have (on average 3.3743232791956688) internal successors, (13089), 3879 states have internal predecessors, (13089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:36,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 13089 transitions. [2021-07-09 18:46:36,062 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 13089 transitions. Word has length 39 [2021-07-09 18:46:36,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:36,062 INFO L482 AbstractCegarLoop]: Abstraction has 3880 states and 13089 transitions. [2021-07-09 18:46:36,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:36,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 13089 transitions. [2021-07-09 18:46:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:36,068 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:36,068 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:36,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-07-09 18:46:36,068 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:36,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:36,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1570860018, now seen corresponding path program 34 times [2021-07-09 18:46:36,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:36,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70139581] [2021-07-09 18:46:36,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:36,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:36,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70139581] [2021-07-09 18:46:36,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70139581] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:36,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:36,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:36,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37552436] [2021-07-09 18:46:36,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:36,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:36,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:36,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:36,242 INFO L87 Difference]: Start difference. First operand 3880 states and 13089 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:37,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:37,543 INFO L93 Difference]: Finished difference Result 5619 states and 19174 transitions. [2021-07-09 18:46:37,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-09 18:46:37,544 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:37,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:37,556 INFO L225 Difference]: With dead ends: 5619 [2021-07-09 18:46:37,556 INFO L226 Difference]: Without dead ends: 5496 [2021-07-09 18:46:37,556 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 611.2ms TimeCoverageRelationStatistics Valid=193, Invalid=1787, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 18:46:37,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5496 states. [2021-07-09 18:46:37,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5496 to 3848. [2021-07-09 18:46:37,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3847 states have (on average 3.376397192617624) internal successors, (12989), 3847 states have internal predecessors, (12989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 12989 transitions. [2021-07-09 18:46:37,636 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 12989 transitions. Word has length 39 [2021-07-09 18:46:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:37,636 INFO L482 AbstractCegarLoop]: Abstraction has 3848 states and 12989 transitions. [2021-07-09 18:46:37,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:37,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 12989 transitions. [2021-07-09 18:46:37,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:37,643 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:37,643 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:37,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-07-09 18:46:37,643 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:37,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:37,643 INFO L82 PathProgramCache]: Analyzing trace with hash -747253810, now seen corresponding path program 35 times [2021-07-09 18:46:37,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:37,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30425033] [2021-07-09 18:46:37,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:37,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:37,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:37,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30425033] [2021-07-09 18:46:37,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30425033] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:37,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:37,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:37,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063639310] [2021-07-09 18:46:37,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:37,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:37,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:37,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:37,811 INFO L87 Difference]: Start difference. First operand 3848 states and 12989 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:39,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:39,764 INFO L93 Difference]: Finished difference Result 6258 states and 21345 transitions. [2021-07-09 18:46:39,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-07-09 18:46:39,764 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:39,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:39,778 INFO L225 Difference]: With dead ends: 6258 [2021-07-09 18:46:39,778 INFO L226 Difference]: Without dead ends: 6215 [2021-07-09 18:46:39,779 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 1114.1ms TimeCoverageRelationStatistics Valid=354, Invalid=3552, Unknown=0, NotChecked=0, Total=3906 [2021-07-09 18:46:39,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6215 states. [2021-07-09 18:46:39,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6215 to 3862. [2021-07-09 18:46:39,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 3.374773374773375) internal successors, (13030), 3861 states have internal predecessors, (13030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:39,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 13030 transitions. [2021-07-09 18:46:39,857 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 13030 transitions. Word has length 39 [2021-07-09 18:46:39,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:39,857 INFO L482 AbstractCegarLoop]: Abstraction has 3862 states and 13030 transitions. [2021-07-09 18:46:39,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:39,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 13030 transitions. [2021-07-09 18:46:39,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:39,863 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:39,863 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:39,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-07-09 18:46:39,863 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:39,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:39,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1767115184, now seen corresponding path program 36 times [2021-07-09 18:46:39,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:39,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105848387] [2021-07-09 18:46:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:40,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:40,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105848387] [2021-07-09 18:46:40,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105848387] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:40,051 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:40,051 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:40,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785328545] [2021-07-09 18:46:40,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:40,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:40,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:40,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:40,052 INFO L87 Difference]: Start difference. First operand 3862 states and 13030 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:42,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:42,245 INFO L93 Difference]: Finished difference Result 7119 states and 24275 transitions. [2021-07-09 18:46:42,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-07-09 18:46:42,245 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:42,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:42,261 INFO L225 Difference]: With dead ends: 7119 [2021-07-09 18:46:42,261 INFO L226 Difference]: Without dead ends: 7067 [2021-07-09 18:46:42,262 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 1247.9ms TimeCoverageRelationStatistics Valid=396, Invalid=4296, Unknown=0, NotChecked=0, Total=4692 [2021-07-09 18:46:42,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7067 states. [2021-07-09 18:46:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7067 to 3854. [2021-07-09 18:46:42,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3854 states, 3853 states have (on average 3.3765896703867115) internal successors, (13010), 3853 states have internal predecessors, (13010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:42,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 13010 transitions. [2021-07-09 18:46:42,344 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 13010 transitions. Word has length 39 [2021-07-09 18:46:42,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:42,344 INFO L482 AbstractCegarLoop]: Abstraction has 3854 states and 13010 transitions. [2021-07-09 18:46:42,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:42,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 13010 transitions. [2021-07-09 18:46:42,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:42,350 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:42,350 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:42,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-07-09 18:46:42,350 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:42,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:42,351 INFO L82 PathProgramCache]: Analyzing trace with hash 171229760, now seen corresponding path program 37 times [2021-07-09 18:46:42,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:42,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690386545] [2021-07-09 18:46:42,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:42,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:42,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:42,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690386545] [2021-07-09 18:46:42,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690386545] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:42,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:42,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:42,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474832366] [2021-07-09 18:46:42,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:42,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:42,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:42,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:42,520 INFO L87 Difference]: Start difference. First operand 3854 states and 13010 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:43,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:43,909 INFO L93 Difference]: Finished difference Result 5789 states and 19585 transitions. [2021-07-09 18:46:43,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-09 18:46:43,909 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:43,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:43,922 INFO L225 Difference]: With dead ends: 5789 [2021-07-09 18:46:43,922 INFO L226 Difference]: Without dead ends: 5734 [2021-07-09 18:46:43,922 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 705.8ms TimeCoverageRelationStatistics Valid=235, Invalid=2117, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 18:46:43,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5734 states. [2021-07-09 18:46:43,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5734 to 3862. [2021-07-09 18:46:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 3.375809375809376) internal successors, (13034), 3861 states have internal predecessors, (13034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:43,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 13034 transitions. [2021-07-09 18:46:43,996 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 13034 transitions. Word has length 39 [2021-07-09 18:46:43,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:43,997 INFO L482 AbstractCegarLoop]: Abstraction has 3862 states and 13034 transitions. [2021-07-09 18:46:43,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 13034 transitions. [2021-07-09 18:46:44,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:44,003 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:44,003 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:44,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-07-09 18:46:44,003 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:44,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:44,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1343881982, now seen corresponding path program 38 times [2021-07-09 18:46:44,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:44,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318271295] [2021-07-09 18:46:44,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:44,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:44,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:44,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318271295] [2021-07-09 18:46:44,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318271295] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:44,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:44,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:44,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129654377] [2021-07-09 18:46:44,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:44,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:44,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:44,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:44,179 INFO L87 Difference]: Start difference. First operand 3862 states and 13034 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:45,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:45,809 INFO L93 Difference]: Finished difference Result 6650 states and 22519 transitions. [2021-07-09 18:46:45,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 18:46:45,810 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:45,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:45,825 INFO L225 Difference]: With dead ends: 6650 [2021-07-09 18:46:45,825 INFO L226 Difference]: Without dead ends: 6590 [2021-07-09 18:46:45,825 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 829.7ms TimeCoverageRelationStatistics Valid=266, Invalid=2596, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:46:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2021-07-09 18:46:45,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 3860. [2021-07-09 18:46:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3860 states, 3859 states have (on average 3.3762632806426534) internal successors, (13029), 3859 states have internal predecessors, (13029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3860 states to 3860 states and 13029 transitions. [2021-07-09 18:46:45,907 INFO L78 Accepts]: Start accepts. Automaton has 3860 states and 13029 transitions. Word has length 39 [2021-07-09 18:46:45,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:45,907 INFO L482 AbstractCegarLoop]: Abstraction has 3860 states and 13029 transitions. [2021-07-09 18:46:45,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:45,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3860 states and 13029 transitions. [2021-07-09 18:46:45,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:45,913 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:45,913 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:45,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-07-09 18:46:45,913 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:45,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:45,914 INFO L82 PathProgramCache]: Analyzing trace with hash -533521620, now seen corresponding path program 39 times [2021-07-09 18:46:45,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:45,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489785124] [2021-07-09 18:46:45,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:46,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:46,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489785124] [2021-07-09 18:46:46,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489785124] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:46,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:46,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:46,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833091567] [2021-07-09 18:46:46,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:46,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:46,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:46,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:46,111 INFO L87 Difference]: Start difference. First operand 3860 states and 13029 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:47,460 INFO L93 Difference]: Finished difference Result 5722 states and 19443 transitions. [2021-07-09 18:46:47,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 18:46:47,460 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:47,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:47,472 INFO L225 Difference]: With dead ends: 5722 [2021-07-09 18:46:47,472 INFO L226 Difference]: Without dead ends: 5631 [2021-07-09 18:46:47,473 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 707.0ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-07-09 18:46:47,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2021-07-09 18:46:47,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 3860. [2021-07-09 18:46:47,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3860 states, 3859 states have (on average 3.374708473697849) internal successors, (13023), 3859 states have internal predecessors, (13023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:47,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3860 states to 3860 states and 13023 transitions. [2021-07-09 18:46:47,571 INFO L78 Accepts]: Start accepts. Automaton has 3860 states and 13023 transitions. Word has length 39 [2021-07-09 18:46:47,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:47,572 INFO L482 AbstractCegarLoop]: Abstraction has 3860 states and 13023 transitions. [2021-07-09 18:46:47,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:47,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3860 states and 13023 transitions. [2021-07-09 18:46:47,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:47,577 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:47,577 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:47,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-07-09 18:46:47,577 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:47,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:47,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2036003826, now seen corresponding path program 40 times [2021-07-09 18:46:47,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:47,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281572396] [2021-07-09 18:46:47,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:47,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:47,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281572396] [2021-07-09 18:46:47,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281572396] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:47,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:47,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:47,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386285456] [2021-07-09 18:46:47,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:47,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:47,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:47,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:47,780 INFO L87 Difference]: Start difference. First operand 3860 states and 13023 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:49,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:49,412 INFO L93 Difference]: Finished difference Result 6494 states and 22159 transitions. [2021-07-09 18:46:49,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 18:46:49,412 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:49,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:49,427 INFO L225 Difference]: With dead ends: 6494 [2021-07-09 18:46:49,427 INFO L226 Difference]: Without dead ends: 6378 [2021-07-09 18:46:49,427 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 824.0ms TimeCoverageRelationStatistics Valid=245, Invalid=2407, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 18:46:49,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6378 states. [2021-07-09 18:46:49,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6378 to 3838. [2021-07-09 18:46:49,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3838 states, 3837 states have (on average 3.377638780297107) internal successors, (12960), 3837 states have internal predecessors, (12960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:49,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3838 states to 3838 states and 12960 transitions. [2021-07-09 18:46:49,508 INFO L78 Accepts]: Start accepts. Automaton has 3838 states and 12960 transitions. Word has length 39 [2021-07-09 18:46:49,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:49,509 INFO L482 AbstractCegarLoop]: Abstraction has 3838 states and 12960 transitions. [2021-07-09 18:46:49,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:49,509 INFO L276 IsEmpty]: Start isEmpty. Operand 3838 states and 12960 transitions. [2021-07-09 18:46:49,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:49,515 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:49,515 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:49,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-07-09 18:46:49,515 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:49,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:49,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1299285810, now seen corresponding path program 41 times [2021-07-09 18:46:49,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:49,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036088812] [2021-07-09 18:46:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:49,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:49,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036088812] [2021-07-09 18:46:49,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036088812] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:49,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:49,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:49,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070285105] [2021-07-09 18:46:49,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:49,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:49,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:49,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:49,695 INFO L87 Difference]: Start difference. First operand 3838 states and 12960 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:53,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:53,239 INFO L93 Difference]: Finished difference Result 8378 states and 28437 transitions. [2021-07-09 18:46:53,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-07-09 18:46:53,239 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:53,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:53,258 INFO L225 Difference]: With dead ends: 8378 [2021-07-09 18:46:53,258 INFO L226 Difference]: Without dead ends: 8272 [2021-07-09 18:46:53,259 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2726 ImplicationChecksByTransitivity, 1938.3ms TimeCoverageRelationStatistics Valid=650, Invalid=7722, Unknown=0, NotChecked=0, Total=8372 [2021-07-09 18:46:53,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8272 states. [2021-07-09 18:46:53,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8272 to 3854. [2021-07-09 18:46:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3854 states, 3853 states have (on average 3.377108746431352) internal successors, (13012), 3853 states have internal predecessors, (13012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:53,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 13012 transitions. [2021-07-09 18:46:53,354 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 13012 transitions. Word has length 39 [2021-07-09 18:46:53,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:53,354 INFO L482 AbstractCegarLoop]: Abstraction has 3854 states and 13012 transitions. [2021-07-09 18:46:53,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:53,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 13012 transitions. [2021-07-09 18:46:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:53,360 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:53,360 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:53,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-07-09 18:46:53,360 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:53,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:53,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1500790586, now seen corresponding path program 42 times [2021-07-09 18:46:53,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:53,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694807121] [2021-07-09 18:46:53,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:53,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:53,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:53,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694807121] [2021-07-09 18:46:53,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694807121] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:53,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:53,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:53,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606274379] [2021-07-09 18:46:53,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:53,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:53,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:53,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:53,532 INFO L87 Difference]: Start difference. First operand 3854 states and 13012 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:55,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:55,297 INFO L93 Difference]: Finished difference Result 6055 states and 20602 transitions. [2021-07-09 18:46:55,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-07-09 18:46:55,297 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:55,311 INFO L225 Difference]: With dead ends: 6055 [2021-07-09 18:46:55,311 INFO L226 Difference]: Without dead ends: 5991 [2021-07-09 18:46:55,312 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 1039.5ms TimeCoverageRelationStatistics Valid=334, Invalid=3448, Unknown=0, NotChecked=0, Total=3782 [2021-07-09 18:46:55,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5991 states. [2021-07-09 18:46:55,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5991 to 3850. [2021-07-09 18:46:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 3849 states have (on average 3.3780202650038973) internal successors, (13002), 3849 states have internal predecessors, (13002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 13002 transitions. [2021-07-09 18:46:55,394 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 13002 transitions. Word has length 39 [2021-07-09 18:46:55,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:55,394 INFO L482 AbstractCegarLoop]: Abstraction has 3850 states and 13002 transitions. [2021-07-09 18:46:55,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:55,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 13002 transitions. [2021-07-09 18:46:55,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:55,400 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:55,400 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:55,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-07-09 18:46:55,400 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:55,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:55,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1875693140, now seen corresponding path program 43 times [2021-07-09 18:46:55,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:55,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129572620] [2021-07-09 18:46:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:55,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:55,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129572620] [2021-07-09 18:46:55,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129572620] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:55,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:55,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:55,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934416263] [2021-07-09 18:46:55,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:55,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:55,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:55,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:55,596 INFO L87 Difference]: Start difference. First operand 3850 states and 13002 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:56,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:56,841 INFO L93 Difference]: Finished difference Result 5612 states and 19021 transitions. [2021-07-09 18:46:56,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-09 18:46:56,841 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:56,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:56,854 INFO L225 Difference]: With dead ends: 5612 [2021-07-09 18:46:56,854 INFO L226 Difference]: Without dead ends: 5569 [2021-07-09 18:46:56,854 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 660.0ms TimeCoverageRelationStatistics Valid=204, Invalid=1958, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 18:46:56,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2021-07-09 18:46:56,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 3872. [2021-07-09 18:46:56,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3872 states, 3871 states have (on average 3.375613536553862) internal successors, (13067), 3871 states have internal predecessors, (13067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3872 states to 3872 states and 13067 transitions. [2021-07-09 18:46:56,932 INFO L78 Accepts]: Start accepts. Automaton has 3872 states and 13067 transitions. Word has length 39 [2021-07-09 18:46:56,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:56,932 INFO L482 AbstractCegarLoop]: Abstraction has 3872 states and 13067 transitions. [2021-07-09 18:46:56,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:56,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3872 states and 13067 transitions. [2021-07-09 18:46:56,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:56,938 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:56,938 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:56,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-07-09 18:46:56,938 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:56,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:56,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1855544406, now seen corresponding path program 44 times [2021-07-09 18:46:56,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:56,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618431662] [2021-07-09 18:46:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:57,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:57,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:57,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618431662] [2021-07-09 18:46:57,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618431662] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:57,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:57,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:57,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537341454] [2021-07-09 18:46:57,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:57,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:57,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:57,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:57,147 INFO L87 Difference]: Start difference. First operand 3872 states and 13067 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:58,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:46:58,494 INFO L93 Difference]: Finished difference Result 5591 states and 18991 transitions. [2021-07-09 18:46:58,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-09 18:46:58,494 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:46:58,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:46:58,506 INFO L225 Difference]: With dead ends: 5591 [2021-07-09 18:46:58,507 INFO L226 Difference]: Without dead ends: 5548 [2021-07-09 18:46:58,507 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 743.5ms TimeCoverageRelationStatistics Valid=222, Invalid=2130, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 18:46:58,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2021-07-09 18:46:58,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 3868. [2021-07-09 18:46:58,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 3867 states have (on average 3.3765192655805536) internal successors, (13057), 3867 states have internal predecessors, (13057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 13057 transitions. [2021-07-09 18:46:58,594 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 13057 transitions. Word has length 39 [2021-07-09 18:46:58,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:46:58,594 INFO L482 AbstractCegarLoop]: Abstraction has 3868 states and 13057 transitions. [2021-07-09 18:46:58,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:46:58,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 13057 transitions. [2021-07-09 18:46:58,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:46:58,600 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:46:58,600 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:46:58,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-07-09 18:46:58,600 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:46:58,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:46:58,601 INFO L82 PathProgramCache]: Analyzing trace with hash -703040918, now seen corresponding path program 45 times [2021-07-09 18:46:58,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:46:58,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532181333] [2021-07-09 18:46:58,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:46:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:46:58,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:46:58,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:46:58,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532181333] [2021-07-09 18:46:58,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532181333] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:46:58,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:46:58,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:46:58,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290367424] [2021-07-09 18:46:58,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:46:58,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:46:58,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:46:58,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:46:58,789 INFO L87 Difference]: Start difference. First operand 3868 states and 13057 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:00,363 INFO L93 Difference]: Finished difference Result 6448 states and 21909 transitions. [2021-07-09 18:47:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 18:47:00,363 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:00,378 INFO L225 Difference]: With dead ends: 6448 [2021-07-09 18:47:00,378 INFO L226 Difference]: Without dead ends: 6388 [2021-07-09 18:47:00,378 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 853.0ms TimeCoverageRelationStatistics Valid=258, Invalid=2604, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:47:00,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6388 states. [2021-07-09 18:47:00,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6388 to 3866. [2021-07-09 18:47:00,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3866 states, 3865 states have (on average 3.376972833117723) internal successors, (13052), 3865 states have internal predecessors, (13052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 13052 transitions. [2021-07-09 18:47:00,456 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 13052 transitions. Word has length 39 [2021-07-09 18:47:00,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:00,456 INFO L482 AbstractCegarLoop]: Abstraction has 3866 states and 13052 transitions. [2021-07-09 18:47:00,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:00,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 13052 transitions. [2021-07-09 18:47:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:00,462 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:00,462 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:00,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-07-09 18:47:00,462 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:00,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:00,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1512359836, now seen corresponding path program 46 times [2021-07-09 18:47:00,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:00,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839140507] [2021-07-09 18:47:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:00,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:00,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839140507] [2021-07-09 18:47:00,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839140507] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:00,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:00,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-09 18:47:00,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109674767] [2021-07-09 18:47:00,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-09 18:47:00,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:00,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-09 18:47:00,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-07-09 18:47:00,625 INFO L87 Difference]: Start difference. First operand 3866 states and 13052 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:01,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:01,996 INFO L93 Difference]: Finished difference Result 6416 states and 21849 transitions. [2021-07-09 18:47:01,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-09 18:47:01,996 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:01,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:02,010 INFO L225 Difference]: With dead ends: 6416 [2021-07-09 18:47:02,010 INFO L226 Difference]: Without dead ends: 6340 [2021-07-09 18:47:02,010 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 694.3ms TimeCoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2021-07-09 18:47:02,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states. [2021-07-09 18:47:02,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6340 to 3874. [2021-07-09 18:47:02,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 3873 states have (on average 3.3741285824941905) internal successors, (13068), 3873 states have internal predecessors, (13068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:02,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 13068 transitions. [2021-07-09 18:47:02,087 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 13068 transitions. Word has length 39 [2021-07-09 18:47:02,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:02,087 INFO L482 AbstractCegarLoop]: Abstraction has 3874 states and 13068 transitions. [2021-07-09 18:47:02,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:02,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 13068 transitions. [2021-07-09 18:47:02,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:02,093 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:02,093 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:02,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-07-09 18:47:02,093 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:02,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:02,093 INFO L82 PathProgramCache]: Analyzing trace with hash 494306224, now seen corresponding path program 47 times [2021-07-09 18:47:02,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:02,093 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200027225] [2021-07-09 18:47:02,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:02,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:02,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200027225] [2021-07-09 18:47:02,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200027225] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:02,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:02,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:47:02,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431209358] [2021-07-09 18:47:02,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:47:02,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:02,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:47:02,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:47:02,267 INFO L87 Difference]: Start difference. First operand 3874 states and 13068 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:03,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:03,764 INFO L93 Difference]: Finished difference Result 6398 states and 21795 transitions. [2021-07-09 18:47:03,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 18:47:03,764 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:03,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:03,778 INFO L225 Difference]: With dead ends: 6398 [2021-07-09 18:47:03,778 INFO L226 Difference]: Without dead ends: 6328 [2021-07-09 18:47:03,779 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 770.7ms TimeCoverageRelationStatistics Valid=239, Invalid=2413, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 18:47:03,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6328 states. [2021-07-09 18:47:03,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6328 to 3862. [2021-07-09 18:47:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 3.3773633773633773) internal successors, (13040), 3861 states have internal predecessors, (13040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:03,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 13040 transitions. [2021-07-09 18:47:03,856 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 13040 transitions. Word has length 39 [2021-07-09 18:47:03,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:03,856 INFO L482 AbstractCegarLoop]: Abstraction has 3862 states and 13040 transitions. [2021-07-09 18:47:03,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:03,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 13040 transitions. [2021-07-09 18:47:03,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:03,862 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:03,862 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:03,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-07-09 18:47:03,862 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:03,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:03,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1340489904, now seen corresponding path program 48 times [2021-07-09 18:47:03,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:03,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372574383] [2021-07-09 18:47:03,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:04,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:04,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:04,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372574383] [2021-07-09 18:47:04,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372574383] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:04,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:04,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:47:04,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536080369] [2021-07-09 18:47:04,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:47:04,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:04,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:47:04,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:47:04,038 INFO L87 Difference]: Start difference. First operand 3862 states and 13040 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:05,869 INFO L93 Difference]: Finished difference Result 6160 states and 21004 transitions. [2021-07-09 18:47:05,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-07-09 18:47:05,870 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:05,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:05,883 INFO L225 Difference]: With dead ends: 6160 [2021-07-09 18:47:05,883 INFO L226 Difference]: Without dead ends: 6117 [2021-07-09 18:47:05,884 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1071.5ms TimeCoverageRelationStatistics Valid=344, Invalid=3438, Unknown=0, NotChecked=0, Total=3782 [2021-07-09 18:47:05,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6117 states. [2021-07-09 18:47:05,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6117 to 3876. [2021-07-09 18:47:05,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3876 states, 3875 states have (on average 3.375741935483871) internal successors, (13081), 3875 states have internal predecessors, (13081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 13081 transitions. [2021-07-09 18:47:05,962 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 13081 transitions. Word has length 39 [2021-07-09 18:47:05,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:05,962 INFO L482 AbstractCegarLoop]: Abstraction has 3876 states and 13081 transitions. [2021-07-09 18:47:05,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:05,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 13081 transitions. [2021-07-09 18:47:05,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:05,968 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:05,968 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:05,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-07-09 18:47:05,968 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:05,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:05,968 INFO L82 PathProgramCache]: Analyzing trace with hash -440108398, now seen corresponding path program 49 times [2021-07-09 18:47:05,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:05,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430160218] [2021-07-09 18:47:05,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:06,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:06,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430160218] [2021-07-09 18:47:06,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430160218] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:06,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:06,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:47:06,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788612599] [2021-07-09 18:47:06,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:47:06,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:06,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:47:06,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:47:06,171 INFO L87 Difference]: Start difference. First operand 3876 states and 13081 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:08,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:08,249 INFO L93 Difference]: Finished difference Result 7021 states and 23934 transitions. [2021-07-09 18:47:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-09 18:47:08,249 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:08,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:08,265 INFO L225 Difference]: With dead ends: 7021 [2021-07-09 18:47:08,265 INFO L226 Difference]: Without dead ends: 6969 [2021-07-09 18:47:08,266 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 1233.6ms TimeCoverageRelationStatistics Valid=386, Invalid=4170, Unknown=0, NotChecked=0, Total=4556 [2021-07-09 18:47:08,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6969 states. [2021-07-09 18:47:08,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6969 to 3862. [2021-07-09 18:47:08,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 3.3773633773633773) internal successors, (13040), 3861 states have internal predecessors, (13040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:08,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 13040 transitions. [2021-07-09 18:47:08,349 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 13040 transitions. Word has length 39 [2021-07-09 18:47:08,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:08,349 INFO L482 AbstractCegarLoop]: Abstraction has 3862 states and 13040 transitions. [2021-07-09 18:47:08,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:08,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 13040 transitions. [2021-07-09 18:47:08,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:08,354 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:08,355 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:08,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-07-09 18:47:08,355 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:08,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:08,355 INFO L82 PathProgramCache]: Analyzing trace with hash -2035993822, now seen corresponding path program 50 times [2021-07-09 18:47:08,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:08,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063806544] [2021-07-09 18:47:08,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:08,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:08,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063806544] [2021-07-09 18:47:08,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063806544] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:08,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:08,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:47:08,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95814779] [2021-07-09 18:47:08,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:47:08,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:08,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:47:08,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:47:08,538 INFO L87 Difference]: Start difference. First operand 3862 states and 13040 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:09,836 INFO L93 Difference]: Finished difference Result 5717 states and 19331 transitions. [2021-07-09 18:47:09,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 18:47:09,836 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:09,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:09,848 INFO L225 Difference]: With dead ends: 5717 [2021-07-09 18:47:09,848 INFO L226 Difference]: Without dead ends: 5662 [2021-07-09 18:47:09,849 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 689.0ms TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 18:47:09,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5662 states. [2021-07-09 18:47:09,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5662 to 3870. [2021-07-09 18:47:09,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 3869 states have (on average 3.3765830964073404) internal successors, (13064), 3869 states have internal predecessors, (13064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:09,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 13064 transitions. [2021-07-09 18:47:09,923 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 13064 transitions. Word has length 39 [2021-07-09 18:47:09,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:09,924 INFO L482 AbstractCegarLoop]: Abstraction has 3870 states and 13064 transitions. [2021-07-09 18:47:09,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:09,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 13064 transitions. [2021-07-09 18:47:09,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:09,929 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:09,929 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:09,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-07-09 18:47:09,930 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:09,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:09,930 INFO L82 PathProgramCache]: Analyzing trace with hash -863341600, now seen corresponding path program 51 times [2021-07-09 18:47:09,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:09,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354197794] [2021-07-09 18:47:09,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:10,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:10,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:10,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354197794] [2021-07-09 18:47:10,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354197794] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:10,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:10,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:47:10,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187476118] [2021-07-09 18:47:10,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:47:10,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:10,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:47:10,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:47:10,168 INFO L87 Difference]: Start difference. First operand 3870 states and 13064 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:11,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:11,757 INFO L93 Difference]: Finished difference Result 6578 states and 22265 transitions. [2021-07-09 18:47:11,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-09 18:47:11,757 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:11,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:11,771 INFO L225 Difference]: With dead ends: 6578 [2021-07-09 18:47:11,772 INFO L226 Difference]: Without dead ends: 6518 [2021-07-09 18:47:11,772 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 925.1ms TimeCoverageRelationStatistics Valid=276, Invalid=2694, Unknown=0, NotChecked=0, Total=2970 [2021-07-09 18:47:11,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6518 states. [2021-07-09 18:47:11,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6518 to 3868. [2021-07-09 18:47:11,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 3867 states have (on average 3.3770364623739333) internal successors, (13059), 3867 states have internal predecessors, (13059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 13059 transitions. [2021-07-09 18:47:11,853 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 13059 transitions. Word has length 39 [2021-07-09 18:47:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:11,853 INFO L482 AbstractCegarLoop]: Abstraction has 3868 states and 13059 transitions. [2021-07-09 18:47:11,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:11,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 13059 transitions. [2021-07-09 18:47:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:11,859 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:11,859 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:11,859 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-07-09 18:47:11,859 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:11,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:11,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1554222094, now seen corresponding path program 52 times [2021-07-09 18:47:11,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:11,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932523951] [2021-07-09 18:47:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:12,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:12,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932523951] [2021-07-09 18:47:12,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932523951] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:12,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:12,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:47:12,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425711186] [2021-07-09 18:47:12,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:47:12,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:12,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:47:12,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:47:12,051 INFO L87 Difference]: Start difference. First operand 3868 states and 13059 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:13,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:13,286 INFO L93 Difference]: Finished difference Result 5638 states and 19157 transitions. [2021-07-09 18:47:13,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-09 18:47:13,286 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:13,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:13,299 INFO L225 Difference]: With dead ends: 5638 [2021-07-09 18:47:13,299 INFO L226 Difference]: Without dead ends: 5547 [2021-07-09 18:47:13,300 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 648.2ms TimeCoverageRelationStatistics Valid=193, Invalid=1787, Unknown=0, NotChecked=0, Total=1980 [2021-07-09 18:47:13,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2021-07-09 18:47:13,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 3868. [2021-07-09 18:47:13,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 3867 states have (on average 3.3754848719937938) internal successors, (13053), 3867 states have internal predecessors, (13053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:13,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 13053 transitions. [2021-07-09 18:47:13,383 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 13053 transitions. Word has length 39 [2021-07-09 18:47:13,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:13,383 INFO L482 AbstractCegarLoop]: Abstraction has 3868 states and 13053 transitions. [2021-07-09 18:47:13,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 13053 transitions. [2021-07-09 18:47:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:13,390 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:13,390 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:13,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-07-09 18:47:13,391 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:13,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:13,391 INFO L82 PathProgramCache]: Analyzing trace with hash 51739888, now seen corresponding path program 53 times [2021-07-09 18:47:13,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:13,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840646979] [2021-07-09 18:47:13,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:13,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:13,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840646979] [2021-07-09 18:47:13,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840646979] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:13,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:13,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:47:13,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386253514] [2021-07-09 18:47:13,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:47:13,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:13,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:47:13,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:47:13,569 INFO L87 Difference]: Start difference. First operand 3868 states and 13053 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:15,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:15,078 INFO L93 Difference]: Finished difference Result 6470 states and 22033 transitions. [2021-07-09 18:47:15,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 18:47:15,078 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:15,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:15,091 INFO L225 Difference]: With dead ends: 6470 [2021-07-09 18:47:15,091 INFO L226 Difference]: Without dead ends: 6370 [2021-07-09 18:47:15,092 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 805.5ms TimeCoverageRelationStatistics Valid=245, Invalid=2407, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 18:47:15,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6370 states. [2021-07-09 18:47:15,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6370 to 3862. [2021-07-09 18:47:15,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 3.375809375809376) internal successors, (13034), 3861 states have internal predecessors, (13034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 13034 transitions. [2021-07-09 18:47:15,163 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 13034 transitions. Word has length 39 [2021-07-09 18:47:15,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:15,163 INFO L482 AbstractCegarLoop]: Abstraction has 3862 states and 13034 transitions. [2021-07-09 18:47:15,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:15,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 13034 transitions. [2021-07-09 18:47:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:15,168 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:15,168 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:15,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-07-09 18:47:15,169 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:15,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:15,169 INFO L82 PathProgramCache]: Analyzing trace with hash -184885108, now seen corresponding path program 54 times [2021-07-09 18:47:15,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:15,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809813066] [2021-07-09 18:47:15,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:15,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:15,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:15,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809813066] [2021-07-09 18:47:15,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809813066] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:15,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:15,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-07-09 18:47:15,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149803118] [2021-07-09 18:47:15,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-09 18:47:15,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:15,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-09 18:47:15,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-07-09 18:47:15,366 INFO L87 Difference]: Start difference. First operand 3862 states and 13034 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:16,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:16,645 INFO L93 Difference]: Finished difference Result 6347 states and 21652 transitions. [2021-07-09 18:47:16,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-09 18:47:16,645 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:16,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:16,659 INFO L225 Difference]: With dead ends: 6347 [2021-07-09 18:47:16,659 INFO L226 Difference]: Without dead ends: 6271 [2021-07-09 18:47:16,660 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 673.1ms TimeCoverageRelationStatistics Valid=205, Invalid=1865, Unknown=0, NotChecked=0, Total=2070 [2021-07-09 18:47:16,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6271 states. [2021-07-09 18:47:16,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6271 to 3894. [2021-07-09 18:47:16,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3894 states, 3893 states have (on average 3.37066529668636) internal successors, (13122), 3893 states have internal predecessors, (13122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:16,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 13122 transitions. [2021-07-09 18:47:16,757 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 13122 transitions. Word has length 39 [2021-07-09 18:47:16,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:16,757 INFO L482 AbstractCegarLoop]: Abstraction has 3894 states and 13122 transitions. [2021-07-09 18:47:16,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:16,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 13122 transitions. [2021-07-09 18:47:16,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:16,763 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:16,763 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:16,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-07-09 18:47:16,763 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:16,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:16,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1202938720, now seen corresponding path program 55 times [2021-07-09 18:47:16,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:16,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654406729] [2021-07-09 18:47:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:16,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:16,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:16,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654406729] [2021-07-09 18:47:16,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654406729] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:16,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:16,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:47:16,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671417333] [2021-07-09 18:47:16,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:47:16,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:16,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:47:16,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:47:16,954 INFO L87 Difference]: Start difference. First operand 3894 states and 13122 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:18,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:18,411 INFO L93 Difference]: Finished difference Result 6329 states and 21598 transitions. [2021-07-09 18:47:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-09 18:47:18,411 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:18,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:18,425 INFO L225 Difference]: With dead ends: 6329 [2021-07-09 18:47:18,425 INFO L226 Difference]: Without dead ends: 6263 [2021-07-09 18:47:18,426 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 776.1ms TimeCoverageRelationStatistics Valid=226, Invalid=2224, Unknown=0, NotChecked=0, Total=2450 [2021-07-09 18:47:18,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6263 states. [2021-07-09 18:47:18,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6263 to 3886. [2021-07-09 18:47:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3886 states, 3885 states have (on average 3.3714285714285714) internal successors, (13098), 3885 states have internal predecessors, (13098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:18,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3886 states to 3886 states and 13098 transitions. [2021-07-09 18:47:18,501 INFO L78 Accepts]: Start accepts. Automaton has 3886 states and 13098 transitions. Word has length 39 [2021-07-09 18:47:18,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:18,501 INFO L482 AbstractCegarLoop]: Abstraction has 3886 states and 13098 transitions. [2021-07-09 18:47:18,501 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:18,501 INFO L276 IsEmpty]: Start isEmpty. Operand 3886 states and 13098 transitions. [2021-07-09 18:47:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:18,507 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:18,507 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:18,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-07-09 18:47:18,507 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:18,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:18,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1485204374, now seen corresponding path program 56 times [2021-07-09 18:47:18,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:18,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538277670] [2021-07-09 18:47:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:18,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:18,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538277670] [2021-07-09 18:47:18,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538277670] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:18,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:18,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:47:18,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665551614] [2021-07-09 18:47:18,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:47:18,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:18,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:47:18,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:47:18,684 INFO L87 Difference]: Start difference. First operand 3886 states and 13098 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:20,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:20,130 INFO L93 Difference]: Finished difference Result 6350 states and 21651 transitions. [2021-07-09 18:47:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-09 18:47:20,131 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:20,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:20,145 INFO L225 Difference]: With dead ends: 6350 [2021-07-09 18:47:20,145 INFO L226 Difference]: Without dead ends: 6188 [2021-07-09 18:47:20,145 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 739.6ms TimeCoverageRelationStatistics Valid=226, Invalid=2224, Unknown=0, NotChecked=0, Total=2450 [2021-07-09 18:47:20,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6188 states. [2021-07-09 18:47:20,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6188 to 3818. [2021-07-09 18:47:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 3817 states have (on average 3.378045585538381) internal successors, (12894), 3817 states have internal predecessors, (12894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:20,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 12894 transitions. [2021-07-09 18:47:20,224 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 12894 transitions. Word has length 39 [2021-07-09 18:47:20,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:20,224 INFO L482 AbstractCegarLoop]: Abstraction has 3818 states and 12894 transitions. [2021-07-09 18:47:20,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:20,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 12894 transitions. [2021-07-09 18:47:20,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:20,230 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:20,230 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:20,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-07-09 18:47:20,230 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:20,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:20,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1069653122, now seen corresponding path program 57 times [2021-07-09 18:47:20,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:20,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320306822] [2021-07-09 18:47:20,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:20,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:20,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:20,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320306822] [2021-07-09 18:47:20,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320306822] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:20,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:20,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:20,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560737139] [2021-07-09 18:47:20,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:20,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:20,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:20,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:20,426 INFO L87 Difference]: Start difference. First operand 3818 states and 12894 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:22,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:22,763 INFO L93 Difference]: Finished difference Result 6897 states and 23267 transitions. [2021-07-09 18:47:22,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-09 18:47:22,764 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:22,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:22,778 INFO L225 Difference]: With dead ends: 6897 [2021-07-09 18:47:22,778 INFO L226 Difference]: Without dead ends: 6830 [2021-07-09 18:47:22,779 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 1248.8ms TimeCoverageRelationStatistics Valid=399, Invalid=4571, Unknown=0, NotChecked=0, Total=4970 [2021-07-09 18:47:22,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6830 states. [2021-07-09 18:47:22,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6830 to 3854. [2021-07-09 18:47:22,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3854 states, 3853 states have (on average 3.373994290163509) internal successors, (13000), 3853 states have internal predecessors, (13000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 13000 transitions. [2021-07-09 18:47:22,865 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 13000 transitions. Word has length 39 [2021-07-09 18:47:22,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:22,865 INFO L482 AbstractCegarLoop]: Abstraction has 3854 states and 13000 transitions. [2021-07-09 18:47:22,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:22,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 13000 transitions. [2021-07-09 18:47:22,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:22,870 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:22,870 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:22,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-07-09 18:47:22,871 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:22,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:22,871 INFO L82 PathProgramCache]: Analyzing trace with hash 373238172, now seen corresponding path program 58 times [2021-07-09 18:47:22,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:22,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968595605] [2021-07-09 18:47:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:23,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:23,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968595605] [2021-07-09 18:47:23,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968595605] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:23,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:23,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:23,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264818799] [2021-07-09 18:47:23,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:23,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:23,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:23,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:23,062 INFO L87 Difference]: Start difference. First operand 3854 states and 13000 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:26,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:26,304 INFO L93 Difference]: Finished difference Result 8258 states and 27892 transitions. [2021-07-09 18:47:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-07-09 18:47:26,304 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:26,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:26,320 INFO L225 Difference]: With dead ends: 8258 [2021-07-09 18:47:26,321 INFO L226 Difference]: Without dead ends: 8215 [2021-07-09 18:47:26,321 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2601 ImplicationChecksByTransitivity, 1792.4ms TimeCoverageRelationStatistics Valid=621, Invalid=7569, Unknown=0, NotChecked=0, Total=8190 [2021-07-09 18:47:26,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8215 states. [2021-07-09 18:47:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8215 to 3896. [2021-07-09 18:47:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3896 states, 3895 states have (on average 3.371245186136072) internal successors, (13131), 3895 states have internal predecessors, (13131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:26,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 13131 transitions. [2021-07-09 18:47:26,398 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 13131 transitions. Word has length 39 [2021-07-09 18:47:26,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:26,398 INFO L482 AbstractCegarLoop]: Abstraction has 3896 states and 13131 transitions. [2021-07-09 18:47:26,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 13131 transitions. [2021-07-09 18:47:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:26,403 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:26,403 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:26,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-07-09 18:47:26,403 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:26,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:26,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1407360130, now seen corresponding path program 59 times [2021-07-09 18:47:26,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:26,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163670817] [2021-07-09 18:47:26,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:26,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:26,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163670817] [2021-07-09 18:47:26,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163670817] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:26,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:26,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:26,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630323618] [2021-07-09 18:47:26,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:26,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:26,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:26,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:26,604 INFO L87 Difference]: Start difference. First operand 3896 states and 13131 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:29,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:29,897 INFO L93 Difference]: Finished difference Result 8513 states and 28878 transitions. [2021-07-09 18:47:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-09 18:47:29,897 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:29,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:29,914 INFO L225 Difference]: With dead ends: 8513 [2021-07-09 18:47:29,914 INFO L226 Difference]: Without dead ends: 8449 [2021-07-09 18:47:29,915 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2595 ImplicationChecksByTransitivity, 1809.4ms TimeCoverageRelationStatistics Valid=620, Invalid=7570, Unknown=0, NotChecked=0, Total=8190 [2021-07-09 18:47:29,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8449 states. [2021-07-09 18:47:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8449 to 3826. [2021-07-09 18:47:29,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 3825 states have (on average 3.3772549019607845) internal successors, (12918), 3825 states have internal predecessors, (12918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:29,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 12918 transitions. [2021-07-09 18:47:29,994 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 12918 transitions. Word has length 39 [2021-07-09 18:47:29,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:29,994 INFO L482 AbstractCegarLoop]: Abstraction has 3826 states and 12918 transitions. [2021-07-09 18:47:29,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:29,995 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 12918 transitions. [2021-07-09 18:47:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:29,999 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:30,000 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:30,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-07-09 18:47:30,000 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:30,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:30,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1124761968, now seen corresponding path program 60 times [2021-07-09 18:47:30,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:30,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491109694] [2021-07-09 18:47:30,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:30,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:30,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491109694] [2021-07-09 18:47:30,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491109694] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:30,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:30,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:30,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577134441] [2021-07-09 18:47:30,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:30,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:30,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:30,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:30,184 INFO L87 Difference]: Start difference. First operand 3826 states and 12918 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:31,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:31,630 INFO L93 Difference]: Finished difference Result 5641 states and 19191 transitions. [2021-07-09 18:47:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 18:47:31,630 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:31,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:31,641 INFO L225 Difference]: With dead ends: 5641 [2021-07-09 18:47:31,642 INFO L226 Difference]: Without dead ends: 5574 [2021-07-09 18:47:31,642 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 763.4ms TimeCoverageRelationStatistics Valid=256, Invalid=2500, Unknown=0, NotChecked=0, Total=2756 [2021-07-09 18:47:31,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2021-07-09 18:47:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 3854. [2021-07-09 18:47:31,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3854 states, 3853 states have (on average 3.3734752141188684) internal successors, (12998), 3853 states have internal predecessors, (12998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:31,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3854 states to 3854 states and 12998 transitions. [2021-07-09 18:47:31,708 INFO L78 Accepts]: Start accepts. Automaton has 3854 states and 12998 transitions. Word has length 39 [2021-07-09 18:47:31,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:31,708 INFO L482 AbstractCegarLoop]: Abstraction has 3854 states and 12998 transitions. [2021-07-09 18:47:31,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:31,708 INFO L276 IsEmpty]: Start isEmpty. Operand 3854 states and 12998 transitions. [2021-07-09 18:47:31,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:31,713 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:31,713 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:31,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-07-09 18:47:31,713 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:31,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:31,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1276556786, now seen corresponding path program 61 times [2021-07-09 18:47:31,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:31,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858111781] [2021-07-09 18:47:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:31,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:31,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858111781] [2021-07-09 18:47:31,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858111781] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:31,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:31,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:31,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757152325] [2021-07-09 18:47:31,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:31,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:31,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:31,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:31,913 INFO L87 Difference]: Start difference. First operand 3854 states and 12998 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:33,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:33,405 INFO L93 Difference]: Finished difference Result 5629 states and 19151 transitions. [2021-07-09 18:47:33,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-09 18:47:33,405 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:33,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:33,417 INFO L225 Difference]: With dead ends: 5629 [2021-07-09 18:47:33,417 INFO L226 Difference]: Without dead ends: 5566 [2021-07-09 18:47:33,417 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 805.8ms TimeCoverageRelationStatistics Valid=263, Invalid=2599, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:47:33,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5566 states. [2021-07-09 18:47:33,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5566 to 3846. [2021-07-09 18:47:33,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3846 states, 3845 states have (on average 3.375292587776333) internal successors, (12978), 3845 states have internal predecessors, (12978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:33,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 12978 transitions. [2021-07-09 18:47:33,516 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 12978 transitions. Word has length 39 [2021-07-09 18:47:33,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:33,516 INFO L482 AbstractCegarLoop]: Abstraction has 3846 states and 12978 transitions. [2021-07-09 18:47:33,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:33,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 12978 transitions. [2021-07-09 18:47:33,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:33,522 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:33,522 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:33,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-07-09 18:47:33,522 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:33,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:33,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1053199170, now seen corresponding path program 62 times [2021-07-09 18:47:33,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:33,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211328339] [2021-07-09 18:47:33,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:33,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:33,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211328339] [2021-07-09 18:47:33,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211328339] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:33,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:33,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:33,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601753719] [2021-07-09 18:47:33,720 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:33,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:33,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:33,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:33,721 INFO L87 Difference]: Start difference. First operand 3846 states and 12978 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:35,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:35,761 INFO L93 Difference]: Finished difference Result 6214 states and 21108 transitions. [2021-07-09 18:47:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-07-09 18:47:35,762 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:35,774 INFO L225 Difference]: With dead ends: 6214 [2021-07-09 18:47:35,774 INFO L226 Difference]: Without dead ends: 6171 [2021-07-09 18:47:35,775 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1329 ImplicationChecksByTransitivity, 1208.5ms TimeCoverageRelationStatistics Valid=402, Invalid=4428, Unknown=0, NotChecked=0, Total=4830 [2021-07-09 18:47:35,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6171 states. [2021-07-09 18:47:35,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6171 to 3874. [2021-07-09 18:47:35,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 3873 states have (on average 3.3736121869351923) internal successors, (13066), 3873 states have internal predecessors, (13066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 13066 transitions. [2021-07-09 18:47:35,843 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 13066 transitions. Word has length 39 [2021-07-09 18:47:35,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:35,844 INFO L482 AbstractCegarLoop]: Abstraction has 3874 states and 13066 transitions. [2021-07-09 18:47:35,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:35,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 13066 transitions. [2021-07-09 18:47:35,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:35,848 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:35,849 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:35,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-07-09 18:47:35,849 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:35,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:35,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1461169824, now seen corresponding path program 63 times [2021-07-09 18:47:35,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:35,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74345607] [2021-07-09 18:47:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:36,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:36,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:36,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74345607] [2021-07-09 18:47:36,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74345607] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:36,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:36,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:36,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745536076] [2021-07-09 18:47:36,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:36,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:36,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:36,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:36,037 INFO L87 Difference]: Start difference. First operand 3874 states and 13066 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:38,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:38,366 INFO L93 Difference]: Finished difference Result 7060 states and 23999 transitions. [2021-07-09 18:47:38,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-07-09 18:47:38,366 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:38,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:38,380 INFO L225 Difference]: With dead ends: 7060 [2021-07-09 18:47:38,380 INFO L226 Difference]: Without dead ends: 7008 [2021-07-09 18:47:38,381 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 1360.8ms TimeCoverageRelationStatistics Valid=437, Invalid=5113, Unknown=0, NotChecked=0, Total=5550 [2021-07-09 18:47:38,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7008 states. [2021-07-09 18:47:38,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7008 to 3862. [2021-07-09 18:47:38,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 3.375291375291375) internal successors, (13032), 3861 states have internal predecessors, (13032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:38,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 13032 transitions. [2021-07-09 18:47:38,453 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 13032 transitions. Word has length 39 [2021-07-09 18:47:38,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:38,454 INFO L482 AbstractCegarLoop]: Abstraction has 3862 states and 13032 transitions. [2021-07-09 18:47:38,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:38,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 13032 transitions. [2021-07-09 18:47:38,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:38,459 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:38,459 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:38,459 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-07-09 18:47:38,459 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:38,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:38,459 INFO L82 PathProgramCache]: Analyzing trace with hash -134715600, now seen corresponding path program 64 times [2021-07-09 18:47:38,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:38,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634594688] [2021-07-09 18:47:38,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:38,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:38,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634594688] [2021-07-09 18:47:38,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634594688] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:38,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:38,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:38,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132583955] [2021-07-09 18:47:38,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:38,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:38,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:38,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:38,659 INFO L87 Difference]: Start difference. First operand 3862 states and 13032 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:40,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:40,197 INFO L93 Difference]: Finished difference Result 5773 states and 19479 transitions. [2021-07-09 18:47:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-09 18:47:40,198 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:40,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:40,209 INFO L225 Difference]: With dead ends: 5773 [2021-07-09 18:47:40,209 INFO L226 Difference]: Without dead ends: 5718 [2021-07-09 18:47:40,210 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 861.7ms TimeCoverageRelationStatistics Valid=280, Invalid=2800, Unknown=0, NotChecked=0, Total=3080 [2021-07-09 18:47:40,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2021-07-09 18:47:40,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 3864. [2021-07-09 18:47:40,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3864 states, 3863 states have (on average 3.3743204763137458) internal successors, (13035), 3863 states have internal predecessors, (13035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 13035 transitions. [2021-07-09 18:47:40,276 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 13035 transitions. Word has length 39 [2021-07-09 18:47:40,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:40,276 INFO L482 AbstractCegarLoop]: Abstraction has 3864 states and 13035 transitions. [2021-07-09 18:47:40,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:40,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 13035 transitions. [2021-07-09 18:47:40,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:40,281 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:40,281 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:40,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-07-09 18:47:40,282 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:40,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:40,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1037936622, now seen corresponding path program 65 times [2021-07-09 18:47:40,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:40,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768310647] [2021-07-09 18:47:40,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:40,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:40,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768310647] [2021-07-09 18:47:40,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768310647] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:40,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:40,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:40,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517344033] [2021-07-09 18:47:40,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:40,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:40,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:40,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:40,466 INFO L87 Difference]: Start difference. First operand 3864 states and 13035 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:42,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:42,185 INFO L93 Difference]: Finished difference Result 6566 states and 22256 transitions. [2021-07-09 18:47:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-09 18:47:42,185 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:42,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:42,199 INFO L225 Difference]: With dead ends: 6566 [2021-07-09 18:47:42,199 INFO L226 Difference]: Without dead ends: 6520 [2021-07-09 18:47:42,199 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 899.8ms TimeCoverageRelationStatistics Valid=297, Invalid=3125, Unknown=0, NotChecked=0, Total=3422 [2021-07-09 18:47:42,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2021-07-09 18:47:42,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 3868. [2021-07-09 18:47:42,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 3867 states have (on average 3.3728988880268944) internal successors, (13043), 3867 states have internal predecessors, (13043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:42,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 13043 transitions. [2021-07-09 18:47:42,272 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 13043 transitions. Word has length 39 [2021-07-09 18:47:42,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:42,272 INFO L482 AbstractCegarLoop]: Abstraction has 3868 states and 13043 transitions. [2021-07-09 18:47:42,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:42,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 13043 transitions. [2021-07-09 18:47:42,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:42,277 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:42,277 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:42,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-07-09 18:47:42,277 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:42,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:42,278 INFO L82 PathProgramCache]: Analyzing trace with hash 790470460, now seen corresponding path program 66 times [2021-07-09 18:47:42,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:42,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081498838] [2021-07-09 18:47:42,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:42,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:42,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081498838] [2021-07-09 18:47:42,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081498838] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:42,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:42,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:42,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961236190] [2021-07-09 18:47:42,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:42,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:42,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:42,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:42,458 INFO L87 Difference]: Start difference. First operand 3868 states and 13043 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:44,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:44,044 INFO L93 Difference]: Finished difference Result 5676 states and 19264 transitions. [2021-07-09 18:47:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 18:47:44,044 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:44,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:44,056 INFO L225 Difference]: With dead ends: 5676 [2021-07-09 18:47:44,057 INFO L226 Difference]: Without dead ends: 5627 [2021-07-09 18:47:44,057 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 886.5ms TimeCoverageRelationStatistics Valid=282, Invalid=2798, Unknown=0, NotChecked=0, Total=3080 [2021-07-09 18:47:44,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5627 states. [2021-07-09 18:47:44,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5627 to 3858. [2021-07-09 18:47:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3857 states have (on average 3.3761991184858697) internal successors, (13022), 3857 states have internal predecessors, (13022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:44,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 13022 transitions. [2021-07-09 18:47:44,161 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 13022 transitions. Word has length 39 [2021-07-09 18:47:44,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:44,161 INFO L482 AbstractCegarLoop]: Abstraction has 3858 states and 13022 transitions. [2021-07-09 18:47:44,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:44,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 13022 transitions. [2021-07-09 18:47:44,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:44,167 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:44,167 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:44,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-07-09 18:47:44,167 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:44,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:44,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1831448740, now seen corresponding path program 67 times [2021-07-09 18:47:44,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:44,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757833017] [2021-07-09 18:47:44,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:44,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:44,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757833017] [2021-07-09 18:47:44,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757833017] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:44,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:44,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:44,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915570051] [2021-07-09 18:47:44,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:44,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:44,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:44,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:44,366 INFO L87 Difference]: Start difference. First operand 3858 states and 13022 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:45,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:45,795 INFO L93 Difference]: Finished difference Result 5685 states and 19349 transitions. [2021-07-09 18:47:45,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 18:47:45,795 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:45,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:45,806 INFO L225 Difference]: With dead ends: 5685 [2021-07-09 18:47:45,806 INFO L226 Difference]: Without dead ends: 5618 [2021-07-09 18:47:45,806 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 735.4ms TimeCoverageRelationStatistics Valid=217, Invalid=2135, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 18:47:45,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5618 states. [2021-07-09 18:47:45,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5618 to 3898. [2021-07-09 18:47:45,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3898 states, 3897 states have (on average 3.369258403900436) internal successors, (13130), 3897 states have internal predecessors, (13130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:45,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 13130 transitions. [2021-07-09 18:47:45,869 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 13130 transitions. Word has length 39 [2021-07-09 18:47:45,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:45,869 INFO L482 AbstractCegarLoop]: Abstraction has 3898 states and 13130 transitions. [2021-07-09 18:47:45,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:45,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 13130 transitions. [2021-07-09 18:47:45,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:45,876 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:45,876 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:45,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-07-09 18:47:45,877 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:45,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:45,877 INFO L82 PathProgramCache]: Analyzing trace with hash 62199802, now seen corresponding path program 68 times [2021-07-09 18:47:45,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:45,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31619996] [2021-07-09 18:47:45,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:46,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:46,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31619996] [2021-07-09 18:47:46,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31619996] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:46,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:46,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:46,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157795752] [2021-07-09 18:47:46,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:46,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:46,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:46,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:46,073 INFO L87 Difference]: Start difference. First operand 3898 states and 13130 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:47,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:47,510 INFO L93 Difference]: Finished difference Result 5673 states and 19309 transitions. [2021-07-09 18:47:47,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-09 18:47:47,510 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:47,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:47,522 INFO L225 Difference]: With dead ends: 5673 [2021-07-09 18:47:47,522 INFO L226 Difference]: Without dead ends: 5610 [2021-07-09 18:47:47,522 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 738.7ms TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 18:47:47,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5610 states. [2021-07-09 18:47:47,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5610 to 3890. [2021-07-09 18:47:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3890 states, 3889 states have (on average 3.370017999485729) internal successors, (13106), 3889 states have internal predecessors, (13106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:47,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3890 states to 3890 states and 13106 transitions. [2021-07-09 18:47:47,600 INFO L78 Accepts]: Start accepts. Automaton has 3890 states and 13106 transitions. Word has length 39 [2021-07-09 18:47:47,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:47,600 INFO L482 AbstractCegarLoop]: Abstraction has 3890 states and 13106 transitions. [2021-07-09 18:47:47,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:47,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3890 states and 13106 transitions. [2021-07-09 18:47:47,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:47,605 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:47,605 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:47,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-07-09 18:47:47,605 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:47,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:47,606 INFO L82 PathProgramCache]: Analyzing trace with hash 126833308, now seen corresponding path program 69 times [2021-07-09 18:47:47,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:47,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730958591] [2021-07-09 18:47:47,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:47,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:47,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730958591] [2021-07-09 18:47:47,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730958591] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:47,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:47,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:47,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237688978] [2021-07-09 18:47:47,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:47,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:47,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:47,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:47,786 INFO L87 Difference]: Start difference. First operand 3890 states and 13106 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:49,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:49,210 INFO L93 Difference]: Finished difference Result 5697 states and 19369 transitions. [2021-07-09 18:47:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 18:47:49,210 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:49,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:49,221 INFO L225 Difference]: With dead ends: 5697 [2021-07-09 18:47:49,221 INFO L226 Difference]: Without dead ends: 5574 [2021-07-09 18:47:49,221 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 712.7ms TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 18:47:49,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2021-07-09 18:47:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 3858. [2021-07-09 18:47:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3857 states have (on average 3.3720508166969148) internal successors, (13006), 3857 states have internal predecessors, (13006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 13006 transitions. [2021-07-09 18:47:49,287 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 13006 transitions. Word has length 39 [2021-07-09 18:47:49,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:49,288 INFO L482 AbstractCegarLoop]: Abstraction has 3858 states and 13006 transitions. [2021-07-09 18:47:49,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:49,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 13006 transitions. [2021-07-09 18:47:49,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:49,293 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:49,293 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:49,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-07-09 18:47:49,293 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:49,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:49,293 INFO L82 PathProgramCache]: Analyzing trace with hash 950439516, now seen corresponding path program 70 times [2021-07-09 18:47:49,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:49,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320486705] [2021-07-09 18:47:49,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:49,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:49,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320486705] [2021-07-09 18:47:49,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320486705] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:49,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:49,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:49,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84928412] [2021-07-09 18:47:49,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:49,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:49,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:49,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:49,489 INFO L87 Difference]: Start difference. First operand 3858 states and 13006 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:51,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:51,517 INFO L93 Difference]: Finished difference Result 6282 states and 21379 transitions. [2021-07-09 18:47:51,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-07-09 18:47:51,517 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:51,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:51,529 INFO L225 Difference]: With dead ends: 6282 [2021-07-09 18:47:51,529 INFO L226 Difference]: Without dead ends: 6239 [2021-07-09 18:47:51,530 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 1171.8ms TimeCoverageRelationStatistics Valid=370, Invalid=3920, Unknown=0, NotChecked=0, Total=4290 [2021-07-09 18:47:51,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6239 states. [2021-07-09 18:47:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6239 to 3872. [2021-07-09 18:47:51,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3872 states, 3871 states have (on average 3.370446912942392) internal successors, (13047), 3871 states have internal predecessors, (13047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3872 states to 3872 states and 13047 transitions. [2021-07-09 18:47:51,598 INFO L78 Accepts]: Start accepts. Automaton has 3872 states and 13047 transitions. Word has length 39 [2021-07-09 18:47:51,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:51,599 INFO L482 AbstractCegarLoop]: Abstraction has 3872 states and 13047 transitions. [2021-07-09 18:47:51,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:51,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3872 states and 13047 transitions. [2021-07-09 18:47:51,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:51,604 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:51,604 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:51,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-07-09 18:47:51,604 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:51,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:51,604 INFO L82 PathProgramCache]: Analyzing trace with hash -830158786, now seen corresponding path program 71 times [2021-07-09 18:47:51,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:51,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34881140] [2021-07-09 18:47:51,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:51,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:51,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34881140] [2021-07-09 18:47:51,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34881140] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:51,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:51,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:51,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754162504] [2021-07-09 18:47:51,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:51,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:51,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:51,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:51,783 INFO L87 Difference]: Start difference. First operand 3872 states and 13047 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:54,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:54,054 INFO L93 Difference]: Finished difference Result 7143 states and 24309 transitions. [2021-07-09 18:47:54,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-09 18:47:54,054 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:54,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:54,070 INFO L225 Difference]: With dead ends: 7143 [2021-07-09 18:47:54,070 INFO L226 Difference]: Without dead ends: 7091 [2021-07-09 18:47:54,071 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 1274.1ms TimeCoverageRelationStatistics Valid=412, Invalid=4700, Unknown=0, NotChecked=0, Total=5112 [2021-07-09 18:47:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7091 states. [2021-07-09 18:47:54,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7091 to 3842. [2021-07-09 18:47:54,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3842 states, 3841 states have (on average 3.3720385316323873) internal successors, (12952), 3841 states have internal predecessors, (12952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3842 states to 3842 states and 12952 transitions. [2021-07-09 18:47:54,151 INFO L78 Accepts]: Start accepts. Automaton has 3842 states and 12952 transitions. Word has length 39 [2021-07-09 18:47:54,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:54,151 INFO L482 AbstractCegarLoop]: Abstraction has 3842 states and 12952 transitions. [2021-07-09 18:47:54,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:54,151 INFO L276 IsEmpty]: Start isEmpty. Operand 3842 states and 12952 transitions. [2021-07-09 18:47:54,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:54,156 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:54,156 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:54,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-07-09 18:47:54,157 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:54,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:54,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1868923086, now seen corresponding path program 72 times [2021-07-09 18:47:54,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:54,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015283437] [2021-07-09 18:47:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:54,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:54,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015283437] [2021-07-09 18:47:54,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015283437] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:54,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:54,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:54,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438846156] [2021-07-09 18:47:54,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:54,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:54,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:54,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:54,330 INFO L87 Difference]: Start difference. First operand 3842 states and 12952 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:55,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:55,793 INFO L93 Difference]: Finished difference Result 5803 states and 19576 transitions. [2021-07-09 18:47:55,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 18:47:55,793 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:55,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:55,804 INFO L225 Difference]: With dead ends: 5803 [2021-07-09 18:47:55,805 INFO L226 Difference]: Without dead ends: 5748 [2021-07-09 18:47:55,805 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 754.5ms TimeCoverageRelationStatistics Valid=250, Invalid=2402, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 18:47:55,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5748 states. [2021-07-09 18:47:55,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5748 to 3850. [2021-07-09 18:47:55,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 3849 states have (on average 3.3712652637048586) internal successors, (12976), 3849 states have internal predecessors, (12976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:55,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 12976 transitions. [2021-07-09 18:47:55,870 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 12976 transitions. Word has length 39 [2021-07-09 18:47:55,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:55,870 INFO L482 AbstractCegarLoop]: Abstraction has 3850 states and 12976 transitions. [2021-07-09 18:47:55,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:55,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 12976 transitions. [2021-07-09 18:47:55,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:55,875 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:55,875 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:55,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-07-09 18:47:55,875 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:55,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:55,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1253391988, now seen corresponding path program 73 times [2021-07-09 18:47:55,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:55,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523643548] [2021-07-09 18:47:55,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:56,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:56,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:56,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523643548] [2021-07-09 18:47:56,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523643548] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:56,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:56,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:56,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159972955] [2021-07-09 18:47:56,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:56,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:56,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:56,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:56,054 INFO L87 Difference]: Start difference. First operand 3850 states and 12976 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:57,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:57,753 INFO L93 Difference]: Finished difference Result 6664 states and 22510 transitions. [2021-07-09 18:47:57,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 18:47:57,754 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:57,767 INFO L225 Difference]: With dead ends: 6664 [2021-07-09 18:47:57,767 INFO L226 Difference]: Without dead ends: 6604 [2021-07-09 18:47:57,768 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 885.2ms TimeCoverageRelationStatistics Valid=281, Invalid=2911, Unknown=0, NotChecked=0, Total=3192 [2021-07-09 18:47:57,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2021-07-09 18:47:57,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 3848. [2021-07-09 18:47:57,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3847 states have (on average 3.371718221991162) internal successors, (12971), 3847 states have internal predecessors, (12971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 12971 transitions. [2021-07-09 18:47:57,838 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 12971 transitions. Word has length 39 [2021-07-09 18:47:57,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:57,838 INFO L482 AbstractCegarLoop]: Abstraction has 3848 states and 12971 transitions. [2021-07-09 18:47:57,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:57,838 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 12971 transitions. [2021-07-09 18:47:57,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:57,843 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:57,843 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:57,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-07-09 18:47:57,843 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:57,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:57,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1164171706, now seen corresponding path program 74 times [2021-07-09 18:47:57,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:57,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4946228] [2021-07-09 18:47:57,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:58,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:58,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4946228] [2021-07-09 18:47:58,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4946228] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:58,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:58,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:58,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008618968] [2021-07-09 18:47:58,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:58,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:58,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:58,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:58,044 INFO L87 Difference]: Start difference. First operand 3848 states and 12971 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:47:59,454 INFO L93 Difference]: Finished difference Result 5772 states and 19530 transitions. [2021-07-09 18:47:59,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-09 18:47:59,455 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:47:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:47:59,466 INFO L225 Difference]: With dead ends: 5772 [2021-07-09 18:47:59,466 INFO L226 Difference]: Without dead ends: 5681 [2021-07-09 18:47:59,467 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 749.0ms TimeCoverageRelationStatistics Valid=235, Invalid=2315, Unknown=0, NotChecked=0, Total=2550 [2021-07-09 18:47:59,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5681 states. [2021-07-09 18:47:59,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5681 to 3848. [2021-07-09 18:47:59,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3847 states have (on average 3.3701585651156747) internal successors, (12965), 3847 states have internal predecessors, (12965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 12965 transitions. [2021-07-09 18:47:59,533 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 12965 transitions. Word has length 39 [2021-07-09 18:47:59,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:47:59,533 INFO L482 AbstractCegarLoop]: Abstraction has 3848 states and 12965 transitions. [2021-07-09 18:47:59,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:47:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 12965 transitions. [2021-07-09 18:47:59,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:47:59,538 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:47:59,538 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:47:59,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-07-09 18:47:59,538 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:47:59,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:47:59,538 INFO L82 PathProgramCache]: Analyzing trace with hash -338310500, now seen corresponding path program 75 times [2021-07-09 18:47:59,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:47:59,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767619391] [2021-07-09 18:47:59,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:47:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:47:59,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:47:59,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:47:59,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767619391] [2021-07-09 18:47:59,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767619391] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:47:59,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:47:59,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:47:59,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666999431] [2021-07-09 18:47:59,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:47:59,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:47:59,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:47:59,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:47:59,735 INFO L87 Difference]: Start difference. First operand 3848 states and 12965 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:01,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:01,399 INFO L93 Difference]: Finished difference Result 6585 states and 22332 transitions. [2021-07-09 18:48:01,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 18:48:01,399 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:01,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:01,413 INFO L225 Difference]: With dead ends: 6585 [2021-07-09 18:48:01,413 INFO L226 Difference]: Without dead ends: 6469 [2021-07-09 18:48:01,413 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 838.1ms TimeCoverageRelationStatistics Valid=260, Invalid=2710, Unknown=0, NotChecked=0, Total=2970 [2021-07-09 18:48:01,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6469 states. [2021-07-09 18:48:01,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6469 to 3826. [2021-07-09 18:48:01,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 3825 states have (on average 3.3762091503267975) internal successors, (12914), 3825 states have internal predecessors, (12914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:01,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 12914 transitions. [2021-07-09 18:48:01,485 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 12914 transitions. Word has length 39 [2021-07-09 18:48:01,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:01,485 INFO L482 AbstractCegarLoop]: Abstraction has 3826 states and 12914 transitions. [2021-07-09 18:48:01,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:01,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 12914 transitions. [2021-07-09 18:48:01,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:01,508 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:01,508 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:01,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-07-09 18:48:01,509 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:01,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:01,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1260584684, now seen corresponding path program 76 times [2021-07-09 18:48:01,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:01,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223199461] [2021-07-09 18:48:01,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:01,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:01,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223199461] [2021-07-09 18:48:01,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223199461] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:01,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:01,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:48:01,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770354524] [2021-07-09 18:48:01,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:48:01,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:01,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:48:01,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:48:01,685 INFO L87 Difference]: Start difference. First operand 3826 states and 12914 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:02,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:02,933 INFO L93 Difference]: Finished difference Result 5481 states and 18673 transitions. [2021-07-09 18:48:02,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-09 18:48:02,934 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:02,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:02,945 INFO L225 Difference]: With dead ends: 5481 [2021-07-09 18:48:02,945 INFO L226 Difference]: Without dead ends: 5414 [2021-07-09 18:48:02,945 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 647.1ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 18:48:02,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5414 states. [2021-07-09 18:48:02,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5414 to 3878. [2021-07-09 18:48:03,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 3877 states have (on average 3.3660046427650245) internal successors, (13050), 3877 states have internal predecessors, (13050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:03,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 13050 transitions. [2021-07-09 18:48:03,010 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 13050 transitions. Word has length 39 [2021-07-09 18:48:03,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:03,010 INFO L482 AbstractCegarLoop]: Abstraction has 3878 states and 13050 transitions. [2021-07-09 18:48:03,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:03,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 13050 transitions. [2021-07-09 18:48:03,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:03,014 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:03,014 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:03,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-07-09 18:48:03,015 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:03,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:03,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1140734070, now seen corresponding path program 77 times [2021-07-09 18:48:03,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:03,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973591608] [2021-07-09 18:48:03,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:03,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:03,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973591608] [2021-07-09 18:48:03,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973591608] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:03,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:03,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:48:03,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328003542] [2021-07-09 18:48:03,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:48:03,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:03,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:48:03,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:48:03,196 INFO L87 Difference]: Start difference. First operand 3878 states and 13050 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:04,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:04,477 INFO L93 Difference]: Finished difference Result 5469 states and 18633 transitions. [2021-07-09 18:48:04,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-07-09 18:48:04,477 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:04,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:04,488 INFO L225 Difference]: With dead ends: 5469 [2021-07-09 18:48:04,488 INFO L226 Difference]: Without dead ends: 5406 [2021-07-09 18:48:04,488 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 661.0ms TimeCoverageRelationStatistics Valid=201, Invalid=1961, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 18:48:04,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5406 states. [2021-07-09 18:48:04,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5406 to 3870. [2021-07-09 18:48:04,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 3869 states have (on average 3.3667614370638406) internal successors, (13026), 3869 states have internal predecessors, (13026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 13026 transitions. [2021-07-09 18:48:04,556 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 13026 transitions. Word has length 39 [2021-07-09 18:48:04,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:04,556 INFO L482 AbstractCegarLoop]: Abstraction has 3870 states and 13026 transitions. [2021-07-09 18:48:04,556 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:04,556 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 13026 transitions. [2021-07-09 18:48:04,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:04,561 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:04,561 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:04,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-07-09 18:48:04,562 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:04,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:04,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1076100564, now seen corresponding path program 78 times [2021-07-09 18:48:04,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:04,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901539016] [2021-07-09 18:48:04,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:04,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:04,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901539016] [2021-07-09 18:48:04,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901539016] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:04,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:04,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:48:04,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495273541] [2021-07-09 18:48:04,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:48:04,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:04,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:48:04,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:48:04,745 INFO L87 Difference]: Start difference. First operand 3870 states and 13026 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:05,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:05,972 INFO L93 Difference]: Finished difference Result 5477 states and 18645 transitions. [2021-07-09 18:48:05,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-07-09 18:48:05,972 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:05,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:05,983 INFO L225 Difference]: With dead ends: 5477 [2021-07-09 18:48:05,983 INFO L226 Difference]: Without dead ends: 5334 [2021-07-09 18:48:05,983 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 655.0ms TimeCoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 18:48:05,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5334 states. [2021-07-09 18:48:06,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5334 to 3818. [2021-07-09 18:48:06,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 3817 states have (on average 3.378045585538381) internal successors, (12894), 3817 states have internal predecessors, (12894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:06,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 12894 transitions. [2021-07-09 18:48:06,046 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 12894 transitions. Word has length 39 [2021-07-09 18:48:06,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:06,047 INFO L482 AbstractCegarLoop]: Abstraction has 3818 states and 12894 transitions. [2021-07-09 18:48:06,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:06,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 12894 transitions. [2021-07-09 18:48:06,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:06,051 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:06,052 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:06,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-07-09 18:48:06,052 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:06,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:06,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1946962860, now seen corresponding path program 79 times [2021-07-09 18:48:06,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:06,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525770506] [2021-07-09 18:48:06,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:06,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:06,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525770506] [2021-07-09 18:48:06,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525770506] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:06,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:06,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:48:06,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105771284] [2021-07-09 18:48:06,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:48:06,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:06,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:48:06,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:48:06,217 INFO L87 Difference]: Start difference. First operand 3818 states and 12894 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:09,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:09,691 INFO L93 Difference]: Finished difference Result 9174 states and 31032 transitions. [2021-07-09 18:48:09,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-07-09 18:48:09,692 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:09,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:09,710 INFO L225 Difference]: With dead ends: 9174 [2021-07-09 18:48:09,710 INFO L226 Difference]: Without dead ends: 9044 [2021-07-09 18:48:09,711 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3103 ImplicationChecksByTransitivity, 1906.0ms TimeCoverageRelationStatistics Valid=708, Invalid=8604, Unknown=0, NotChecked=0, Total=9312 [2021-07-09 18:48:09,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9044 states. [2021-07-09 18:48:09,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9044 to 4543. [2021-07-09 18:48:09,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4543 states, 4542 states have (on average 3.403566710700132) internal successors, (15459), 4542 states have internal predecessors, (15459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:09,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4543 states to 4543 states and 15459 transitions. [2021-07-09 18:48:09,801 INFO L78 Accepts]: Start accepts. Automaton has 4543 states and 15459 transitions. Word has length 39 [2021-07-09 18:48:09,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:09,802 INFO L482 AbstractCegarLoop]: Abstraction has 4543 states and 15459 transitions. [2021-07-09 18:48:09,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:09,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4543 states and 15459 transitions. [2021-07-09 18:48:09,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:09,808 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:09,808 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:09,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-07-09 18:48:09,808 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:09,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:09,809 INFO L82 PathProgramCache]: Analyzing trace with hash -905113142, now seen corresponding path program 80 times [2021-07-09 18:48:09,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:09,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085177786] [2021-07-09 18:48:09,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:09,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:09,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085177786] [2021-07-09 18:48:09,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085177786] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:09,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:09,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:48:09,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405177775] [2021-07-09 18:48:09,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:48:09,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:09,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:48:09,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:48:09,977 INFO L87 Difference]: Start difference. First operand 4543 states and 15459 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:14,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:14,721 INFO L93 Difference]: Finished difference Result 11582 states and 39219 transitions. [2021-07-09 18:48:14,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-07-09 18:48:14,721 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:14,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:14,744 INFO L225 Difference]: With dead ends: 11582 [2021-07-09 18:48:14,744 INFO L226 Difference]: Without dead ends: 11476 [2021-07-09 18:48:14,745 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6011 ImplicationChecksByTransitivity, 2872.3ms TimeCoverageRelationStatistics Valid=1123, Invalid=15133, Unknown=0, NotChecked=0, Total=16256 [2021-07-09 18:48:14,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11476 states. [2021-07-09 18:48:14,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11476 to 5005. [2021-07-09 18:48:14,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5005 states, 5004 states have (on average 3.4332533972821744) internal successors, (17180), 5004 states have internal predecessors, (17180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5005 states to 5005 states and 17180 transitions. [2021-07-09 18:48:14,858 INFO L78 Accepts]: Start accepts. Automaton has 5005 states and 17180 transitions. Word has length 39 [2021-07-09 18:48:14,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:14,858 INFO L482 AbstractCegarLoop]: Abstraction has 5005 states and 17180 transitions. [2021-07-09 18:48:14,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:14,858 INFO L276 IsEmpty]: Start isEmpty. Operand 5005 states and 17180 transitions. [2021-07-09 18:48:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:14,865 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:14,865 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:14,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-07-09 18:48:14,865 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:14,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:14,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1609255852, now seen corresponding path program 81 times [2021-07-09 18:48:14,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:14,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329501640] [2021-07-09 18:48:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:15,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:15,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329501640] [2021-07-09 18:48:15,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329501640] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:15,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:15,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:48:15,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043505108] [2021-07-09 18:48:15,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:48:15,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:15,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:48:15,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:48:15,028 INFO L87 Difference]: Start difference. First operand 5005 states and 17180 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:19,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:19,948 INFO L93 Difference]: Finished difference Result 12191 states and 41382 transitions. [2021-07-09 18:48:19,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-07-09 18:48:19,948 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:19,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:19,973 INFO L225 Difference]: With dead ends: 12191 [2021-07-09 18:48:19,973 INFO L226 Difference]: Without dead ends: 12052 [2021-07-09 18:48:19,975 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6441 ImplicationChecksByTransitivity, 2994.6ms TimeCoverageRelationStatistics Valid=1171, Invalid=16121, Unknown=0, NotChecked=0, Total=17292 [2021-07-09 18:48:20,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12052 states. [2021-07-09 18:48:20,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12052 to 5161. [2021-07-09 18:48:20,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 3.442829457364341) internal successors, (17765), 5160 states have internal predecessors, (17765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:20,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 17765 transitions. [2021-07-09 18:48:20,117 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 17765 transitions. Word has length 39 [2021-07-09 18:48:20,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:20,117 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 17765 transitions. [2021-07-09 18:48:20,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:20,117 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 17765 transitions. [2021-07-09 18:48:20,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:20,124 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:20,124 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:20,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-07-09 18:48:20,124 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:20,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:20,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1200440236, now seen corresponding path program 82 times [2021-07-09 18:48:20,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:20,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992493155] [2021-07-09 18:48:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:20,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:20,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992493155] [2021-07-09 18:48:20,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992493155] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:20,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:20,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:48:20,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274506076] [2021-07-09 18:48:20,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:48:20,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:20,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:48:20,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:48:20,298 INFO L87 Difference]: Start difference. First operand 5161 states and 17765 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:25,802 INFO L93 Difference]: Finished difference Result 12631 states and 43057 transitions. [2021-07-09 18:48:25,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2021-07-09 18:48:25,802 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:25,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:25,827 INFO L225 Difference]: With dead ends: 12631 [2021-07-09 18:48:25,827 INFO L226 Difference]: Without dead ends: 12414 [2021-07-09 18:48:25,828 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6976 ImplicationChecksByTransitivity, 3170.6ms TimeCoverageRelationStatistics Valid=1168, Invalid=17464, Unknown=0, NotChecked=0, Total=18632 [2021-07-09 18:48:25,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12414 states. [2021-07-09 18:48:25,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12414 to 5293. [2021-07-09 18:48:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5292 states have (on average 3.4569160997732427) internal successors, (18294), 5292 states have internal predecessors, (18294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:25,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 18294 transitions. [2021-07-09 18:48:25,949 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 18294 transitions. Word has length 39 [2021-07-09 18:48:25,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:25,949 INFO L482 AbstractCegarLoop]: Abstraction has 5293 states and 18294 transitions. [2021-07-09 18:48:25,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:25,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 18294 transitions. [2021-07-09 18:48:25,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:25,956 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:25,956 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:25,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-07-09 18:48:25,956 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:25,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:25,957 INFO L82 PathProgramCache]: Analyzing trace with hash -124115176, now seen corresponding path program 83 times [2021-07-09 18:48:25,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:25,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596257590] [2021-07-09 18:48:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:26,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:26,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:26,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596257590] [2021-07-09 18:48:26,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596257590] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:26,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:26,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:48:26,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903148539] [2021-07-09 18:48:26,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:48:26,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:26,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:48:26,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:48:26,138 INFO L87 Difference]: Start difference. First operand 5293 states and 18294 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:30,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:30,103 INFO L93 Difference]: Finished difference Result 10886 states and 37113 transitions. [2021-07-09 18:48:30,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-07-09 18:48:30,103 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:30,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:30,126 INFO L225 Difference]: With dead ends: 10886 [2021-07-09 18:48:30,126 INFO L226 Difference]: Without dead ends: 10819 [2021-07-09 18:48:30,127 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3762 ImplicationChecksByTransitivity, 2201.3ms TimeCoverageRelationStatistics Valid=796, Invalid=10334, Unknown=0, NotChecked=0, Total=11130 [2021-07-09 18:48:30,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2021-07-09 18:48:30,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 5327. [2021-07-09 18:48:30,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5327 states, 5326 states have (on average 3.4555013143071722) internal successors, (18404), 5326 states have internal predecessors, (18404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5327 states to 5327 states and 18404 transitions. [2021-07-09 18:48:30,240 INFO L78 Accepts]: Start accepts. Automaton has 5327 states and 18404 transitions. Word has length 39 [2021-07-09 18:48:30,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:30,240 INFO L482 AbstractCegarLoop]: Abstraction has 5327 states and 18404 transitions. [2021-07-09 18:48:30,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:30,240 INFO L276 IsEmpty]: Start isEmpty. Operand 5327 states and 18404 transitions. [2021-07-09 18:48:30,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:30,247 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:30,247 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:30,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-07-09 18:48:30,247 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:30,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:30,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1318776118, now seen corresponding path program 84 times [2021-07-09 18:48:30,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:30,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501994041] [2021-07-09 18:48:30,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:30,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:30,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501994041] [2021-07-09 18:48:30,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501994041] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:30,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:30,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:48:30,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528337504] [2021-07-09 18:48:30,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:48:30,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:30,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:48:30,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:48:30,431 INFO L87 Difference]: Start difference. First operand 5327 states and 18404 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:35,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:35,637 INFO L93 Difference]: Finished difference Result 12407 states and 42028 transitions. [2021-07-09 18:48:35,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-07-09 18:48:35,637 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:35,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:35,663 INFO L225 Difference]: With dead ends: 12407 [2021-07-09 18:48:35,663 INFO L226 Difference]: Without dead ends: 12364 [2021-07-09 18:48:35,664 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6917 ImplicationChecksByTransitivity, 3182.6ms TimeCoverageRelationStatistics Valid=1217, Invalid=17415, Unknown=0, NotChecked=0, Total=18632 [2021-07-09 18:48:35,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12364 states. [2021-07-09 18:48:35,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12364 to 5367. [2021-07-09 18:48:35,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5367 states, 5366 states have (on average 3.4549012299664557) internal successors, (18539), 5366 states have internal predecessors, (18539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:35,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5367 states to 5367 states and 18539 transitions. [2021-07-09 18:48:35,789 INFO L78 Accepts]: Start accepts. Automaton has 5367 states and 18539 transitions. Word has length 39 [2021-07-09 18:48:35,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:35,789 INFO L482 AbstractCegarLoop]: Abstraction has 5367 states and 18539 transitions. [2021-07-09 18:48:35,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:35,789 INFO L276 IsEmpty]: Start isEmpty. Operand 5367 states and 18539 transitions. [2021-07-09 18:48:35,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:35,796 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:35,797 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:35,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-07-09 18:48:35,797 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:35,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:35,797 INFO L82 PathProgramCache]: Analyzing trace with hash -461822184, now seen corresponding path program 85 times [2021-07-09 18:48:35,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:35,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29259097] [2021-07-09 18:48:35,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:35,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:35,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29259097] [2021-07-09 18:48:35,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29259097] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:35,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:35,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:48:35,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071900346] [2021-07-09 18:48:35,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:48:35,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:35,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:48:35,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:48:35,986 INFO L87 Difference]: Start difference. First operand 5367 states and 18539 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:41,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:41,275 INFO L93 Difference]: Finished difference Result 12963 states and 44015 transitions. [2021-07-09 18:48:41,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2021-07-09 18:48:41,276 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:41,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:41,302 INFO L225 Difference]: With dead ends: 12963 [2021-07-09 18:48:41,303 INFO L226 Difference]: Without dead ends: 12887 [2021-07-09 18:48:41,304 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7138 ImplicationChecksByTransitivity, 3237.2ms TimeCoverageRelationStatistics Valid=1246, Invalid=17936, Unknown=0, NotChecked=0, Total=19182 [2021-07-09 18:48:41,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12887 states. [2021-07-09 18:48:41,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12887 to 5329. [2021-07-09 18:48:41,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5329 states, 5328 states have (on average 3.459834834834835) internal successors, (18434), 5328 states have internal predecessors, (18434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:41,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5329 states to 5329 states and 18434 transitions. [2021-07-09 18:48:41,435 INFO L78 Accepts]: Start accepts. Automaton has 5329 states and 18434 transitions. Word has length 39 [2021-07-09 18:48:41,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:41,436 INFO L482 AbstractCegarLoop]: Abstraction has 5329 states and 18434 transitions. [2021-07-09 18:48:41,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:41,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5329 states and 18434 transitions. [2021-07-09 18:48:41,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:41,443 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:41,443 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:41,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-07-09 18:48:41,444 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:41,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:41,444 INFO L82 PathProgramCache]: Analyzing trace with hash 2070299914, now seen corresponding path program 86 times [2021-07-09 18:48:41,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:41,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076690912] [2021-07-09 18:48:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:41,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:41,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076690912] [2021-07-09 18:48:41,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076690912] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:41,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:41,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:48:41,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935481838] [2021-07-09 18:48:41,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:48:41,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:41,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:48:41,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:48:41,633 INFO L87 Difference]: Start difference. First operand 5329 states and 18434 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:44,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:44,039 INFO L93 Difference]: Finished difference Result 9492 states and 32707 transitions. [2021-07-09 18:48:44,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-07-09 18:48:44,043 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:44,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:44,063 INFO L225 Difference]: With dead ends: 9492 [2021-07-09 18:48:44,063 INFO L226 Difference]: Without dead ends: 9425 [2021-07-09 18:48:44,064 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 1285.6ms TimeCoverageRelationStatistics Valid=454, Invalid=4948, Unknown=0, NotChecked=0, Total=5402 [2021-07-09 18:48:44,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9425 states. [2021-07-09 18:48:44,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9425 to 5341. [2021-07-09 18:48:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5341 states, 5340 states have (on average 3.4569288389513106) internal successors, (18460), 5340 states have internal predecessors, (18460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:44,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 18460 transitions. [2021-07-09 18:48:44,184 INFO L78 Accepts]: Start accepts. Automaton has 5341 states and 18460 transitions. Word has length 39 [2021-07-09 18:48:44,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:44,184 INFO L482 AbstractCegarLoop]: Abstraction has 5341 states and 18460 transitions. [2021-07-09 18:48:44,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:44,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5341 states and 18460 transitions. [2021-07-09 18:48:44,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:44,191 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:44,191 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:44,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-07-09 18:48:44,192 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:44,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:44,192 INFO L82 PathProgramCache]: Analyzing trace with hash -331018840, now seen corresponding path program 87 times [2021-07-09 18:48:44,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:44,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346057327] [2021-07-09 18:48:44,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:44,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:44,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346057327] [2021-07-09 18:48:44,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346057327] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:44,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:44,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:48:44,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136938721] [2021-07-09 18:48:44,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:48:44,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:44,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:48:44,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:48:44,365 INFO L87 Difference]: Start difference. First operand 5341 states and 18460 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:46,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:46,535 INFO L93 Difference]: Finished difference Result 9000 states and 30945 transitions. [2021-07-09 18:48:46,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-07-09 18:48:46,536 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:46,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:46,556 INFO L225 Difference]: With dead ends: 9000 [2021-07-09 18:48:46,556 INFO L226 Difference]: Without dead ends: 8937 [2021-07-09 18:48:46,557 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1377 ImplicationChecksByTransitivity, 1197.2ms TimeCoverageRelationStatistics Valid=431, Invalid=4539, Unknown=0, NotChecked=0, Total=4970 [2021-07-09 18:48:46,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8937 states. [2021-07-09 18:48:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8937 to 5333. [2021-07-09 18:48:46,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5333 states, 5332 states have (on average 3.458364591147787) internal successors, (18440), 5332 states have internal predecessors, (18440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:46,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5333 states to 5333 states and 18440 transitions. [2021-07-09 18:48:46,669 INFO L78 Accepts]: Start accepts. Automaton has 5333 states and 18440 transitions. Word has length 39 [2021-07-09 18:48:46,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:46,669 INFO L482 AbstractCegarLoop]: Abstraction has 5333 states and 18440 transitions. [2021-07-09 18:48:46,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5333 states and 18440 transitions. [2021-07-09 18:48:46,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:46,676 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:46,676 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:46,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-07-09 18:48:46,677 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:46,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:46,677 INFO L82 PathProgramCache]: Analyzing trace with hash -107661224, now seen corresponding path program 88 times [2021-07-09 18:48:46,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:46,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420976348] [2021-07-09 18:48:46,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:46,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:46,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420976348] [2021-07-09 18:48:46,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420976348] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:46,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:46,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:48:46,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637073219] [2021-07-09 18:48:46,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:48:46,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:46,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:48:46,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:48:46,853 INFO L87 Difference]: Start difference. First operand 5333 states and 18440 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:50,083 INFO L93 Difference]: Finished difference Result 9823 states and 33613 transitions. [2021-07-09 18:48:50,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-07-09 18:48:50,084 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:50,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:50,105 INFO L225 Difference]: With dead ends: 9823 [2021-07-09 18:48:50,105 INFO L226 Difference]: Without dead ends: 9780 [2021-07-09 18:48:50,106 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3371 ImplicationChecksByTransitivity, 2086.5ms TimeCoverageRelationStatistics Valid=783, Invalid=9317, Unknown=0, NotChecked=0, Total=10100 [2021-07-09 18:48:50,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9780 states. [2021-07-09 18:48:50,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9780 to 5345. [2021-07-09 18:48:50,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5345 states, 5344 states have (on average 3.456961077844311) internal successors, (18474), 5344 states have internal predecessors, (18474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5345 states to 5345 states and 18474 transitions. [2021-07-09 18:48:50,222 INFO L78 Accepts]: Start accepts. Automaton has 5345 states and 18474 transitions. Word has length 39 [2021-07-09 18:48:50,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:50,222 INFO L482 AbstractCegarLoop]: Abstraction has 5345 states and 18474 transitions. [2021-07-09 18:48:50,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 5345 states and 18474 transitions. [2021-07-09 18:48:50,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:50,231 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:50,231 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:50,231 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-07-09 18:48:50,231 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:50,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:50,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1888259526, now seen corresponding path program 89 times [2021-07-09 18:48:50,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:50,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221872739] [2021-07-09 18:48:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:50,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:50,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:50,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221872739] [2021-07-09 18:48:50,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221872739] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:50,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:50,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:48:50,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846503327] [2021-07-09 18:48:50,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:48:50,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:50,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:48:50,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:48:50,421 INFO L87 Difference]: Start difference. First operand 5345 states and 18474 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:54,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:54,368 INFO L93 Difference]: Finished difference Result 10921 states and 37303 transitions. [2021-07-09 18:48:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-07-09 18:48:54,368 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:54,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:54,393 INFO L225 Difference]: With dead ends: 10921 [2021-07-09 18:48:54,393 INFO L226 Difference]: Without dead ends: 10869 [2021-07-09 18:48:54,394 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4056 ImplicationChecksByTransitivity, 2529.3ms TimeCoverageRelationStatistics Valid=848, Invalid=10924, Unknown=0, NotChecked=0, Total=11772 [2021-07-09 18:48:54,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10869 states. [2021-07-09 18:48:54,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10869 to 5333. [2021-07-09 18:48:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5333 states, 5332 states have (on average 3.458364591147787) internal successors, (18440), 5332 states have internal predecessors, (18440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5333 states to 5333 states and 18440 transitions. [2021-07-09 18:48:54,523 INFO L78 Accepts]: Start accepts. Automaton has 5333 states and 18440 transitions. Word has length 39 [2021-07-09 18:48:54,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:54,524 INFO L482 AbstractCegarLoop]: Abstraction has 5333 states and 18440 transitions. [2021-07-09 18:48:54,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5333 states and 18440 transitions. [2021-07-09 18:48:54,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:54,532 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:54,532 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:54,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-07-09 18:48:54,532 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:54,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:54,532 INFO L82 PathProgramCache]: Analyzing trace with hash 810822346, now seen corresponding path program 90 times [2021-07-09 18:48:54,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:54,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322276882] [2021-07-09 18:48:54,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:54,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:54,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322276882] [2021-07-09 18:48:54,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322276882] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:54,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:54,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:48:54,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810347751] [2021-07-09 18:48:54,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:48:54,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:54,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:48:54,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:48:54,747 INFO L87 Difference]: Start difference. First operand 5333 states and 18440 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:57,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:48:57,213 INFO L93 Difference]: Finished difference Result 9138 states and 31246 transitions. [2021-07-09 18:48:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-07-09 18:48:57,213 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:48:57,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:48:57,233 INFO L225 Difference]: With dead ends: 9138 [2021-07-09 18:48:57,234 INFO L226 Difference]: Without dead ends: 9083 [2021-07-09 18:48:57,234 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1596 ImplicationChecksByTransitivity, 1430.2ms TimeCoverageRelationStatistics Valid=475, Invalid=5075, Unknown=0, NotChecked=0, Total=5550 [2021-07-09 18:48:57,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9083 states. [2021-07-09 18:48:57,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9083 to 5335. [2021-07-09 18:48:57,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5335 states, 5334 states have (on average 3.4576302962129732) internal successors, (18443), 5334 states have internal predecessors, (18443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:57,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5335 states to 5335 states and 18443 transitions. [2021-07-09 18:48:57,384 INFO L78 Accepts]: Start accepts. Automaton has 5335 states and 18443 transitions. Word has length 39 [2021-07-09 18:48:57,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:48:57,384 INFO L482 AbstractCegarLoop]: Abstraction has 5335 states and 18443 transitions. [2021-07-09 18:48:57,384 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:48:57,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5335 states and 18443 transitions. [2021-07-09 18:48:57,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:48:57,392 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:48:57,392 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:48:57,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-07-09 18:48:57,393 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:48:57,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:48:57,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1983474568, now seen corresponding path program 91 times [2021-07-09 18:48:57,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:48:57,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649178810] [2021-07-09 18:48:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:48:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:48:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:48:57,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:48:57,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649178810] [2021-07-09 18:48:57,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649178810] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:48:57,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:48:57,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:48:57,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330045994] [2021-07-09 18:48:57,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:48:57,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:48:57,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:48:57,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:48:57,625 INFO L87 Difference]: Start difference. First operand 5335 states and 18443 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:00,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:49:00,529 INFO L93 Difference]: Finished difference Result 10291 states and 35128 transitions. [2021-07-09 18:49:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-09 18:49:00,529 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:49:00,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:49:00,551 INFO L225 Difference]: With dead ends: 10291 [2021-07-09 18:49:00,551 INFO L226 Difference]: Without dead ends: 10165 [2021-07-09 18:49:00,552 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2128 ImplicationChecksByTransitivity, 1635.1ms TimeCoverageRelationStatistics Valid=553, Invalid=6419, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 18:49:00,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10165 states. [2021-07-09 18:49:00,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10165 to 5415. [2021-07-09 18:49:00,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5415 states, 5414 states have (on average 3.4599187292205396) internal successors, (18732), 5414 states have internal predecessors, (18732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5415 states to 5415 states and 18732 transitions. [2021-07-09 18:49:00,669 INFO L78 Accepts]: Start accepts. Automaton has 5415 states and 18732 transitions. Word has length 39 [2021-07-09 18:49:00,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:49:00,670 INFO L482 AbstractCegarLoop]: Abstraction has 5415 states and 18732 transitions. [2021-07-09 18:49:00,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5415 states and 18732 transitions. [2021-07-09 18:49:00,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:49:00,677 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:49:00,677 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:49:00,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-07-09 18:49:00,677 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:49:00,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:49:00,678 INFO L82 PathProgramCache]: Analyzing trace with hash -69444406, now seen corresponding path program 92 times [2021-07-09 18:49:00,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:49:00,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980175049] [2021-07-09 18:49:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:49:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:49:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:49:00,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:49:00,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980175049] [2021-07-09 18:49:00,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980175049] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:49:00,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:49:00,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:49:00,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401386243] [2021-07-09 18:49:00,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:49:00,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:49:00,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:49:00,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:49:00,882 INFO L87 Difference]: Start difference. First operand 5415 states and 18732 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:06,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:49:06,730 INFO L93 Difference]: Finished difference Result 12683 states and 43069 transitions. [2021-07-09 18:49:06,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2021-07-09 18:49:06,730 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:49:06,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:49:06,788 INFO L225 Difference]: With dead ends: 12683 [2021-07-09 18:49:06,788 INFO L226 Difference]: Without dead ends: 12546 [2021-07-09 18:49:06,788 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7828 ImplicationChecksByTransitivity, 3360.4ms TimeCoverageRelationStatistics Valid=1236, Invalid=19644, Unknown=0, NotChecked=0, Total=20880 [2021-07-09 18:49:06,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12546 states. [2021-07-09 18:49:06,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12546 to 5427. [2021-07-09 18:49:06,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5427 states, 5426 states have (on average 3.4600073719130116) internal successors, (18774), 5426 states have internal predecessors, (18774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:06,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5427 states to 5427 states and 18774 transitions. [2021-07-09 18:49:06,919 INFO L78 Accepts]: Start accepts. Automaton has 5427 states and 18774 transitions. Word has length 39 [2021-07-09 18:49:06,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:49:06,919 INFO L482 AbstractCegarLoop]: Abstraction has 5427 states and 18774 transitions. [2021-07-09 18:49:06,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:06,919 INFO L276 IsEmpty]: Start isEmpty. Operand 5427 states and 18774 transitions. [2021-07-09 18:49:06,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:49:06,928 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:49:06,928 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:49:06,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-07-09 18:49:06,928 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:49:06,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:49:06,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1564335306, now seen corresponding path program 93 times [2021-07-09 18:49:06,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:49:06,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915523643] [2021-07-09 18:49:06,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:49:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:49:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:49:07,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:49:07,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915523643] [2021-07-09 18:49:07,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915523643] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:49:07,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:49:07,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:49:07,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138140921] [2021-07-09 18:49:07,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:49:07,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:49:07,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:49:07,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:49:07,110 INFO L87 Difference]: Start difference. First operand 5427 states and 18774 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:10,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:49:10,265 INFO L93 Difference]: Finished difference Result 9928 states and 33931 transitions. [2021-07-09 18:49:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-07-09 18:49:10,266 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:49:10,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:49:10,288 INFO L225 Difference]: With dead ends: 9928 [2021-07-09 18:49:10,288 INFO L226 Difference]: Without dead ends: 9864 [2021-07-09 18:49:10,289 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3135 ImplicationChecksByTransitivity, 2008.8ms TimeCoverageRelationStatistics Valid=733, Invalid=8773, Unknown=0, NotChecked=0, Total=9506 [2021-07-09 18:49:10,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9864 states. [2021-07-09 18:49:10,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9864 to 5419. [2021-07-09 18:49:10,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5419 states, 5418 states have (on average 3.4599483204134365) internal successors, (18746), 5418 states have internal predecessors, (18746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 18746 transitions. [2021-07-09 18:49:10,430 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 18746 transitions. Word has length 39 [2021-07-09 18:49:10,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:49:10,430 INFO L482 AbstractCegarLoop]: Abstraction has 5419 states and 18746 transitions. [2021-07-09 18:49:10,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:10,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 18746 transitions. [2021-07-09 18:49:10,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:49:10,438 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:49:10,438 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:49:10,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-07-09 18:49:10,439 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:49:10,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:49:10,439 INFO L82 PathProgramCache]: Analyzing trace with hash -645851736, now seen corresponding path program 94 times [2021-07-09 18:49:10,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:49:10,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857825535] [2021-07-09 18:49:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:49:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:49:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:49:10,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:49:10,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857825535] [2021-07-09 18:49:10,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857825535] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:49:10,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:49:10,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:49:10,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079435625] [2021-07-09 18:49:10,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:49:10,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:49:10,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:49:10,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:49:10,617 INFO L87 Difference]: Start difference. First operand 5419 states and 18746 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:12,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:49:12,847 INFO L93 Difference]: Finished difference Result 9190 states and 31423 transitions. [2021-07-09 18:49:12,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-07-09 18:49:12,847 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:49:12,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:49:12,868 INFO L225 Difference]: With dead ends: 9190 [2021-07-09 18:49:12,868 INFO L226 Difference]: Without dead ends: 9135 [2021-07-09 18:49:12,869 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 1219.2ms TimeCoverageRelationStatistics Valid=430, Invalid=4682, Unknown=0, NotChecked=0, Total=5112 [2021-07-09 18:49:12,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9135 states. [2021-07-09 18:49:12,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9135 to 5425. [2021-07-09 18:49:12,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5425 states, 5424 states have (on average 3.458517699115044) internal successors, (18759), 5424 states have internal predecessors, (18759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5425 states to 5425 states and 18759 transitions. [2021-07-09 18:49:12,990 INFO L78 Accepts]: Start accepts. Automaton has 5425 states and 18759 transitions. Word has length 39 [2021-07-09 18:49:12,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:49:12,990 INFO L482 AbstractCegarLoop]: Abstraction has 5425 states and 18759 transitions. [2021-07-09 18:49:12,990 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:12,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5425 states and 18759 transitions. [2021-07-09 18:49:12,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:49:12,998 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:49:12,998 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:49:12,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-07-09 18:49:12,998 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:49:12,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:49:12,999 INFO L82 PathProgramCache]: Analyzing trace with hash 526800486, now seen corresponding path program 95 times [2021-07-09 18:49:12,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:49:12,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489552985] [2021-07-09 18:49:12,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:49:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:49:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:49:13,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:49:13,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489552985] [2021-07-09 18:49:13,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489552985] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:49:13,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:49:13,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:49:13,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621336856] [2021-07-09 18:49:13,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:49:13,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:49:13,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:49:13,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:49:13,177 INFO L87 Difference]: Start difference. First operand 5425 states and 18759 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:16,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:49:16,035 INFO L93 Difference]: Finished difference Result 10376 states and 35342 transitions. [2021-07-09 18:49:16,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-07-09 18:49:16,036 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:49:16,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:49:16,059 INFO L225 Difference]: With dead ends: 10376 [2021-07-09 18:49:16,059 INFO L226 Difference]: Without dead ends: 10316 [2021-07-09 18:49:16,059 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2259 ImplicationChecksByTransitivity, 1616.3ms TimeCoverageRelationStatistics Valid=568, Invalid=6742, Unknown=0, NotChecked=0, Total=7310 [2021-07-09 18:49:16,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10316 states. [2021-07-09 18:49:16,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10316 to 5423. [2021-07-09 18:49:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5423 states, 5422 states have (on average 3.4588712652157874) internal successors, (18754), 5422 states have internal predecessors, (18754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5423 states to 5423 states and 18754 transitions. [2021-07-09 18:49:16,187 INFO L78 Accepts]: Start accepts. Automaton has 5423 states and 18754 transitions. Word has length 39 [2021-07-09 18:49:16,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:49:16,187 INFO L482 AbstractCegarLoop]: Abstraction has 5423 states and 18754 transitions. [2021-07-09 18:49:16,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:16,187 INFO L276 IsEmpty]: Start isEmpty. Operand 5423 states and 18754 transitions. [2021-07-09 18:49:16,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:49:16,195 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:49:16,195 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:49:16,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-07-09 18:49:16,196 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:49:16,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:49:16,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1552766056, now seen corresponding path program 96 times [2021-07-09 18:49:16,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:49:16,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574661456] [2021-07-09 18:49:16,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:49:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:49:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:49:16,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:49:16,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574661456] [2021-07-09 18:49:16,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574661456] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:49:16,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:49:16,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:49:16,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075741832] [2021-07-09 18:49:16,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:49:16,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:49:16,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:49:16,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:49:16,367 INFO L87 Difference]: Start difference. First operand 5423 states and 18754 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:18,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:49:18,806 INFO L93 Difference]: Finished difference Result 10137 states and 34744 transitions. [2021-07-09 18:49:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-07-09 18:49:18,806 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:49:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:49:18,829 INFO L225 Difference]: With dead ends: 10137 [2021-07-09 18:49:18,829 INFO L226 Difference]: Without dead ends: 10061 [2021-07-09 18:49:18,830 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1706 ImplicationChecksByTransitivity, 1321.3ms TimeCoverageRelationStatistics Valid=464, Invalid=5236, Unknown=0, NotChecked=0, Total=5700 [2021-07-09 18:49:18,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10061 states. [2021-07-09 18:49:18,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10061 to 5431. [2021-07-09 18:49:18,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5431 states, 5430 states have (on average 3.4567219152854514) internal successors, (18770), 5430 states have internal predecessors, (18770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5431 states to 5431 states and 18770 transitions. [2021-07-09 18:49:18,960 INFO L78 Accepts]: Start accepts. Automaton has 5431 states and 18770 transitions. Word has length 39 [2021-07-09 18:49:18,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:49:18,960 INFO L482 AbstractCegarLoop]: Abstraction has 5431 states and 18770 transitions. [2021-07-09 18:49:18,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:18,961 INFO L276 IsEmpty]: Start isEmpty. Operand 5431 states and 18770 transitions. [2021-07-09 18:49:18,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:49:18,969 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:49:18,969 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:49:18,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-07-09 18:49:18,969 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:49:18,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:49:18,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1724147628, now seen corresponding path program 97 times [2021-07-09 18:49:18,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:49:18,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928658145] [2021-07-09 18:49:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:49:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:49:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:49:19,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:49:19,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928658145] [2021-07-09 18:49:19,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928658145] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:49:19,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:49:19,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:49:19,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694974230] [2021-07-09 18:49:19,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:49:19,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:49:19,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:49:19,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:49:19,174 INFO L87 Difference]: Start difference. First operand 5431 states and 18770 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:21,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:49:21,925 INFO L93 Difference]: Finished difference Result 10263 states and 35075 transitions. [2021-07-09 18:49:21,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-07-09 18:49:21,925 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:49:21,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:49:21,948 INFO L225 Difference]: With dead ends: 10263 [2021-07-09 18:49:21,948 INFO L226 Difference]: Without dead ends: 10177 [2021-07-09 18:49:21,949 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2063 ImplicationChecksByTransitivity, 1568.7ms TimeCoverageRelationStatistics Valid=540, Invalid=6266, Unknown=0, NotChecked=0, Total=6806 [2021-07-09 18:49:21,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10177 states. [2021-07-09 18:49:22,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10177 to 5411. [2021-07-09 18:49:22,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5411 states, 5410 states have (on average 3.4598890942698706) internal successors, (18718), 5410 states have internal predecessors, (18718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:22,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5411 states to 5411 states and 18718 transitions. [2021-07-09 18:49:22,075 INFO L78 Accepts]: Start accepts. Automaton has 5411 states and 18718 transitions. Word has length 39 [2021-07-09 18:49:22,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:49:22,075 INFO L482 AbstractCegarLoop]: Abstraction has 5411 states and 18718 transitions. [2021-07-09 18:49:22,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:22,075 INFO L276 IsEmpty]: Start isEmpty. Operand 5411 states and 18718 transitions. [2021-07-09 18:49:22,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:49:22,083 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:49:22,083 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:49:22,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-07-09 18:49:22,083 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:49:22,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:49:22,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1829471118, now seen corresponding path program 98 times [2021-07-09 18:49:22,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:49:22,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708326042] [2021-07-09 18:49:22,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:49:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:49:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:49:22,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:49:22,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708326042] [2021-07-09 18:49:22,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708326042] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:49:22,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:49:22,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:49:22,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257717001] [2021-07-09 18:49:22,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:49:22,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:49:22,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:49:22,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:49:22,247 INFO L87 Difference]: Start difference. First operand 5411 states and 18718 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:25,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:49:25,831 INFO L93 Difference]: Finished difference Result 10604 states and 36407 transitions. [2021-07-09 18:49:25,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-07-09 18:49:25,831 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:49:25,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:49:25,855 INFO L225 Difference]: With dead ends: 10604 [2021-07-09 18:49:25,855 INFO L226 Difference]: Without dead ends: 10460 [2021-07-09 18:49:25,856 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3017 ImplicationChecksByTransitivity, 1959.8ms TimeCoverageRelationStatistics Valid=690, Invalid=8430, Unknown=0, NotChecked=0, Total=9120 [2021-07-09 18:49:25,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10460 states. [2021-07-09 18:49:25,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10460 to 5619. [2021-07-09 18:49:25,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5619 states, 5618 states have (on average 3.450694197223211) internal successors, (19386), 5618 states have internal predecessors, (19386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5619 states to 5619 states and 19386 transitions. [2021-07-09 18:49:25,988 INFO L78 Accepts]: Start accepts. Automaton has 5619 states and 19386 transitions. Word has length 39 [2021-07-09 18:49:25,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:49:25,988 INFO L482 AbstractCegarLoop]: Abstraction has 5619 states and 19386 transitions. [2021-07-09 18:49:25,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5619 states and 19386 transitions. [2021-07-09 18:49:25,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:49:25,997 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:49:25,997 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:49:25,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-07-09 18:49:25,998 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:49:25,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:49:25,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1022604884, now seen corresponding path program 99 times [2021-07-09 18:49:25,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:49:25,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929478739] [2021-07-09 18:49:25,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:49:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:49:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:49:26,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:49:26,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929478739] [2021-07-09 18:49:26,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929478739] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:49:26,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:49:26,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:49:26,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303076505] [2021-07-09 18:49:26,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:49:26,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:49:26,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:49:26,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:49:26,170 INFO L87 Difference]: Start difference. First operand 5619 states and 19386 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:31,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:49:31,057 INFO L93 Difference]: Finished difference Result 12549 states and 42583 transitions. [2021-07-09 18:49:31,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-07-09 18:49:31,057 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:49:31,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:49:31,087 INFO L225 Difference]: With dead ends: 12549 [2021-07-09 18:49:31,087 INFO L226 Difference]: Without dead ends: 12413 [2021-07-09 18:49:31,088 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5893 ImplicationChecksByTransitivity, 2960.0ms TimeCoverageRelationStatistics Valid=1103, Invalid=14899, Unknown=0, NotChecked=0, Total=16002 [2021-07-09 18:49:31,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12413 states. [2021-07-09 18:49:31,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12413 to 5767. [2021-07-09 18:49:31,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 5766 states have (on average 3.448664585501214) internal successors, (19885), 5766 states have internal predecessors, (19885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:31,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 19885 transitions. [2021-07-09 18:49:31,235 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 19885 transitions. Word has length 39 [2021-07-09 18:49:31,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:49:31,236 INFO L482 AbstractCegarLoop]: Abstraction has 5767 states and 19885 transitions. [2021-07-09 18:49:31,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:31,236 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 19885 transitions. [2021-07-09 18:49:31,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:49:31,245 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:49:31,245 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:49:31,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-07-09 18:49:31,245 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:49:31,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:49:31,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1491764110, now seen corresponding path program 100 times [2021-07-09 18:49:31,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:49:31,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529382975] [2021-07-09 18:49:31,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:49:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:49:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:49:31,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:49:31,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529382975] [2021-07-09 18:49:31,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529382975] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:49:31,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:49:31,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:49:31,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454370713] [2021-07-09 18:49:31,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:49:31,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:49:31,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:49:31,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:49:31,415 INFO L87 Difference]: Start difference. First operand 5767 states and 19885 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:36,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:49:36,530 INFO L93 Difference]: Finished difference Result 12984 states and 44180 transitions. [2021-07-09 18:49:36,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-07-09 18:49:36,531 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:49:36,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:49:36,561 INFO L225 Difference]: With dead ends: 12984 [2021-07-09 18:49:36,561 INFO L226 Difference]: Without dead ends: 12815 [2021-07-09 18:49:36,562 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6319 ImplicationChecksByTransitivity, 3081.8ms TimeCoverageRelationStatistics Valid=1152, Invalid=15878, Unknown=0, NotChecked=0, Total=17030 [2021-07-09 18:49:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12815 states. [2021-07-09 18:49:36,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12815 to 5851. [2021-07-09 18:49:36,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5851 states, 5850 states have (on average 3.4483760683760685) internal successors, (20173), 5850 states have internal predecessors, (20173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 20173 transitions. [2021-07-09 18:49:36,713 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 20173 transitions. Word has length 39 [2021-07-09 18:49:36,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:49:36,713 INFO L482 AbstractCegarLoop]: Abstraction has 5851 states and 20173 transitions. [2021-07-09 18:49:36,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 20173 transitions. [2021-07-09 18:49:36,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:49:36,723 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:49:36,723 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:49:36,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-07-09 18:49:36,723 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:49:36,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:49:36,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1082948494, now seen corresponding path program 101 times [2021-07-09 18:49:36,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:49:36,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548999203] [2021-07-09 18:49:36,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:49:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:49:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:49:36,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:49:36,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548999203] [2021-07-09 18:49:36,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548999203] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:49:36,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:49:36,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:49:36,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712677864] [2021-07-09 18:49:36,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:49:36,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:49:36,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:49:36,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:49:36,887 INFO L87 Difference]: Start difference. First operand 5851 states and 20173 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:49:42,468 INFO L93 Difference]: Finished difference Result 12513 states and 42749 transitions. [2021-07-09 18:49:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-07-09 18:49:42,468 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:49:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:49:42,496 INFO L225 Difference]: With dead ends: 12513 [2021-07-09 18:49:42,496 INFO L226 Difference]: Without dead ends: 12266 [2021-07-09 18:49:42,497 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6851 ImplicationChecksByTransitivity, 3204.3ms TimeCoverageRelationStatistics Valid=1151, Invalid=17209, Unknown=0, NotChecked=0, Total=18360 [2021-07-09 18:49:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12266 states. [2021-07-09 18:49:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12266 to 5419. [2021-07-09 18:49:42,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5419 states, 5418 states have (on average 3.4562569213732006) internal successors, (18726), 5418 states have internal predecessors, (18726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:42,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 18726 transitions. [2021-07-09 18:49:42,642 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 18726 transitions. Word has length 39 [2021-07-09 18:49:42,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:49:42,642 INFO L482 AbstractCegarLoop]: Abstraction has 5419 states and 18726 transitions. [2021-07-09 18:49:42,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 18726 transitions. [2021-07-09 18:49:42,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:49:42,651 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:49:42,651 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:49:42,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-07-09 18:49:42,651 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:49:42,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:49:42,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1554264236, now seen corresponding path program 102 times [2021-07-09 18:49:42,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:49:42,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295014862] [2021-07-09 18:49:42,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:49:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:49:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:49:42,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:49:42,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295014862] [2021-07-09 18:49:42,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295014862] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:49:42,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:49:42,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:49:42,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120956966] [2021-07-09 18:49:42,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:49:42,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:49:42,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:49:42,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:49:42,834 INFO L87 Difference]: Start difference. First operand 5419 states and 18726 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:46,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:49:46,743 INFO L93 Difference]: Finished difference Result 10652 states and 36464 transitions. [2021-07-09 18:49:46,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-07-09 18:49:46,743 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:49:46,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:49:46,766 INFO L225 Difference]: With dead ends: 10652 [2021-07-09 18:49:46,766 INFO L226 Difference]: Without dead ends: 10585 [2021-07-09 18:49:46,767 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3584 ImplicationChecksByTransitivity, 2133.5ms TimeCoverageRelationStatistics Valid=755, Invalid=9957, Unknown=0, NotChecked=0, Total=10712 [2021-07-09 18:49:46,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10585 states. [2021-07-09 18:49:46,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10585 to 5437. [2021-07-09 18:49:46,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5436 states have (on average 3.4536423841059603) internal successors, (18774), 5436 states have internal predecessors, (18774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:46,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 18774 transitions. [2021-07-09 18:49:46,886 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 18774 transitions. Word has length 39 [2021-07-09 18:49:46,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:49:46,886 INFO L482 AbstractCegarLoop]: Abstraction has 5437 states and 18774 transitions. [2021-07-09 18:49:46,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:46,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 18774 transitions. [2021-07-09 18:49:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:49:46,894 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:49:46,894 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:49:46,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-07-09 18:49:46,894 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:49:46,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:49:46,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1297811766, now seen corresponding path program 103 times [2021-07-09 18:49:46,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:49:46,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314405802] [2021-07-09 18:49:46,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:49:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:49:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:49:47,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:49:47,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314405802] [2021-07-09 18:49:47,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314405802] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:49:47,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:49:47,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:49:47,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237890043] [2021-07-09 18:49:47,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:49:47,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:49:47,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:49:47,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:49:47,100 INFO L87 Difference]: Start difference. First operand 5437 states and 18774 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:52,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:49:52,301 INFO L93 Difference]: Finished difference Result 12169 states and 41355 transitions. [2021-07-09 18:49:52,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2021-07-09 18:49:52,301 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:49:52,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:49:52,330 INFO L225 Difference]: With dead ends: 12169 [2021-07-09 18:49:52,330 INFO L226 Difference]: Without dead ends: 12126 [2021-07-09 18:49:52,331 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6673 ImplicationChecksByTransitivity, 3183.1ms TimeCoverageRelationStatistics Valid=1175, Invalid=16915, Unknown=0, NotChecked=0, Total=18090 [2021-07-09 18:49:52,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12126 states. [2021-07-09 18:49:52,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12126 to 5461. [2021-07-09 18:49:52,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5461 states, 5460 states have (on average 3.451831501831502) internal successors, (18847), 5460 states have internal predecessors, (18847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5461 states to 5461 states and 18847 transitions. [2021-07-09 18:49:52,490 INFO L78 Accepts]: Start accepts. Automaton has 5461 states and 18847 transitions. Word has length 39 [2021-07-09 18:49:52,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:49:52,490 INFO L482 AbstractCegarLoop]: Abstraction has 5461 states and 18847 transitions. [2021-07-09 18:49:52,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:52,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5461 states and 18847 transitions. [2021-07-09 18:49:52,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:49:52,528 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:49:52,528 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:49:52,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-07-09 18:49:52,528 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:49:52,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:49:52,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1216557228, now seen corresponding path program 104 times [2021-07-09 18:49:52,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:49:52,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117611670] [2021-07-09 18:49:52,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:49:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:49:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:49:52,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:49:52,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117611670] [2021-07-09 18:49:52,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117611670] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:49:52,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:49:52,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:49:52,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551553946] [2021-07-09 18:49:52,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:49:52,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:49:52,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:49:52,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:49:52,713 INFO L87 Difference]: Start difference. First operand 5461 states and 18847 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:58,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:49:58,066 INFO L93 Difference]: Finished difference Result 12677 states and 43230 transitions. [2021-07-09 18:49:58,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2021-07-09 18:49:58,066 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:49:58,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:49:58,093 INFO L225 Difference]: With dead ends: 12677 [2021-07-09 18:49:58,093 INFO L226 Difference]: Without dead ends: 12601 [2021-07-09 18:49:58,094 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6890 ImplicationChecksByTransitivity, 3223.7ms TimeCoverageRelationStatistics Valid=1205, Invalid=17427, Unknown=0, NotChecked=0, Total=18632 [2021-07-09 18:49:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-07-09 18:49:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 5431. [2021-07-09 18:49:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5431 states, 5430 states have (on average 3.4556169429097605) internal successors, (18764), 5430 states have internal predecessors, (18764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:58,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5431 states to 5431 states and 18764 transitions. [2021-07-09 18:49:58,245 INFO L78 Accepts]: Start accepts. Automaton has 5431 states and 18764 transitions. Word has length 39 [2021-07-09 18:49:58,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:49:58,245 INFO L482 AbstractCegarLoop]: Abstraction has 5431 states and 18764 transitions. [2021-07-09 18:49:58,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:49:58,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5431 states and 18764 transitions. [2021-07-09 18:49:58,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:49:58,252 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:49:58,252 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:49:58,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-07-09 18:49:58,252 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:49:58,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:49:58,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1563134030, now seen corresponding path program 105 times [2021-07-09 18:49:58,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:49:58,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322402508] [2021-07-09 18:49:58,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:49:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:49:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:49:58,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:49:58,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322402508] [2021-07-09 18:49:58,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322402508] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:49:58,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:49:58,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:49:58,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346977534] [2021-07-09 18:49:58,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:49:58,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:49:58,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:49:58,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:49:58,430 INFO L87 Difference]: Start difference. First operand 5431 states and 18764 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:00,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:00,811 INFO L93 Difference]: Finished difference Result 9270 states and 32084 transitions. [2021-07-09 18:50:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-09 18:50:00,811 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:00,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:00,832 INFO L225 Difference]: With dead ends: 9270 [2021-07-09 18:50:00,833 INFO L226 Difference]: Without dead ends: 9203 [2021-07-09 18:50:00,833 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1424 ImplicationChecksByTransitivity, 1199.9ms TimeCoverageRelationStatistics Valid=418, Invalid=4694, Unknown=0, NotChecked=0, Total=5112 [2021-07-09 18:50:00,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9203 states. [2021-07-09 18:50:00,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9203 to 5449. [2021-07-09 18:50:00,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5449 states, 5448 states have (on average 3.4519089574155655) internal successors, (18806), 5448 states have internal predecessors, (18806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:00,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 18806 transitions. [2021-07-09 18:50:00,961 INFO L78 Accepts]: Start accepts. Automaton has 5449 states and 18806 transitions. Word has length 39 [2021-07-09 18:50:00,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:00,961 INFO L482 AbstractCegarLoop]: Abstraction has 5449 states and 18806 transitions. [2021-07-09 18:50:00,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:00,961 INFO L276 IsEmpty]: Start isEmpty. Operand 5449 states and 18806 transitions. [2021-07-09 18:50:00,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:00,969 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:00,969 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:00,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-07-09 18:50:00,970 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:00,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:00,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1461759922, now seen corresponding path program 106 times [2021-07-09 18:50:00,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:00,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840619101] [2021-07-09 18:50:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:01,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:01,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840619101] [2021-07-09 18:50:01,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840619101] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:01,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:01,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:01,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534585665] [2021-07-09 18:50:01,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:01,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:01,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:01,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:01,150 INFO L87 Difference]: Start difference. First operand 5449 states and 18806 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:03,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:03,284 INFO L93 Difference]: Finished difference Result 8819 states and 30408 transitions. [2021-07-09 18:50:03,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-07-09 18:50:03,285 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:03,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:03,306 INFO L225 Difference]: With dead ends: 8819 [2021-07-09 18:50:03,306 INFO L226 Difference]: Without dead ends: 8744 [2021-07-09 18:50:03,307 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 1146.4ms TimeCoverageRelationStatistics Valid=395, Invalid=4297, Unknown=0, NotChecked=0, Total=4692 [2021-07-09 18:50:03,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8744 states. [2021-07-09 18:50:03,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8744 to 5437. [2021-07-09 18:50:03,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5436 states have (on average 3.4536423841059603) internal successors, (18774), 5436 states have internal predecessors, (18774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:03,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 18774 transitions. [2021-07-09 18:50:03,473 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 18774 transitions. Word has length 39 [2021-07-09 18:50:03,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:03,473 INFO L482 AbstractCegarLoop]: Abstraction has 5437 states and 18774 transitions. [2021-07-09 18:50:03,473 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:03,473 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 18774 transitions. [2021-07-09 18:50:03,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:03,481 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:03,481 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:03,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-07-09 18:50:03,481 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:03,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:03,481 INFO L82 PathProgramCache]: Analyzing trace with hash -580243766, now seen corresponding path program 107 times [2021-07-09 18:50:03,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:03,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983808271] [2021-07-09 18:50:03,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:03,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:03,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983808271] [2021-07-09 18:50:03,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983808271] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:03,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:03,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:03,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302507274] [2021-07-09 18:50:03,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:03,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:03,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:03,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:03,660 INFO L87 Difference]: Start difference. First operand 5437 states and 18774 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:06,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:06,848 INFO L93 Difference]: Finished difference Result 9692 states and 33271 transitions. [2021-07-09 18:50:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-07-09 18:50:06,848 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:06,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:06,871 INFO L225 Difference]: With dead ends: 9692 [2021-07-09 18:50:06,871 INFO L226 Difference]: Without dead ends: 9649 [2021-07-09 18:50:06,872 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3136 ImplicationChecksByTransitivity, 1988.3ms TimeCoverageRelationStatistics Valid=717, Invalid=8789, Unknown=0, NotChecked=0, Total=9506 [2021-07-09 18:50:06,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9649 states. [2021-07-09 18:50:06,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9649 to 5452. [2021-07-09 18:50:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5452 states, 5451 states have (on average 3.4525775087139974) internal successors, (18820), 5451 states have internal predecessors, (18820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:07,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5452 states to 5452 states and 18820 transitions. [2021-07-09 18:50:07,004 INFO L78 Accepts]: Start accepts. Automaton has 5452 states and 18820 transitions. Word has length 39 [2021-07-09 18:50:07,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:07,004 INFO L482 AbstractCegarLoop]: Abstraction has 5452 states and 18820 transitions. [2021-07-09 18:50:07,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand 5452 states and 18820 transitions. [2021-07-09 18:50:07,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:07,013 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:07,013 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:07,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-07-09 18:50:07,013 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:07,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:07,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1934125228, now seen corresponding path program 108 times [2021-07-09 18:50:07,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:07,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661486942] [2021-07-09 18:50:07,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:07,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:07,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661486942] [2021-07-09 18:50:07,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661486942] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:07,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:07,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:07,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970294294] [2021-07-09 18:50:07,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:07,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:07,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:07,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:07,218 INFO L87 Difference]: Start difference. First operand 5452 states and 18820 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:10,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:10,782 INFO L93 Difference]: Finished difference Result 10742 states and 36805 transitions. [2021-07-09 18:50:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-07-09 18:50:10,783 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:10,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:10,805 INFO L225 Difference]: With dead ends: 10742 [2021-07-09 18:50:10,805 INFO L226 Difference]: Without dead ends: 10690 [2021-07-09 18:50:10,806 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3797 ImplicationChecksByTransitivity, 2212.8ms TimeCoverageRelationStatistics Valid=782, Invalid=10348, Unknown=0, NotChecked=0, Total=11130 [2021-07-09 18:50:10,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10690 states. [2021-07-09 18:50:10,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10690 to 5446. [2021-07-09 18:50:10,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5446 states, 5445 states have (on average 3.453443526170799) internal successors, (18804), 5445 states have internal predecessors, (18804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:10,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5446 states to 5446 states and 18804 transitions. [2021-07-09 18:50:10,959 INFO L78 Accepts]: Start accepts. Automaton has 5446 states and 18804 transitions. Word has length 39 [2021-07-09 18:50:10,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:10,959 INFO L482 AbstractCegarLoop]: Abstraction has 5446 states and 18804 transitions. [2021-07-09 18:50:10,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:10,959 INFO L276 IsEmpty]: Start isEmpty. Operand 5446 states and 18804 transitions. [2021-07-09 18:50:10,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:10,966 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:10,967 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:10,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-07-09 18:50:10,967 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:10,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:10,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2117662996, now seen corresponding path program 109 times [2021-07-09 18:50:10,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:10,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098130655] [2021-07-09 18:50:10,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:11,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:11,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098130655] [2021-07-09 18:50:11,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098130655] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:11,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:11,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:11,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558211513] [2021-07-09 18:50:11,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:11,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:11,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:11,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:11,143 INFO L87 Difference]: Start difference. First operand 5446 states and 18804 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:13,324 INFO L93 Difference]: Finished difference Result 8972 states and 30755 transitions. [2021-07-09 18:50:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-07-09 18:50:13,324 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:13,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:13,342 INFO L225 Difference]: With dead ends: 8972 [2021-07-09 18:50:13,342 INFO L226 Difference]: Without dead ends: 8909 [2021-07-09 18:50:13,343 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 1210.0ms TimeCoverageRelationStatistics Valid=422, Invalid=4690, Unknown=0, NotChecked=0, Total=5112 [2021-07-09 18:50:13,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8909 states. [2021-07-09 18:50:13,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8909 to 5449. [2021-07-09 18:50:13,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5449 states, 5448 states have (on average 3.452459618208517) internal successors, (18809), 5448 states have internal predecessors, (18809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 18809 transitions. [2021-07-09 18:50:13,446 INFO L78 Accepts]: Start accepts. Automaton has 5449 states and 18809 transitions. Word has length 39 [2021-07-09 18:50:13,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:13,446 INFO L482 AbstractCegarLoop]: Abstraction has 5449 states and 18809 transitions. [2021-07-09 18:50:13,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:13,446 INFO L276 IsEmpty]: Start isEmpty. Operand 5449 states and 18809 transitions. [2021-07-09 18:50:13,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:13,454 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:13,454 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:13,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-07-09 18:50:13,454 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:13,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:13,454 INFO L82 PathProgramCache]: Analyzing trace with hash 249662542, now seen corresponding path program 110 times [2021-07-09 18:50:13,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:13,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353318971] [2021-07-09 18:50:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:13,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:13,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353318971] [2021-07-09 18:50:13,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353318971] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:13,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:13,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:13,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614353079] [2021-07-09 18:50:13,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:13,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:13,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:13,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:13,634 INFO L87 Difference]: Start difference. First operand 5449 states and 18809 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:16,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:16,278 INFO L93 Difference]: Finished difference Result 10049 states and 34391 transitions. [2021-07-09 18:50:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-07-09 18:50:16,278 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:16,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:16,300 INFO L225 Difference]: With dead ends: 10049 [2021-07-09 18:50:16,300 INFO L226 Difference]: Without dead ends: 9898 [2021-07-09 18:50:16,301 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 1437.8ms TimeCoverageRelationStatistics Valid=495, Invalid=5985, Unknown=0, NotChecked=0, Total=6480 [2021-07-09 18:50:16,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9898 states. [2021-07-09 18:50:16,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9898 to 5438. [2021-07-09 18:50:16,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5438 states, 5437 states have (on average 3.454662497700938) internal successors, (18783), 5437 states have internal predecessors, (18783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:16,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5438 states to 5438 states and 18783 transitions. [2021-07-09 18:50:16,429 INFO L78 Accepts]: Start accepts. Automaton has 5438 states and 18783 transitions. Word has length 39 [2021-07-09 18:50:16,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:16,429 INFO L482 AbstractCegarLoop]: Abstraction has 5438 states and 18783 transitions. [2021-07-09 18:50:16,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:16,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5438 states and 18783 transitions. [2021-07-09 18:50:16,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:16,437 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:16,437 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:16,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-07-09 18:50:16,437 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:16,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:16,437 INFO L82 PathProgramCache]: Analyzing trace with hash 667908174, now seen corresponding path program 111 times [2021-07-09 18:50:16,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:16,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817794550] [2021-07-09 18:50:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:16,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:16,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817794550] [2021-07-09 18:50:16,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817794550] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:16,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:16,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:16,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946055637] [2021-07-09 18:50:16,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:16,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:16,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:16,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:16,613 INFO L87 Difference]: Start difference. First operand 5438 states and 18783 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:22,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:22,511 INFO L93 Difference]: Finished difference Result 12395 states and 42218 transitions. [2021-07-09 18:50:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2021-07-09 18:50:22,511 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:22,536 INFO L225 Difference]: With dead ends: 12395 [2021-07-09 18:50:22,536 INFO L226 Difference]: Without dead ends: 12258 [2021-07-09 18:50:22,537 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7572 ImplicationChecksByTransitivity, 3364.0ms TimeCoverageRelationStatistics Valid=1206, Invalid=19100, Unknown=0, NotChecked=0, Total=20306 [2021-07-09 18:50:22,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12258 states. [2021-07-09 18:50:22,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12258 to 5444. [2021-07-09 18:50:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5444 states, 5443 states have (on average 3.4537938636781185) internal successors, (18799), 5443 states have internal predecessors, (18799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 18799 transitions. [2021-07-09 18:50:22,664 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 18799 transitions. Word has length 39 [2021-07-09 18:50:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:22,664 INFO L482 AbstractCegarLoop]: Abstraction has 5444 states and 18799 transitions. [2021-07-09 18:50:22,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 18799 transitions. [2021-07-09 18:50:22,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:22,671 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:22,671 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:22,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-07-09 18:50:22,671 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:22,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:22,672 INFO L82 PathProgramCache]: Analyzing trace with hash -73043924, now seen corresponding path program 112 times [2021-07-09 18:50:22,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:22,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298650809] [2021-07-09 18:50:22,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:22,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:22,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298650809] [2021-07-09 18:50:22,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298650809] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:22,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:22,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:22,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390270408] [2021-07-09 18:50:22,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:22,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:22,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:22,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:22,856 INFO L87 Difference]: Start difference. First operand 5444 states and 18799 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:25,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:25,890 INFO L93 Difference]: Finished difference Result 9713 states and 33303 transitions. [2021-07-09 18:50:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-07-09 18:50:25,890 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:25,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:25,911 INFO L225 Difference]: With dead ends: 9713 [2021-07-09 18:50:25,912 INFO L226 Difference]: Without dead ends: 9649 [2021-07-09 18:50:25,912 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2910 ImplicationChecksByTransitivity, 1868.6ms TimeCoverageRelationStatistics Valid=677, Invalid=8253, Unknown=0, NotChecked=0, Total=8930 [2021-07-09 18:50:25,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9649 states. [2021-07-09 18:50:26,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9649 to 5450. [2021-07-09 18:50:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5450 states, 5449 states have (on average 3.4529271425949717) internal successors, (18815), 5449 states have internal predecessors, (18815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:26,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 18815 transitions. [2021-07-09 18:50:26,020 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 18815 transitions. Word has length 39 [2021-07-09 18:50:26,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:26,020 INFO L482 AbstractCegarLoop]: Abstraction has 5450 states and 18815 transitions. [2021-07-09 18:50:26,020 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:26,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 18815 transitions. [2021-07-09 18:50:26,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:26,027 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:26,027 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:26,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-07-09 18:50:26,027 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:26,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:26,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1610463154, now seen corresponding path program 113 times [2021-07-09 18:50:26,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:26,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487963334] [2021-07-09 18:50:26,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:26,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:26,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:26,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487963334] [2021-07-09 18:50:26,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487963334] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:26,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:26,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:26,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530063822] [2021-07-09 18:50:26,203 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:26,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:26,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:26,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:26,203 INFO L87 Difference]: Start difference. First operand 5450 states and 18815 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:28,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:28,293 INFO L93 Difference]: Finished difference Result 9005 states and 30847 transitions. [2021-07-09 18:50:28,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-09 18:50:28,293 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:28,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:28,312 INFO L225 Difference]: With dead ends: 9005 [2021-07-09 18:50:28,313 INFO L226 Difference]: Without dead ends: 8942 [2021-07-09 18:50:28,313 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 1098.7ms TimeCoverageRelationStatistics Valid=387, Invalid=4305, Unknown=0, NotChecked=0, Total=4692 [2021-07-09 18:50:28,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8942 states. [2021-07-09 18:50:28,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8942 to 5459. [2021-07-09 18:50:28,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5459 states, 5458 states have (on average 3.451080982044705) internal successors, (18836), 5458 states have internal predecessors, (18836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:28,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5459 states to 5459 states and 18836 transitions. [2021-07-09 18:50:28,420 INFO L78 Accepts]: Start accepts. Automaton has 5459 states and 18836 transitions. Word has length 39 [2021-07-09 18:50:28,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:28,420 INFO L482 AbstractCegarLoop]: Abstraction has 5459 states and 18836 transitions. [2021-07-09 18:50:28,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:28,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5459 states and 18836 transitions. [2021-07-09 18:50:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:28,428 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:28,428 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:28,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-07-09 18:50:28,428 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:28,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:28,428 INFO L82 PathProgramCache]: Analyzing trace with hash 756862384, now seen corresponding path program 114 times [2021-07-09 18:50:28,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:28,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967283790] [2021-07-09 18:50:28,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:28,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:28,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:28,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967283790] [2021-07-09 18:50:28,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967283790] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:28,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:28,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:28,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396540690] [2021-07-09 18:50:28,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:28,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:28,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:28,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:28,604 INFO L87 Difference]: Start difference. First operand 5459 states and 18836 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:31,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:31,364 INFO L93 Difference]: Finished difference Result 10156 states and 34664 transitions. [2021-07-09 18:50:31,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-09 18:50:31,365 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:31,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:31,385 INFO L225 Difference]: With dead ends: 10156 [2021-07-09 18:50:31,386 INFO L226 Difference]: Without dead ends: 10086 [2021-07-09 18:50:31,386 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 1502.9ms TimeCoverageRelationStatistics Valid=515, Invalid=6291, Unknown=0, NotChecked=0, Total=6806 [2021-07-09 18:50:31,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10086 states. [2021-07-09 18:50:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10086 to 5456. [2021-07-09 18:50:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5456 states, 5455 states have (on average 3.451512373968836) internal successors, (18828), 5455 states have internal predecessors, (18828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:31,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5456 states to 5456 states and 18828 transitions. [2021-07-09 18:50:31,498 INFO L78 Accepts]: Start accepts. Automaton has 5456 states and 18828 transitions. Word has length 39 [2021-07-09 18:50:31,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:31,498 INFO L482 AbstractCegarLoop]: Abstraction has 5456 states and 18828 transitions. [2021-07-09 18:50:31,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:31,498 INFO L276 IsEmpty]: Start isEmpty. Operand 5456 states and 18828 transitions. [2021-07-09 18:50:31,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:31,506 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:31,506 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:31,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-07-09 18:50:31,506 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:31,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:31,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1258821816, now seen corresponding path program 115 times [2021-07-09 18:50:31,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:31,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566499082] [2021-07-09 18:50:31,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:31,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:31,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566499082] [2021-07-09 18:50:31,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566499082] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:31,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:31,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:50:31,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923860462] [2021-07-09 18:50:31,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:50:31,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:31,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:50:31,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:50:31,671 INFO L87 Difference]: Start difference. First operand 5456 states and 18828 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:34,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:34,036 INFO L93 Difference]: Finished difference Result 9853 states and 33899 transitions. [2021-07-09 18:50:34,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-07-09 18:50:34,036 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:34,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:34,056 INFO L225 Difference]: With dead ends: 9853 [2021-07-09 18:50:34,057 INFO L226 Difference]: Without dead ends: 9777 [2021-07-09 18:50:34,057 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1267.7ms TimeCoverageRelationStatistics Valid=438, Invalid=4964, Unknown=0, NotChecked=0, Total=5402 [2021-07-09 18:50:34,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9777 states. [2021-07-09 18:50:34,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9777 to 5470. [2021-07-09 18:50:34,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5470 states, 5469 states have (on average 3.4481623697202415) internal successors, (18858), 5469 states have internal predecessors, (18858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:34,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5470 states to 5470 states and 18858 transitions. [2021-07-09 18:50:34,172 INFO L78 Accepts]: Start accepts. Automaton has 5470 states and 18858 transitions. Word has length 39 [2021-07-09 18:50:34,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:34,172 INFO L482 AbstractCegarLoop]: Abstraction has 5470 states and 18858 transitions. [2021-07-09 18:50:34,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:34,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5470 states and 18858 transitions. [2021-07-09 18:50:34,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:34,203 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:34,203 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:34,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-07-09 18:50:34,204 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:34,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:34,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1488223146, now seen corresponding path program 116 times [2021-07-09 18:50:34,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:34,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789267023] [2021-07-09 18:50:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:34,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:34,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:34,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789267023] [2021-07-09 18:50:34,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789267023] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:34,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:34,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:34,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995377660] [2021-07-09 18:50:34,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:34,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:34,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:34,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:34,386 INFO L87 Difference]: Start difference. First operand 5470 states and 18858 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:37,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:37,057 INFO L93 Difference]: Finished difference Result 10000 states and 34295 transitions. [2021-07-09 18:50:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-09 18:50:37,057 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:37,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:37,078 INFO L225 Difference]: With dead ends: 10000 [2021-07-09 18:50:37,078 INFO L226 Difference]: Without dead ends: 9889 [2021-07-09 18:50:37,079 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 1442.5ms TimeCoverageRelationStatistics Valid=504, Invalid=5976, Unknown=0, NotChecked=0, Total=6480 [2021-07-09 18:50:37,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9889 states. [2021-07-09 18:50:37,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9889 to 5438. [2021-07-09 18:50:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5438 states, 5437 states have (on average 3.455030347618172) internal successors, (18785), 5437 states have internal predecessors, (18785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:37,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5438 states to 5438 states and 18785 transitions. [2021-07-09 18:50:37,192 INFO L78 Accepts]: Start accepts. Automaton has 5438 states and 18785 transitions. Word has length 39 [2021-07-09 18:50:37,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:37,192 INFO L482 AbstractCegarLoop]: Abstraction has 5438 states and 18785 transitions. [2021-07-09 18:50:37,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:37,192 INFO L276 IsEmpty]: Start isEmpty. Operand 5438 states and 18785 transitions. [2021-07-09 18:50:37,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:37,199 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:37,199 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:37,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-07-09 18:50:37,199 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:37,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:37,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1132034068, now seen corresponding path program 117 times [2021-07-09 18:50:37,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:37,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226859624] [2021-07-09 18:50:37,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:37,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:37,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226859624] [2021-07-09 18:50:37,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226859624] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:37,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:37,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:37,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604058475] [2021-07-09 18:50:37,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:37,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:37,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:37,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:37,380 INFO L87 Difference]: Start difference. First operand 5438 states and 18785 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:40,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:40,627 INFO L93 Difference]: Finished difference Result 10965 states and 37273 transitions. [2021-07-09 18:50:40,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-09 18:50:40,627 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:40,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:40,650 INFO L225 Difference]: With dead ends: 10965 [2021-07-09 18:50:40,650 INFO L226 Difference]: Without dead ends: 10835 [2021-07-09 18:50:40,651 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2585 ImplicationChecksByTransitivity, 1734.1ms TimeCoverageRelationStatistics Valid=647, Invalid=7543, Unknown=0, NotChecked=0, Total=8190 [2021-07-09 18:50:40,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10835 states. [2021-07-09 18:50:40,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10835 to 5645. [2021-07-09 18:50:40,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5645 states, 5644 states have (on average 3.4466690290574062) internal successors, (19453), 5644 states have internal predecessors, (19453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:40,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5645 states to 5645 states and 19453 transitions. [2021-07-09 18:50:40,768 INFO L78 Accepts]: Start accepts. Automaton has 5645 states and 19453 transitions. Word has length 39 [2021-07-09 18:50:40,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:40,768 INFO L482 AbstractCegarLoop]: Abstraction has 5645 states and 19453 transitions. [2021-07-09 18:50:40,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:40,769 INFO L276 IsEmpty]: Start isEmpty. Operand 5645 states and 19453 transitions. [2021-07-09 18:50:40,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:40,776 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:40,776 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:40,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-07-09 18:50:40,776 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:40,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:40,776 INFO L82 PathProgramCache]: Analyzing trace with hash 761614474, now seen corresponding path program 118 times [2021-07-09 18:50:40,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:40,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517252811] [2021-07-09 18:50:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:40,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:40,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517252811] [2021-07-09 18:50:40,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517252811] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:40,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:40,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:40,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734417988] [2021-07-09 18:50:40,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:40,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:40,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:40,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:40,954 INFO L87 Difference]: Start difference. First operand 5645 states and 19453 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:43,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:43,519 INFO L93 Difference]: Finished difference Result 9638 states and 32961 transitions. [2021-07-09 18:50:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-09 18:50:43,519 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:43,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:43,538 INFO L225 Difference]: With dead ends: 9638 [2021-07-09 18:50:43,538 INFO L226 Difference]: Without dead ends: 9575 [2021-07-09 18:50:43,539 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1931 ImplicationChecksByTransitivity, 1468.9ms TimeCoverageRelationStatistics Valid=559, Invalid=5921, Unknown=0, NotChecked=0, Total=6480 [2021-07-09 18:50:43,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9575 states. [2021-07-09 18:50:43,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9575 to 5645. [2021-07-09 18:50:43,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5645 states, 5644 states have (on average 3.4459603118355777) internal successors, (19449), 5644 states have internal predecessors, (19449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:43,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5645 states to 5645 states and 19449 transitions. [2021-07-09 18:50:43,651 INFO L78 Accepts]: Start accepts. Automaton has 5645 states and 19449 transitions. Word has length 39 [2021-07-09 18:50:43,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:43,651 INFO L482 AbstractCegarLoop]: Abstraction has 5645 states and 19449 transitions. [2021-07-09 18:50:43,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:43,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5645 states and 19449 transitions. [2021-07-09 18:50:43,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:43,659 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:43,659 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:43,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-07-09 18:50:43,659 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:43,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:43,660 INFO L82 PathProgramCache]: Analyzing trace with hash 984972090, now seen corresponding path program 119 times [2021-07-09 18:50:43,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:43,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221203275] [2021-07-09 18:50:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:43,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:43,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221203275] [2021-07-09 18:50:43,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221203275] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:43,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:43,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:43,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819778819] [2021-07-09 18:50:43,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:43,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:43,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:43,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:43,836 INFO L87 Difference]: Start difference. First operand 5645 states and 19449 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:48,362 INFO L93 Difference]: Finished difference Result 12438 states and 41785 transitions. [2021-07-09 18:50:48,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-07-09 18:50:48,362 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:48,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:48,387 INFO L225 Difference]: With dead ends: 12438 [2021-07-09 18:50:48,387 INFO L226 Difference]: Without dead ends: 12242 [2021-07-09 18:50:48,389 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6246 ImplicationChecksByTransitivity, 2874.0ms TimeCoverageRelationStatistics Valid=1157, Invalid=15873, Unknown=0, NotChecked=0, Total=17030 [2021-07-09 18:50:48,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12242 states. [2021-07-09 18:50:48,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12242 to 5991. [2021-07-09 18:50:48,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5991 states, 5990 states have (on average 3.46661101836394) internal successors, (20765), 5990 states have internal predecessors, (20765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5991 states to 5991 states and 20765 transitions. [2021-07-09 18:50:48,526 INFO L78 Accepts]: Start accepts. Automaton has 5991 states and 20765 transitions. Word has length 39 [2021-07-09 18:50:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:48,526 INFO L482 AbstractCegarLoop]: Abstraction has 5991 states and 20765 transitions. [2021-07-09 18:50:48,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:48,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5991 states and 20765 transitions. [2021-07-09 18:50:48,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:48,563 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:48,563 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:48,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-07-09 18:50:48,563 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:48,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:48,563 INFO L82 PathProgramCache]: Analyzing trace with hash -795626212, now seen corresponding path program 120 times [2021-07-09 18:50:48,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:48,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535296447] [2021-07-09 18:50:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:48,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:48,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:48,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535296447] [2021-07-09 18:50:48,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535296447] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:48,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:48,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:48,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539452234] [2021-07-09 18:50:48,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:48,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:48,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:48,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:48,744 INFO L87 Difference]: Start difference. First operand 5991 states and 20765 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:53,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:53,600 INFO L93 Difference]: Finished difference Result 13160 states and 44326 transitions. [2021-07-09 18:50:53,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2021-07-09 18:50:53,601 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:53,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:53,627 INFO L225 Difference]: With dead ends: 13160 [2021-07-09 18:50:53,628 INFO L226 Difference]: Without dead ends: 12985 [2021-07-09 18:50:53,629 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6915 ImplicationChecksByTransitivity, 3065.1ms TimeCoverageRelationStatistics Valid=1227, Invalid=17405, Unknown=0, NotChecked=0, Total=18632 [2021-07-09 18:50:53,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12985 states. [2021-07-09 18:50:53,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12985 to 6003. [2021-07-09 18:50:53,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6003 states, 6002 states have (on average 3.4680106631122958) internal successors, (20815), 6002 states have internal predecessors, (20815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:53,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6003 states to 6003 states and 20815 transitions. [2021-07-09 18:50:53,767 INFO L78 Accepts]: Start accepts. Automaton has 6003 states and 20815 transitions. Word has length 39 [2021-07-09 18:50:53,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:53,767 INFO L482 AbstractCegarLoop]: Abstraction has 6003 states and 20815 transitions. [2021-07-09 18:50:53,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand 6003 states and 20815 transitions. [2021-07-09 18:50:53,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:53,775 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:53,776 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:53,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-07-09 18:50:53,776 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:53,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1903455660, now seen corresponding path program 121 times [2021-07-09 18:50:53,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:53,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391533319] [2021-07-09 18:50:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:53,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:53,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391533319] [2021-07-09 18:50:53,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391533319] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:53,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:53,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:53,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42153541] [2021-07-09 18:50:53,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:53,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:53,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:53,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:53,983 INFO L87 Difference]: Start difference. First operand 6003 states and 20815 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:56,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:56,596 INFO L93 Difference]: Finished difference Result 10096 states and 34556 transitions. [2021-07-09 18:50:56,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-09 18:50:56,596 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:56,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:56,617 INFO L225 Difference]: With dead ends: 10096 [2021-07-09 18:50:56,617 INFO L226 Difference]: Without dead ends: 10041 [2021-07-09 18:50:56,617 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2122 ImplicationChecksByTransitivity, 1546.7ms TimeCoverageRelationStatistics Valid=595, Invalid=6377, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 18:50:56,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10041 states. [2021-07-09 18:50:56,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10041 to 6005. [2021-07-09 18:50:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6005 states, 6004 states have (on average 3.4673550966022653) internal successors, (20818), 6004 states have internal predecessors, (20818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:56,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6005 states to 6005 states and 20818 transitions. [2021-07-09 18:50:56,733 INFO L78 Accepts]: Start accepts. Automaton has 6005 states and 20818 transitions. Word has length 39 [2021-07-09 18:50:56,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:50:56,733 INFO L482 AbstractCegarLoop]: Abstraction has 6005 states and 20818 transitions. [2021-07-09 18:50:56,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:56,733 INFO L276 IsEmpty]: Start isEmpty. Operand 6005 states and 20818 transitions. [2021-07-09 18:50:56,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:50:56,742 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:50:56,742 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:50:56,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-07-09 18:50:56,742 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:50:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:50:56,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1218859414, now seen corresponding path program 122 times [2021-07-09 18:50:56,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:50:56,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638519352] [2021-07-09 18:50:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:50:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:50:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:50:56,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:50:56,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638519352] [2021-07-09 18:50:56,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638519352] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:50:56,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:50:56,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:50:56,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893864140] [2021-07-09 18:50:56,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:50:56,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:50:56,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:50:56,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:50:56,922 INFO L87 Difference]: Start difference. First operand 6005 states and 20818 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:50:59,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:50:59,976 INFO L93 Difference]: Finished difference Result 11129 states and 38066 transitions. [2021-07-09 18:50:59,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-09 18:50:59,977 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:50:59,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:50:59,999 INFO L225 Difference]: With dead ends: 11129 [2021-07-09 18:50:59,999 INFO L226 Difference]: Without dead ends: 11083 [2021-07-09 18:50:59,999 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2669 ImplicationChecksByTransitivity, 1724.2ms TimeCoverageRelationStatistics Valid=654, Invalid=7718, Unknown=0, NotChecked=0, Total=8372 [2021-07-09 18:51:00,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11083 states. [2021-07-09 18:51:00,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11083 to 6009. [2021-07-09 18:51:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6009 states, 6008 states have (on average 3.4663781624500665) internal successors, (20826), 6008 states have internal predecessors, (20826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6009 states to 6009 states and 20826 transitions. [2021-07-09 18:51:00,132 INFO L78 Accepts]: Start accepts. Automaton has 6009 states and 20826 transitions. Word has length 39 [2021-07-09 18:51:00,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:00,132 INFO L482 AbstractCegarLoop]: Abstraction has 6009 states and 20826 transitions. [2021-07-09 18:51:00,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:00,132 INFO L276 IsEmpty]: Start isEmpty. Operand 6009 states and 20826 transitions. [2021-07-09 18:51:00,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:00,140 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:00,140 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:00,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-07-09 18:51:00,140 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:00,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:00,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1466325576, now seen corresponding path program 123 times [2021-07-09 18:51:00,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:00,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092924567] [2021-07-09 18:51:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:00,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:00,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092924567] [2021-07-09 18:51:00,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092924567] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:00,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:00,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:00,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228989547] [2021-07-09 18:51:00,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:00,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:00,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:00,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:00,320 INFO L87 Difference]: Start difference. First operand 6009 states and 20826 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:03,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:03,001 INFO L93 Difference]: Finished difference Result 9952 states and 34247 transitions. [2021-07-09 18:51:03,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-07-09 18:51:03,001 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:03,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:03,021 INFO L225 Difference]: With dead ends: 9952 [2021-07-09 18:51:03,021 INFO L226 Difference]: Without dead ends: 9899 [2021-07-09 18:51:03,022 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2120 ImplicationChecksByTransitivity, 1563.8ms TimeCoverageRelationStatistics Valid=602, Invalid=6370, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 18:51:03,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9899 states. [2021-07-09 18:51:03,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9899 to 5999. [2021-07-09 18:51:03,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5999 states, 5998 states have (on average 3.4689896632210737) internal successors, (20807), 5998 states have internal predecessors, (20807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5999 states to 5999 states and 20807 transitions. [2021-07-09 18:51:03,135 INFO L78 Accepts]: Start accepts. Automaton has 5999 states and 20807 transitions. Word has length 39 [2021-07-09 18:51:03,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:03,135 INFO L482 AbstractCegarLoop]: Abstraction has 5999 states and 20807 transitions. [2021-07-09 18:51:03,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:03,135 INFO L276 IsEmpty]: Start isEmpty. Operand 5999 states and 20807 transitions. [2021-07-09 18:51:03,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:03,143 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:03,143 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:03,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-07-09 18:51:03,143 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:03,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:03,144 INFO L82 PathProgramCache]: Analyzing trace with hash -173000518, now seen corresponding path program 124 times [2021-07-09 18:51:03,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:03,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387470877] [2021-07-09 18:51:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:03,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:03,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387470877] [2021-07-09 18:51:03,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387470877] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:03,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:03,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:03,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668040638] [2021-07-09 18:51:03,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:03,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:03,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:03,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:03,323 INFO L87 Difference]: Start difference. First operand 5999 states and 20807 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:06,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:06,562 INFO L93 Difference]: Finished difference Result 11369 states and 38815 transitions. [2021-07-09 18:51:06,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-09 18:51:06,563 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:06,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:06,584 INFO L225 Difference]: With dead ends: 11369 [2021-07-09 18:51:06,584 INFO L226 Difference]: Without dead ends: 11302 [2021-07-09 18:51:06,585 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2586 ImplicationChecksByTransitivity, 1710.1ms TimeCoverageRelationStatistics Valid=634, Invalid=7556, Unknown=0, NotChecked=0, Total=8190 [2021-07-09 18:51:06,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11302 states. [2021-07-09 18:51:06,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11302 to 6017. [2021-07-09 18:51:06,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6017 states, 6016 states have (on average 3.465591755319149) internal successors, (20849), 6016 states have internal predecessors, (20849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6017 states to 6017 states and 20849 transitions. [2021-07-09 18:51:06,706 INFO L78 Accepts]: Start accepts. Automaton has 6017 states and 20849 transitions. Word has length 39 [2021-07-09 18:51:06,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:06,707 INFO L482 AbstractCegarLoop]: Abstraction has 6017 states and 20849 transitions. [2021-07-09 18:51:06,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:06,707 INFO L276 IsEmpty]: Start isEmpty. Operand 6017 states and 20849 transitions. [2021-07-09 18:51:06,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:06,715 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:06,715 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:06,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-07-09 18:51:06,715 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:06,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:06,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1097072826, now seen corresponding path program 125 times [2021-07-09 18:51:06,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:06,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122607244] [2021-07-09 18:51:06,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:06,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:06,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122607244] [2021-07-09 18:51:06,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122607244] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:06,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:06,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:06,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873039118] [2021-07-09 18:51:06,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:06,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:06,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:06,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:06,890 INFO L87 Difference]: Start difference. First operand 6017 states and 20849 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:09,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:09,412 INFO L93 Difference]: Finished difference Result 10113 states and 34632 transitions. [2021-07-09 18:51:09,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-09 18:51:09,413 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:09,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:09,434 INFO L225 Difference]: With dead ends: 10113 [2021-07-09 18:51:09,434 INFO L226 Difference]: Without dead ends: 10038 [2021-07-09 18:51:09,435 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1931 ImplicationChecksByTransitivity, 1422.9ms TimeCoverageRelationStatistics Valid=546, Invalid=5934, Unknown=0, NotChecked=0, Total=6480 [2021-07-09 18:51:09,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10038 states. [2021-07-09 18:51:09,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10038 to 6017. [2021-07-09 18:51:09,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6017 states, 6016 states have (on average 3.464594414893617) internal successors, (20843), 6016 states have internal predecessors, (20843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:09,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6017 states to 6017 states and 20843 transitions. [2021-07-09 18:51:09,565 INFO L78 Accepts]: Start accepts. Automaton has 6017 states and 20843 transitions. Word has length 39 [2021-07-09 18:51:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:09,565 INFO L482 AbstractCegarLoop]: Abstraction has 6017 states and 20843 transitions. [2021-07-09 18:51:09,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 6017 states and 20843 transitions. [2021-07-09 18:51:09,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:09,574 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:09,574 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:09,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-07-09 18:51:09,574 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:09,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:09,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1978588982, now seen corresponding path program 126 times [2021-07-09 18:51:09,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:09,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231371172] [2021-07-09 18:51:09,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:09,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:09,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231371172] [2021-07-09 18:51:09,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231371172] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:09,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:09,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:09,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851839576] [2021-07-09 18:51:09,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:09,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:09,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:09,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:09,781 INFO L87 Difference]: Start difference. First operand 6017 states and 20843 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:14,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:14,379 INFO L93 Difference]: Finished difference Result 12421 states and 41792 transitions. [2021-07-09 18:51:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-07-09 18:51:14,380 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:14,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:14,404 INFO L225 Difference]: With dead ends: 12421 [2021-07-09 18:51:14,404 INFO L226 Difference]: Without dead ends: 12254 [2021-07-09 18:51:14,405 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6236 ImplicationChecksByTransitivity, 2920.1ms TimeCoverageRelationStatistics Valid=1144, Invalid=15886, Unknown=0, NotChecked=0, Total=17030 [2021-07-09 18:51:14,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12254 states. [2021-07-09 18:51:14,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12254 to 6026. [2021-07-09 18:51:14,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6026 states, 6025 states have (on average 3.4635684647302907) internal successors, (20868), 6025 states have internal predecessors, (20868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:14,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 20868 transitions. [2021-07-09 18:51:14,536 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 20868 transitions. Word has length 39 [2021-07-09 18:51:14,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:14,536 INFO L482 AbstractCegarLoop]: Abstraction has 6026 states and 20868 transitions. [2021-07-09 18:51:14,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:14,537 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 20868 transitions. [2021-07-09 18:51:14,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:14,544 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:14,544 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:14,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-07-09 18:51:14,545 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:14,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:14,545 INFO L82 PathProgramCache]: Analyzing trace with hash 197990680, now seen corresponding path program 127 times [2021-07-09 18:51:14,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:14,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432782215] [2021-07-09 18:51:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:14,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:14,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:14,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432782215] [2021-07-09 18:51:14,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432782215] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:14,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:14,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:14,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147013731] [2021-07-09 18:51:14,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:14,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:14,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:14,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:14,722 INFO L87 Difference]: Start difference. First operand 6026 states and 20868 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:19,664 INFO L93 Difference]: Finished difference Result 12965 states and 43816 transitions. [2021-07-09 18:51:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2021-07-09 18:51:19,665 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:19,695 INFO L225 Difference]: With dead ends: 12965 [2021-07-09 18:51:19,695 INFO L226 Difference]: Without dead ends: 12831 [2021-07-09 18:51:19,696 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7028 ImplicationChecksByTransitivity, 3109.7ms TimeCoverageRelationStatistics Valid=1224, Invalid=17682, Unknown=0, NotChecked=0, Total=18906 [2021-07-09 18:51:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12831 states. [2021-07-09 18:51:19,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12831 to 5962. [2021-07-09 18:51:19,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5962 states, 5961 states have (on average 3.462170776715316) internal successors, (20638), 5961 states have internal predecessors, (20638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5962 states to 5962 states and 20638 transitions. [2021-07-09 18:51:19,847 INFO L78 Accepts]: Start accepts. Automaton has 5962 states and 20638 transitions. Word has length 39 [2021-07-09 18:51:19,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:19,847 INFO L482 AbstractCegarLoop]: Abstraction has 5962 states and 20638 transitions. [2021-07-09 18:51:19,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:19,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5962 states and 20638 transitions. [2021-07-09 18:51:19,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:19,856 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:19,856 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:19,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-07-09 18:51:19,856 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:19,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:19,857 INFO L82 PathProgramCache]: Analyzing trace with hash 441169752, now seen corresponding path program 128 times [2021-07-09 18:51:19,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:19,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899576214] [2021-07-09 18:51:19,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:20,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:20,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899576214] [2021-07-09 18:51:20,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899576214] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:20,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:20,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:20,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592068838] [2021-07-09 18:51:20,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:20,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:20,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:20,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:20,055 INFO L87 Difference]: Start difference. First operand 5962 states and 20638 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:22,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:22,731 INFO L93 Difference]: Finished difference Result 10072 states and 34346 transitions. [2021-07-09 18:51:22,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-09 18:51:22,731 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:22,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:22,752 INFO L225 Difference]: With dead ends: 10072 [2021-07-09 18:51:22,752 INFO L226 Difference]: Without dead ends: 10009 [2021-07-09 18:51:22,753 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2123 ImplicationChecksByTransitivity, 1506.8ms TimeCoverageRelationStatistics Valid=574, Invalid=6398, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 18:51:22,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10009 states. [2021-07-09 18:51:22,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10009 to 5965. [2021-07-09 18:51:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5965 states, 5964 states have (on average 3.461267605633803) internal successors, (20643), 5964 states have internal predecessors, (20643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:22,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5965 states to 5965 states and 20643 transitions. [2021-07-09 18:51:22,877 INFO L78 Accepts]: Start accepts. Automaton has 5965 states and 20643 transitions. Word has length 39 [2021-07-09 18:51:22,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:22,877 INFO L482 AbstractCegarLoop]: Abstraction has 5965 states and 20643 transitions. [2021-07-09 18:51:22,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:22,877 INFO L276 IsEmpty]: Start isEmpty. Operand 5965 states and 20643 transitions. [2021-07-09 18:51:22,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:22,886 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:22,886 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:22,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-07-09 18:51:22,886 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:22,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:22,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1486472006, now seen corresponding path program 129 times [2021-07-09 18:51:22,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:22,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068716780] [2021-07-09 18:51:22,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:23,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:23,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068716780] [2021-07-09 18:51:23,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068716780] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:23,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:23,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:23,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264717575] [2021-07-09 18:51:23,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:23,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:23,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:23,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:23,075 INFO L87 Difference]: Start difference. First operand 5965 states and 20643 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:26,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:26,113 INFO L93 Difference]: Finished difference Result 11071 states and 37791 transitions. [2021-07-09 18:51:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-07-09 18:51:26,113 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:26,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:26,136 INFO L225 Difference]: With dead ends: 11071 [2021-07-09 18:51:26,136 INFO L226 Difference]: Without dead ends: 11025 [2021-07-09 18:51:26,137 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2671 ImplicationChecksByTransitivity, 1694.0ms TimeCoverageRelationStatistics Valid=629, Invalid=7743, Unknown=0, NotChecked=0, Total=8372 [2021-07-09 18:51:26,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11025 states. [2021-07-09 18:51:26,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11025 to 5972. [2021-07-09 18:51:26,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5972 states, 5971 states have (on average 3.4597219896164795) internal successors, (20658), 5971 states have internal predecessors, (20658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5972 states to 5972 states and 20658 transitions. [2021-07-09 18:51:26,281 INFO L78 Accepts]: Start accepts. Automaton has 5972 states and 20658 transitions. Word has length 39 [2021-07-09 18:51:26,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:26,281 INFO L482 AbstractCegarLoop]: Abstraction has 5972 states and 20658 transitions. [2021-07-09 18:51:26,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:26,281 INFO L276 IsEmpty]: Start isEmpty. Operand 5972 states and 20658 transitions. [2021-07-09 18:51:26,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:26,289 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:26,289 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:26,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-07-09 18:51:26,289 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:26,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:26,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1373427800, now seen corresponding path program 130 times [2021-07-09 18:51:26,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:26,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265742654] [2021-07-09 18:51:26,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:26,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:26,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265742654] [2021-07-09 18:51:26,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265742654] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:26,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:26,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:26,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850472103] [2021-07-09 18:51:26,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:26,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:26,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:26,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:26,467 INFO L87 Difference]: Start difference. First operand 5972 states and 20658 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:29,116 INFO L93 Difference]: Finished difference Result 9716 states and 33428 transitions. [2021-07-09 18:51:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-07-09 18:51:29,116 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:29,136 INFO L225 Difference]: With dead ends: 9716 [2021-07-09 18:51:29,136 INFO L226 Difference]: Without dead ends: 9649 [2021-07-09 18:51:29,136 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1990 ImplicationChecksByTransitivity, 1493.4ms TimeCoverageRelationStatistics Valid=553, Invalid=6089, Unknown=0, NotChecked=0, Total=6642 [2021-07-09 18:51:29,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9649 states. [2021-07-09 18:51:29,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9649 to 5956. [2021-07-09 18:51:29,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5956 states, 5955 states have (on average 3.4636439966414776) internal successors, (20626), 5955 states have internal predecessors, (20626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:29,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 20626 transitions. [2021-07-09 18:51:29,249 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 20626 transitions. Word has length 39 [2021-07-09 18:51:29,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:29,249 INFO L482 AbstractCegarLoop]: Abstraction has 5956 states and 20626 transitions. [2021-07-09 18:51:29,249 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:29,249 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 20626 transitions. [2021-07-09 18:51:29,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:29,257 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:29,257 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:29,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-07-09 18:51:29,257 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:29,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:29,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1286324824, now seen corresponding path program 131 times [2021-07-09 18:51:29,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:29,258 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728031436] [2021-07-09 18:51:29,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:29,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:29,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728031436] [2021-07-09 18:51:29,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728031436] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:29,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:29,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:29,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742326332] [2021-07-09 18:51:29,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:29,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:29,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:29,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:29,460 INFO L87 Difference]: Start difference. First operand 5956 states and 20626 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:32,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:32,160 INFO L93 Difference]: Finished difference Result 10007 states and 34455 transitions. [2021-07-09 18:51:32,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-07-09 18:51:32,161 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:32,181 INFO L225 Difference]: With dead ends: 10007 [2021-07-09 18:51:32,181 INFO L226 Difference]: Without dead ends: 9944 [2021-07-09 18:51:32,181 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1997 ImplicationChecksByTransitivity, 1489.5ms TimeCoverageRelationStatistics Valid=536, Invalid=6106, Unknown=0, NotChecked=0, Total=6642 [2021-07-09 18:51:32,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9944 states. [2021-07-09 18:51:32,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9944 to 5948. [2021-07-09 18:51:32,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 5947 states have (on average 3.4649403060366573) internal successors, (20606), 5947 states have internal predecessors, (20606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:32,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 20606 transitions. [2021-07-09 18:51:32,298 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 20606 transitions. Word has length 39 [2021-07-09 18:51:32,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:32,298 INFO L482 AbstractCegarLoop]: Abstraction has 5948 states and 20606 transitions. [2021-07-09 18:51:32,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:32,299 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 20606 transitions. [2021-07-09 18:51:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:32,306 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:32,307 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:32,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-07-09 18:51:32,307 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:32,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:32,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1101031980, now seen corresponding path program 132 times [2021-07-09 18:51:32,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:32,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380407702] [2021-07-09 18:51:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:32,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:32,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380407702] [2021-07-09 18:51:32,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380407702] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:32,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:32,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:32,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443005739] [2021-07-09 18:51:32,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:32,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:32,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:32,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:32,482 INFO L87 Difference]: Start difference. First operand 5948 states and 20606 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:35,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:35,223 INFO L93 Difference]: Finished difference Result 10092 states and 34665 transitions. [2021-07-09 18:51:35,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-07-09 18:51:35,223 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:35,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:35,244 INFO L225 Difference]: With dead ends: 10092 [2021-07-09 18:51:35,244 INFO L226 Difference]: Without dead ends: 10017 [2021-07-09 18:51:35,244 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1997 ImplicationChecksByTransitivity, 1494.9ms TimeCoverageRelationStatistics Valid=536, Invalid=6106, Unknown=0, NotChecked=0, Total=6642 [2021-07-09 18:51:35,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10017 states. [2021-07-09 18:51:35,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10017 to 5936. [2021-07-09 18:51:35,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5935 states have (on average 3.4668913226621734) internal successors, (20576), 5935 states have internal predecessors, (20576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:35,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 20576 transitions. [2021-07-09 18:51:35,360 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 20576 transitions. Word has length 39 [2021-07-09 18:51:35,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:35,360 INFO L482 AbstractCegarLoop]: Abstraction has 5936 states and 20576 transitions. [2021-07-09 18:51:35,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:35,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 20576 transitions. [2021-07-09 18:51:35,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:35,368 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:35,368 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:35,369 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-07-09 18:51:35,369 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:35,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:35,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1101755816, now seen corresponding path program 133 times [2021-07-09 18:51:35,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:35,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110649947] [2021-07-09 18:51:35,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:35,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:35,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:35,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110649947] [2021-07-09 18:51:35,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110649947] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:35,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:35,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:35,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22350842] [2021-07-09 18:51:35,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:35,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:35,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:35,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:35,546 INFO L87 Difference]: Start difference. First operand 5936 states and 20576 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:38,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:38,455 INFO L93 Difference]: Finished difference Result 10741 states and 36799 transitions. [2021-07-09 18:51:38,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-07-09 18:51:38,455 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:38,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:38,503 INFO L225 Difference]: With dead ends: 10741 [2021-07-09 18:51:38,503 INFO L226 Difference]: Without dead ends: 10686 [2021-07-09 18:51:38,503 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 1498.4ms TimeCoverageRelationStatistics Valid=563, Invalid=6577, Unknown=0, NotChecked=0, Total=7140 [2021-07-09 18:51:38,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10686 states. [2021-07-09 18:51:38,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10686 to 5938. [2021-07-09 18:51:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5938 states, 5937 states have (on average 3.466565605524676) internal successors, (20581), 5937 states have internal predecessors, (20581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:38,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5938 states to 5938 states and 20581 transitions. [2021-07-09 18:51:38,616 INFO L78 Accepts]: Start accepts. Automaton has 5938 states and 20581 transitions. Word has length 39 [2021-07-09 18:51:38,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:38,617 INFO L482 AbstractCegarLoop]: Abstraction has 5938 states and 20581 transitions. [2021-07-09 18:51:38,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:38,617 INFO L276 IsEmpty]: Start isEmpty. Operand 5938 states and 20581 transitions. [2021-07-09 18:51:38,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:38,625 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:38,625 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:38,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-07-09 18:51:38,625 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:38,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:38,625 INFO L82 PathProgramCache]: Analyzing trace with hash -399118710, now seen corresponding path program 134 times [2021-07-09 18:51:38,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:38,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856348258] [2021-07-09 18:51:38,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:38,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:38,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856348258] [2021-07-09 18:51:38,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856348258] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:38,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:38,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:38,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450950374] [2021-07-09 18:51:38,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:38,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:38,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:38,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:38,804 INFO L87 Difference]: Start difference. First operand 5938 states and 20581 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:41,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:41,733 INFO L93 Difference]: Finished difference Result 10729 states and 36761 transitions. [2021-07-09 18:51:41,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-07-09 18:51:41,734 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:41,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:41,757 INFO L225 Difference]: With dead ends: 10729 [2021-07-09 18:51:41,757 INFO L226 Difference]: Without dead ends: 10656 [2021-07-09 18:51:41,758 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 1530.8ms TimeCoverageRelationStatistics Valid=563, Invalid=6577, Unknown=0, NotChecked=0, Total=7140 [2021-07-09 18:51:41,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10656 states. [2021-07-09 18:51:41,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10656 to 5932. [2021-07-09 18:51:41,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5932 states, 5931 states have (on average 3.4678806272129488) internal successors, (20568), 5931 states have internal predecessors, (20568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:41,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5932 states to 5932 states and 20568 transitions. [2021-07-09 18:51:41,915 INFO L78 Accepts]: Start accepts. Automaton has 5932 states and 20568 transitions. Word has length 39 [2021-07-09 18:51:41,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:41,915 INFO L482 AbstractCegarLoop]: Abstraction has 5932 states and 20568 transitions. [2021-07-09 18:51:41,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:41,915 INFO L276 IsEmpty]: Start isEmpty. Operand 5932 states and 20568 transitions. [2021-07-09 18:51:41,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:41,923 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:41,923 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:41,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-07-09 18:51:41,924 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:41,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:41,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1375455828, now seen corresponding path program 135 times [2021-07-09 18:51:41,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:41,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700056990] [2021-07-09 18:51:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:42,098 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:42,098 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700056990] [2021-07-09 18:51:42,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700056990] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:42,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:42,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:42,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475615101] [2021-07-09 18:51:42,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:42,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:42,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:42,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:42,099 INFO L87 Difference]: Start difference. First operand 5932 states and 20568 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:45,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:45,923 INFO L93 Difference]: Finished difference Result 12644 states and 42987 transitions. [2021-07-09 18:51:45,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-07-09 18:51:45,923 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:45,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:45,948 INFO L225 Difference]: With dead ends: 12644 [2021-07-09 18:51:45,948 INFO L226 Difference]: Without dead ends: 12526 [2021-07-09 18:51:45,949 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4303 ImplicationChecksByTransitivity, 2219.2ms TimeCoverageRelationStatistics Valid=884, Invalid=11548, Unknown=0, NotChecked=0, Total=12432 [2021-07-09 18:51:45,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12526 states. [2021-07-09 18:51:46,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12526 to 6322. [2021-07-09 18:51:46,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6322 states, 6321 states have (on average 3.479829140958709) internal successors, (21996), 6321 states have internal predecessors, (21996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6322 states to 6322 states and 21996 transitions. [2021-07-09 18:51:46,086 INFO L78 Accepts]: Start accepts. Automaton has 6322 states and 21996 transitions. Word has length 39 [2021-07-09 18:51:46,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:46,086 INFO L482 AbstractCegarLoop]: Abstraction has 6322 states and 21996 transitions. [2021-07-09 18:51:46,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:46,086 INFO L276 IsEmpty]: Start isEmpty. Operand 6322 states and 21996 transitions. [2021-07-09 18:51:46,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:46,095 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:46,095 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:46,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-07-09 18:51:46,095 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:46,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:46,095 INFO L82 PathProgramCache]: Analyzing trace with hash -202803606, now seen corresponding path program 136 times [2021-07-09 18:51:46,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:46,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291908392] [2021-07-09 18:51:46,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:46,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:46,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291908392] [2021-07-09 18:51:46,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291908392] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:46,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:46,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:46,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683085541] [2021-07-09 18:51:46,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:46,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:46,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:46,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:46,275 INFO L87 Difference]: Start difference. First operand 6322 states and 21996 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:50,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:50,261 INFO L93 Difference]: Finished difference Result 13538 states and 45942 transitions. [2021-07-09 18:51:50,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-07-09 18:51:50,261 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:50,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:50,289 INFO L225 Difference]: With dead ends: 13538 [2021-07-09 18:51:50,289 INFO L226 Difference]: Without dead ends: 13420 [2021-07-09 18:51:50,290 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4487 ImplicationChecksByTransitivity, 2334.0ms TimeCoverageRelationStatistics Valid=915, Invalid=11967, Unknown=0, NotChecked=0, Total=12882 [2021-07-09 18:51:50,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13420 states. [2021-07-09 18:51:50,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13420 to 6375. [2021-07-09 18:51:50,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6375 states, 6374 states have (on average 3.479290869155946) internal successors, (22177), 6374 states have internal predecessors, (22177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:50,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6375 states to 6375 states and 22177 transitions. [2021-07-09 18:51:50,440 INFO L78 Accepts]: Start accepts. Automaton has 6375 states and 22177 transitions. Word has length 39 [2021-07-09 18:51:50,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:50,440 INFO L482 AbstractCegarLoop]: Abstraction has 6375 states and 22177 transitions. [2021-07-09 18:51:50,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:50,440 INFO L276 IsEmpty]: Start isEmpty. Operand 6375 states and 22177 transitions. [2021-07-09 18:51:50,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:50,449 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:50,449 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:50,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-07-09 18:51:50,449 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:50,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:50,450 INFO L82 PathProgramCache]: Analyzing trace with hash -270548486, now seen corresponding path program 137 times [2021-07-09 18:51:50,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:50,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691492216] [2021-07-09 18:51:50,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:50,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:50,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:50,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691492216] [2021-07-09 18:51:50,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691492216] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:50,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:50,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:50,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218278551] [2021-07-09 18:51:50,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:50,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:50,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:50,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:50,628 INFO L87 Difference]: Start difference. First operand 6375 states and 22177 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:54,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:54,345 INFO L93 Difference]: Finished difference Result 12677 states and 43055 transitions. [2021-07-09 18:51:54,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-07-09 18:51:54,346 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:54,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:54,373 INFO L225 Difference]: With dead ends: 12677 [2021-07-09 18:51:54,373 INFO L226 Difference]: Without dead ends: 12612 [2021-07-09 18:51:54,374 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4304 ImplicationChecksByTransitivity, 2190.4ms TimeCoverageRelationStatistics Valid=873, Invalid=11559, Unknown=0, NotChecked=0, Total=12432 [2021-07-09 18:51:54,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12612 states. [2021-07-09 18:51:54,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12612 to 6376. [2021-07-09 18:51:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6376 states, 6375 states have (on average 3.478901960784314) internal successors, (22178), 6375 states have internal predecessors, (22178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:54,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6376 states to 6376 states and 22178 transitions. [2021-07-09 18:51:54,540 INFO L78 Accepts]: Start accepts. Automaton has 6376 states and 22178 transitions. Word has length 39 [2021-07-09 18:51:54,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:54,540 INFO L482 AbstractCegarLoop]: Abstraction has 6376 states and 22178 transitions. [2021-07-09 18:51:54,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:54,540 INFO L276 IsEmpty]: Start isEmpty. Operand 6376 states and 22178 transitions. [2021-07-09 18:51:54,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:54,550 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:54,550 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:54,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-07-09 18:51:54,550 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:54,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:54,550 INFO L82 PathProgramCache]: Analyzing trace with hash 2096777052, now seen corresponding path program 138 times [2021-07-09 18:51:54,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:54,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798671839] [2021-07-09 18:51:54,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:54,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:54,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:54,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798671839] [2021-07-09 18:51:54,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798671839] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:54,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:54,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:54,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469326583] [2021-07-09 18:51:54,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:54,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:54,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:54,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:54,724 INFO L87 Difference]: Start difference. First operand 6376 states and 22178 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:58,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:51:58,627 INFO L93 Difference]: Finished difference Result 13586 states and 46079 transitions. [2021-07-09 18:51:58,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-07-09 18:51:58,627 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:51:58,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:51:58,655 INFO L225 Difference]: With dead ends: 13586 [2021-07-09 18:51:58,655 INFO L226 Difference]: Without dead ends: 13436 [2021-07-09 18:51:58,655 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4393 ImplicationChecksByTransitivity, 2261.7ms TimeCoverageRelationStatistics Valid=894, Invalid=11762, Unknown=0, NotChecked=0, Total=12656 [2021-07-09 18:51:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13436 states. [2021-07-09 18:51:58,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13436 to 6336. [2021-07-09 18:51:58,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6336 states, 6335 states have (on average 3.4820836621941593) internal successors, (22059), 6335 states have internal predecessors, (22059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:58,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6336 states to 6336 states and 22059 transitions. [2021-07-09 18:51:58,801 INFO L78 Accepts]: Start accepts. Automaton has 6336 states and 22059 transitions. Word has length 39 [2021-07-09 18:51:58,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:51:58,801 INFO L482 AbstractCegarLoop]: Abstraction has 6336 states and 22059 transitions. [2021-07-09 18:51:58,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:51:58,801 INFO L276 IsEmpty]: Start isEmpty. Operand 6336 states and 22059 transitions. [2021-07-09 18:51:58,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:51:58,810 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:51:58,810 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:51:58,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-07-09 18:51:58,811 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:51:58,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:51:58,811 INFO L82 PathProgramCache]: Analyzing trace with hash -131376330, now seen corresponding path program 139 times [2021-07-09 18:51:58,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:51:58,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608024940] [2021-07-09 18:51:58,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:51:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:51:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:51:58,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:51:58,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608024940] [2021-07-09 18:51:58,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608024940] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:51:58,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:51:58,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:51:58,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403362430] [2021-07-09 18:51:58,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:51:58,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:51:58,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:51:58,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:51:58,991 INFO L87 Difference]: Start difference. First operand 6336 states and 22059 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:03,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:52:03,733 INFO L93 Difference]: Finished difference Result 13288 states and 44858 transitions. [2021-07-09 18:52:03,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-07-09 18:52:03,733 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:52:03,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:52:03,760 INFO L225 Difference]: With dead ends: 13288 [2021-07-09 18:52:03,760 INFO L226 Difference]: Without dead ends: 13083 [2021-07-09 18:52:03,761 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5809 ImplicationChecksByTransitivity, 2837.9ms TimeCoverageRelationStatistics Valid=1074, Invalid=14928, Unknown=0, NotChecked=0, Total=16002 [2021-07-09 18:52:03,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13083 states. [2021-07-09 18:52:03,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13083 to 6470. [2021-07-09 18:52:03,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6470 states, 6469 states have (on average 3.488019786674911) internal successors, (22564), 6469 states have internal predecessors, (22564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:03,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6470 states to 6470 states and 22564 transitions. [2021-07-09 18:52:03,905 INFO L78 Accepts]: Start accepts. Automaton has 6470 states and 22564 transitions. Word has length 39 [2021-07-09 18:52:03,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:52:03,905 INFO L482 AbstractCegarLoop]: Abstraction has 6470 states and 22564 transitions. [2021-07-09 18:52:03,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand 6470 states and 22564 transitions. [2021-07-09 18:52:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:52:03,914 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:52:03,915 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:52:03,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-07-09 18:52:03,915 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:52:03,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:52:03,915 INFO L82 PathProgramCache]: Analyzing trace with hash 787107240, now seen corresponding path program 140 times [2021-07-09 18:52:03,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:52:03,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232014309] [2021-07-09 18:52:03,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:52:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:52:04,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:52:04,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:52:04,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232014309] [2021-07-09 18:52:04,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232014309] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:52:04,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:52:04,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:52:04,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814796433] [2021-07-09 18:52:04,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:52:04,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:52:04,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:52:04,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:52:04,090 INFO L87 Difference]: Start difference. First operand 6470 states and 22564 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:06,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:52:06,995 INFO L93 Difference]: Finished difference Result 11615 states and 39719 transitions. [2021-07-09 18:52:06,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-09 18:52:06,996 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:52:06,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:52:07,018 INFO L225 Difference]: With dead ends: 11615 [2021-07-09 18:52:07,018 INFO L226 Difference]: Without dead ends: 11572 [2021-07-09 18:52:07,019 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2132 ImplicationChecksByTransitivity, 1504.9ms TimeCoverageRelationStatistics Valid=534, Invalid=6438, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 18:52:07,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11572 states. [2021-07-09 18:52:07,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11572 to 6482. [2021-07-09 18:52:07,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6482 states, 6481 states have (on average 3.486344699891992) internal successors, (22595), 6481 states have internal predecessors, (22595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6482 states to 6482 states and 22595 transitions. [2021-07-09 18:52:07,154 INFO L78 Accepts]: Start accepts. Automaton has 6482 states and 22595 transitions. Word has length 39 [2021-07-09 18:52:07,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:52:07,154 INFO L482 AbstractCegarLoop]: Abstraction has 6482 states and 22595 transitions. [2021-07-09 18:52:07,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand 6482 states and 22595 transitions. [2021-07-09 18:52:07,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:52:07,163 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:52:07,163 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:52:07,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-07-09 18:52:07,164 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:52:07,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:52:07,164 INFO L82 PathProgramCache]: Analyzing trace with hash 807255974, now seen corresponding path program 141 times [2021-07-09 18:52:07,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:52:07,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503616207] [2021-07-09 18:52:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:52:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:52:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:52:07,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:52:07,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503616207] [2021-07-09 18:52:07,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503616207] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:52:07,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:52:07,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:52:07,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916049399] [2021-07-09 18:52:07,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:52:07,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:52:07,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:52:07,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:52:07,339 INFO L87 Difference]: Start difference. First operand 6482 states and 22595 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:09,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:52:09,951 INFO L93 Difference]: Finished difference Result 10838 states and 37200 transitions. [2021-07-09 18:52:09,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-07-09 18:52:09,951 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:52:09,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:52:09,974 INFO L225 Difference]: With dead ends: 10838 [2021-07-09 18:52:09,974 INFO L226 Difference]: Without dead ends: 10795 [2021-07-09 18:52:09,975 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1815 ImplicationChecksByTransitivity, 1411.0ms TimeCoverageRelationStatistics Valid=490, Invalid=5672, Unknown=0, NotChecked=0, Total=6162 [2021-07-09 18:52:09,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10795 states. [2021-07-09 18:52:10,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10795 to 6478. [2021-07-09 18:52:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6478 states, 6477 states have (on average 3.4869538366527713) internal successors, (22585), 6477 states have internal predecessors, (22585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:10,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6478 states to 6478 states and 22585 transitions. [2021-07-09 18:52:10,153 INFO L78 Accepts]: Start accepts. Automaton has 6478 states and 22585 transitions. Word has length 39 [2021-07-09 18:52:10,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:52:10,153 INFO L482 AbstractCegarLoop]: Abstraction has 6478 states and 22585 transitions. [2021-07-09 18:52:10,153 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:10,153 INFO L276 IsEmpty]: Start isEmpty. Operand 6478 states and 22585 transitions. [2021-07-09 18:52:10,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:52:10,162 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:52:10,162 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:52:10,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-07-09 18:52:10,162 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:52:10,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:52:10,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1959759462, now seen corresponding path program 142 times [2021-07-09 18:52:10,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:52:10,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031479171] [2021-07-09 18:52:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:52:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:52:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:52:10,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:52:10,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031479171] [2021-07-09 18:52:10,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031479171] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:52:10,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:52:10,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:52:10,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007047097] [2021-07-09 18:52:10,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:52:10,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:52:10,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:52:10,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:52:10,343 INFO L87 Difference]: Start difference. First operand 6478 states and 22585 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:13,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:52:13,815 INFO L93 Difference]: Finished difference Result 12609 states and 42778 transitions. [2021-07-09 18:52:13,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-07-09 18:52:13,815 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:52:13,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:52:13,840 INFO L225 Difference]: With dead ends: 12609 [2021-07-09 18:52:13,841 INFO L226 Difference]: Without dead ends: 12428 [2021-07-09 18:52:13,842 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2958 ImplicationChecksByTransitivity, 1886.4ms TimeCoverageRelationStatistics Valid=692, Invalid=8428, Unknown=0, NotChecked=0, Total=9120 [2021-07-09 18:52:13,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12428 states. [2021-07-09 18:52:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12428 to 6615. [2021-07-09 18:52:13,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6615 states, 6614 states have (on average 3.487753250680375) internal successors, (23068), 6614 states have internal predecessors, (23068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6615 states to 6615 states and 23068 transitions. [2021-07-09 18:52:14,001 INFO L78 Accepts]: Start accepts. Automaton has 6615 states and 23068 transitions. Word has length 39 [2021-07-09 18:52:14,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:52:14,001 INFO L482 AbstractCegarLoop]: Abstraction has 6615 states and 23068 transitions. [2021-07-09 18:52:14,001 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 6615 states and 23068 transitions. [2021-07-09 18:52:14,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:52:14,011 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:52:14,011 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:52:14,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-07-09 18:52:14,011 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:52:14,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:52:14,012 INFO L82 PathProgramCache]: Analyzing trace with hash -119807080, now seen corresponding path program 143 times [2021-07-09 18:52:14,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:52:14,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385062998] [2021-07-09 18:52:14,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:52:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:52:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:52:14,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:52:14,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385062998] [2021-07-09 18:52:14,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385062998] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:52:14,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:52:14,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:52:14,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245859690] [2021-07-09 18:52:14,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:52:14,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:52:14,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:52:14,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:52:14,173 INFO L87 Difference]: Start difference. First operand 6615 states and 23068 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:17,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:52:17,183 INFO L93 Difference]: Finished difference Result 12388 states and 42188 transitions. [2021-07-09 18:52:17,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-07-09 18:52:17,184 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:52:17,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:52:17,209 INFO L225 Difference]: With dead ends: 12388 [2021-07-09 18:52:17,209 INFO L226 Difference]: Without dead ends: 12312 [2021-07-09 18:52:17,210 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2389 ImplicationChecksByTransitivity, 1579.7ms TimeCoverageRelationStatistics Valid=593, Invalid=6889, Unknown=0, NotChecked=0, Total=7482 [2021-07-09 18:52:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12312 states. [2021-07-09 18:52:17,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12312 to 6623. [2021-07-09 18:52:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6623 states, 6622 states have (on average 3.485955904560556) internal successors, (23084), 6622 states have internal predecessors, (23084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 23084 transitions. [2021-07-09 18:52:17,376 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 23084 transitions. Word has length 39 [2021-07-09 18:52:17,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:52:17,376 INFO L482 AbstractCegarLoop]: Abstraction has 6623 states and 23084 transitions. [2021-07-09 18:52:17,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:17,376 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 23084 transitions. [2021-07-09 18:52:17,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:52:17,386 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:52:17,386 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:52:17,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-07-09 18:52:17,386 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:52:17,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:52:17,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1137860692, now seen corresponding path program 144 times [2021-07-09 18:52:17,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:52:17,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146219455] [2021-07-09 18:52:17,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:52:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:52:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:52:17,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:52:17,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146219455] [2021-07-09 18:52:17,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146219455] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:52:17,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:52:17,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:52:17,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634112569] [2021-07-09 18:52:17,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:52:17,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:52:17,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:52:17,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:52:17,560 INFO L87 Difference]: Start difference. First operand 6623 states and 23084 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:20,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:52:20,941 INFO L93 Difference]: Finished difference Result 12474 states and 42434 transitions. [2021-07-09 18:52:20,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-07-09 18:52:20,941 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:52:20,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:52:20,965 INFO L225 Difference]: With dead ends: 12474 [2021-07-09 18:52:20,965 INFO L226 Difference]: Without dead ends: 12404 [2021-07-09 18:52:20,966 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2813 ImplicationChecksByTransitivity, 1822.3ms TimeCoverageRelationStatistics Valid=667, Invalid=8075, Unknown=0, NotChecked=0, Total=8742 [2021-07-09 18:52:20,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12404 states. [2021-07-09 18:52:21,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12404 to 6611. [2021-07-09 18:52:21,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6611 states, 6610 states have (on average 3.4877458396369136) internal successors, (23054), 6610 states have internal predecessors, (23054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6611 states to 6611 states and 23054 transitions. [2021-07-09 18:52:21,103 INFO L78 Accepts]: Start accepts. Automaton has 6611 states and 23054 transitions. Word has length 39 [2021-07-09 18:52:21,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:52:21,103 INFO L482 AbstractCegarLoop]: Abstraction has 6611 states and 23054 transitions. [2021-07-09 18:52:21,103 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:21,103 INFO L276 IsEmpty]: Start isEmpty. Operand 6611 states and 23054 transitions. [2021-07-09 18:52:21,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:52:21,112 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:52:21,113 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:52:21,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-07-09 18:52:21,113 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:52:21,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:52:21,113 INFO L82 PathProgramCache]: Analyzing trace with hash -661472822, now seen corresponding path program 145 times [2021-07-09 18:52:21,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:52:21,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943282271] [2021-07-09 18:52:21,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:52:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:52:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:52:21,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:52:21,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943282271] [2021-07-09 18:52:21,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943282271] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:52:21,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:52:21,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:52:21,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625927396] [2021-07-09 18:52:21,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:52:21,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:52:21,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:52:21,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:52:21,288 INFO L87 Difference]: Start difference. First operand 6611 states and 23054 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:25,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:52:25,968 INFO L93 Difference]: Finished difference Result 13395 states and 45264 transitions. [2021-07-09 18:52:25,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-07-09 18:52:25,968 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:52:25,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:52:25,996 INFO L225 Difference]: With dead ends: 13395 [2021-07-09 18:52:25,996 INFO L226 Difference]: Without dead ends: 13235 [2021-07-09 18:52:25,998 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5698 ImplicationChecksByTransitivity, 2754.1ms TimeCoverageRelationStatistics Valid=1045, Invalid=14705, Unknown=0, NotChecked=0, Total=15750 [2021-07-09 18:52:26,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13235 states. [2021-07-09 18:52:26,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13235 to 6612. [2021-07-09 18:52:26,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6612 states, 6611 states have (on average 3.4881258508546362) internal successors, (23060), 6611 states have internal predecessors, (23060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:26,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6612 states to 6612 states and 23060 transitions. [2021-07-09 18:52:26,170 INFO L78 Accepts]: Start accepts. Automaton has 6612 states and 23060 transitions. Word has length 39 [2021-07-09 18:52:26,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:52:26,170 INFO L482 AbstractCegarLoop]: Abstraction has 6612 states and 23060 transitions. [2021-07-09 18:52:26,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:26,170 INFO L276 IsEmpty]: Start isEmpty. Operand 6612 states and 23060 transitions. [2021-07-09 18:52:26,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:52:26,180 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:52:26,180 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:52:26,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-07-09 18:52:26,180 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:52:26,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:52:26,180 INFO L82 PathProgramCache]: Analyzing trace with hash 2096075244, now seen corresponding path program 146 times [2021-07-09 18:52:26,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:52:26,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906050732] [2021-07-09 18:52:26,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:52:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:52:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:52:26,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:52:26,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906050732] [2021-07-09 18:52:26,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906050732] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:52:26,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:52:26,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:52:26,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070400231] [2021-07-09 18:52:26,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:52:26,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:52:26,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:52:26,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:52:26,356 INFO L87 Difference]: Start difference. First operand 6612 states and 23060 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:29,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:52:29,223 INFO L93 Difference]: Finished difference Result 11771 states and 40218 transitions. [2021-07-09 18:52:29,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-07-09 18:52:29,223 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:52:29,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:52:29,250 INFO L225 Difference]: With dead ends: 11771 [2021-07-09 18:52:29,251 INFO L226 Difference]: Without dead ends: 11728 [2021-07-09 18:52:29,251 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2135 ImplicationChecksByTransitivity, 1465.1ms TimeCoverageRelationStatistics Valid=518, Invalid=6454, Unknown=0, NotChecked=0, Total=6972 [2021-07-09 18:52:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11728 states. [2021-07-09 18:52:29,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11728 to 6627. [2021-07-09 18:52:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6627 states, 6626 states have (on average 3.4858134621189256) internal successors, (23097), 6626 states have internal predecessors, (23097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:29,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6627 states to 6627 states and 23097 transitions. [2021-07-09 18:52:29,439 INFO L78 Accepts]: Start accepts. Automaton has 6627 states and 23097 transitions. Word has length 39 [2021-07-09 18:52:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:52:29,439 INFO L482 AbstractCegarLoop]: Abstraction has 6627 states and 23097 transitions. [2021-07-09 18:52:29,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 6627 states and 23097 transitions. [2021-07-09 18:52:29,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:52:29,450 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:52:29,450 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:52:29,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-07-09 18:52:29,450 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:52:29,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:52:29,450 INFO L82 PathProgramCache]: Analyzing trace with hash -448784916, now seen corresponding path program 147 times [2021-07-09 18:52:29,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:52:29,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274445179] [2021-07-09 18:52:29,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:52:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:52:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:52:29,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:52:29,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274445179] [2021-07-09 18:52:29,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274445179] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:52:29,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:52:29,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:52:29,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595044425] [2021-07-09 18:52:29,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:52:29,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:52:29,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:52:29,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:52:29,629 INFO L87 Difference]: Start difference. First operand 6627 states and 23097 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:32,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:52:32,261 INFO L93 Difference]: Finished difference Result 10795 states and 37107 transitions. [2021-07-09 18:52:32,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-07-09 18:52:32,261 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:52:32,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:52:32,283 INFO L225 Difference]: With dead ends: 10795 [2021-07-09 18:52:32,283 INFO L226 Difference]: Without dead ends: 10683 [2021-07-09 18:52:32,283 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 1377.6ms TimeCoverageRelationStatistics Valid=464, Invalid=5542, Unknown=0, NotChecked=0, Total=6006 [2021-07-09 18:52:32,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10683 states. [2021-07-09 18:52:32,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10683 to 6624. [2021-07-09 18:52:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6624 states, 6623 states have (on average 3.486637475464291) internal successors, (23092), 6623 states have internal predecessors, (23092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:32,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6624 states to 6624 states and 23092 transitions. [2021-07-09 18:52:32,413 INFO L78 Accepts]: Start accepts. Automaton has 6624 states and 23092 transitions. Word has length 39 [2021-07-09 18:52:32,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:52:32,413 INFO L482 AbstractCegarLoop]: Abstraction has 6624 states and 23092 transitions. [2021-07-09 18:52:32,413 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:32,413 INFO L276 IsEmpty]: Start isEmpty. Operand 6624 states and 23092 transitions. [2021-07-09 18:52:32,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:52:32,422 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:52:32,422 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:52:32,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-07-09 18:52:32,423 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:52:32,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:52:32,423 INFO L82 PathProgramCache]: Analyzing trace with hash 168433486, now seen corresponding path program 148 times [2021-07-09 18:52:32,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:52:32,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89079045] [2021-07-09 18:52:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:52:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:52:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:52:32,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:52:32,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89079045] [2021-07-09 18:52:32,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89079045] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:52:32,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:52:32,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:52:32,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866676175] [2021-07-09 18:52:32,597 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:52:32,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:52:32,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:52:32,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:52:32,597 INFO L87 Difference]: Start difference. First operand 6624 states and 23092 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:36,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:52:36,063 INFO L93 Difference]: Finished difference Result 12608 states and 42790 transitions. [2021-07-09 18:52:36,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-07-09 18:52:36,063 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:52:36,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:52:36,089 INFO L225 Difference]: With dead ends: 12608 [2021-07-09 18:52:36,089 INFO L226 Difference]: Without dead ends: 12451 [2021-07-09 18:52:36,090 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3040 ImplicationChecksByTransitivity, 1846.8ms TimeCoverageRelationStatistics Valid=680, Invalid=8632, Unknown=0, NotChecked=0, Total=9312 [2021-07-09 18:52:36,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12451 states. [2021-07-09 18:52:36,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12451 to 6521. [2021-07-09 18:52:36,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6521 states, 6520 states have (on average 3.488036809815951) internal successors, (22742), 6520 states have internal predecessors, (22742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6521 states to 6521 states and 22742 transitions. [2021-07-09 18:52:36,235 INFO L78 Accepts]: Start accepts. Automaton has 6521 states and 22742 transitions. Word has length 39 [2021-07-09 18:52:36,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:52:36,235 INFO L482 AbstractCegarLoop]: Abstraction has 6521 states and 22742 transitions. [2021-07-09 18:52:36,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:36,235 INFO L276 IsEmpty]: Start isEmpty. Operand 6521 states and 22742 transitions. [2021-07-09 18:52:36,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:52:36,275 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:52:36,275 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:52:36,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-07-09 18:52:36,275 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:52:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:52:36,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1847250714, now seen corresponding path program 149 times [2021-07-09 18:52:36,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:52:36,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136230019] [2021-07-09 18:52:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:52:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:52:36,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:52:36,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:52:36,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136230019] [2021-07-09 18:52:36,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136230019] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:52:36,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:52:36,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:52:36,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679733242] [2021-07-09 18:52:36,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:52:36,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:52:36,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:52:36,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:52:36,437 INFO L87 Difference]: Start difference. First operand 6521 states and 22742 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:39,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:52:39,438 INFO L93 Difference]: Finished difference Result 12209 states and 41733 transitions. [2021-07-09 18:52:39,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-07-09 18:52:39,438 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:52:39,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:52:39,463 INFO L225 Difference]: With dead ends: 12209 [2021-07-09 18:52:39,463 INFO L226 Difference]: Without dead ends: 12133 [2021-07-09 18:52:39,464 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2389 ImplicationChecksByTransitivity, 1602.0ms TimeCoverageRelationStatistics Valid=590, Invalid=6892, Unknown=0, NotChecked=0, Total=7482 [2021-07-09 18:52:39,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12133 states. [2021-07-09 18:52:39,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12133 to 6535. [2021-07-09 18:52:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6535 states, 6534 states have (on average 3.485154576063667) internal successors, (22772), 6534 states have internal predecessors, (22772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:39,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6535 states to 6535 states and 22772 transitions. [2021-07-09 18:52:39,608 INFO L78 Accepts]: Start accepts. Automaton has 6535 states and 22772 transitions. Word has length 39 [2021-07-09 18:52:39,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:52:39,608 INFO L482 AbstractCegarLoop]: Abstraction has 6535 states and 22772 transitions. [2021-07-09 18:52:39,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:39,608 INFO L276 IsEmpty]: Start isEmpty. Operand 6535 states and 22772 transitions. [2021-07-09 18:52:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:52:39,617 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:52:39,617 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:52:39,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-07-09 18:52:39,617 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:52:39,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:52:39,618 INFO L82 PathProgramCache]: Analyzing trace with hash 899794248, now seen corresponding path program 150 times [2021-07-09 18:52:39,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:52:39,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085905523] [2021-07-09 18:52:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:52:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:52:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:52:39,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:52:39,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085905523] [2021-07-09 18:52:39,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085905523] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:52:39,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:52:39,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:52:39,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670103932] [2021-07-09 18:52:39,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:52:39,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:52:39,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:52:39,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:52:39,838 INFO L87 Difference]: Start difference. First operand 6535 states and 22772 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:43,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:52:43,262 INFO L93 Difference]: Finished difference Result 12365 states and 42153 transitions. [2021-07-09 18:52:43,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-07-09 18:52:43,262 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:52:43,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:52:43,287 INFO L225 Difference]: With dead ends: 12365 [2021-07-09 18:52:43,287 INFO L226 Difference]: Without dead ends: 12274 [2021-07-09 18:52:43,287 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 1814.4ms TimeCoverageRelationStatistics Valid=645, Invalid=7911, Unknown=0, NotChecked=0, Total=8556 [2021-07-09 18:52:43,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12274 states. [2021-07-09 18:52:43,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12274 to 6511. [2021-07-09 18:52:43,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6511 states, 6510 states have (on average 3.489554531490015) internal successors, (22717), 6510 states have internal predecessors, (22717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6511 states to 6511 states and 22717 transitions. [2021-07-09 18:52:43,457 INFO L78 Accepts]: Start accepts. Automaton has 6511 states and 22717 transitions. Word has length 39 [2021-07-09 18:52:43,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:52:43,457 INFO L482 AbstractCegarLoop]: Abstraction has 6511 states and 22717 transitions. [2021-07-09 18:52:43,457 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:43,457 INFO L276 IsEmpty]: Start isEmpty. Operand 6511 states and 22717 transitions. [2021-07-09 18:52:43,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:52:43,467 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:52:43,467 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:52:43,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-07-09 18:52:43,467 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:52:43,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:52:43,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1079910134, now seen corresponding path program 151 times [2021-07-09 18:52:43,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:52:43,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992459519] [2021-07-09 18:52:43,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:52:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:52:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:52:43,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:52:43,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992459519] [2021-07-09 18:52:43,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992459519] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:52:43,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:52:43,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:52:43,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158680706] [2021-07-09 18:52:43,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:52:43,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:52:43,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:52:43,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:52:43,644 INFO L87 Difference]: Start difference. First operand 6511 states and 22717 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:47,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:52:47,519 INFO L93 Difference]: Finished difference Result 13797 states and 46865 transitions. [2021-07-09 18:52:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-07-09 18:52:47,520 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:52:47,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:52:47,547 INFO L225 Difference]: With dead ends: 13797 [2021-07-09 18:52:47,547 INFO L226 Difference]: Without dead ends: 13624 [2021-07-09 18:52:47,547 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3858 ImplicationChecksByTransitivity, 2084.9ms TimeCoverageRelationStatistics Valid=808, Invalid=10534, Unknown=0, NotChecked=0, Total=11342 [2021-07-09 18:52:47,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13624 states. [2021-07-09 18:52:47,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13624 to 6571. [2021-07-09 18:52:47,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6571 states, 6570 states have (on average 3.4881278538812786) internal successors, (22917), 6570 states have internal predecessors, (22917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6571 states to 6571 states and 22917 transitions. [2021-07-09 18:52:47,691 INFO L78 Accepts]: Start accepts. Automaton has 6571 states and 22917 transitions. Word has length 39 [2021-07-09 18:52:47,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:52:47,691 INFO L482 AbstractCegarLoop]: Abstraction has 6571 states and 22917 transitions. [2021-07-09 18:52:47,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:47,691 INFO L276 IsEmpty]: Start isEmpty. Operand 6571 states and 22917 transitions. [2021-07-09 18:52:47,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:52:47,701 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:52:47,701 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:52:47,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-07-09 18:52:47,701 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:52:47,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:52:47,701 INFO L82 PathProgramCache]: Analyzing trace with hash 92742088, now seen corresponding path program 152 times [2021-07-09 18:52:47,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:52:47,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017771103] [2021-07-09 18:52:47,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:52:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:52:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:52:47,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:52:47,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017771103] [2021-07-09 18:52:47,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017771103] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:52:47,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:52:47,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:52:47,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835688940] [2021-07-09 18:52:47,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:52:47,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:52:47,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:52:47,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:52:47,889 INFO L87 Difference]: Start difference. First operand 6571 states and 22917 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:52,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:52:52,008 INFO L93 Difference]: Finished difference Result 14359 states and 48671 transitions. [2021-07-09 18:52:52,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-07-09 18:52:52,009 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:52:52,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:52:52,037 INFO L225 Difference]: With dead ends: 14359 [2021-07-09 18:52:52,037 INFO L226 Difference]: Without dead ends: 14178 [2021-07-09 18:52:52,038 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4390 ImplicationChecksByTransitivity, 2333.2ms TimeCoverageRelationStatistics Valid=900, Invalid=11756, Unknown=0, NotChecked=0, Total=12656 [2021-07-09 18:52:52,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14178 states. [2021-07-09 18:52:52,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14178 to 6676. [2021-07-09 18:52:52,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6676 states, 6675 states have (on average 3.4885393258426967) internal successors, (23286), 6675 states have internal predecessors, (23286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:52,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6676 states to 6676 states and 23286 transitions. [2021-07-09 18:52:52,189 INFO L78 Accepts]: Start accepts. Automaton has 6676 states and 23286 transitions. Word has length 39 [2021-07-09 18:52:52,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:52:52,189 INFO L482 AbstractCegarLoop]: Abstraction has 6676 states and 23286 transitions. [2021-07-09 18:52:52,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:52,189 INFO L276 IsEmpty]: Start isEmpty. Operand 6676 states and 23286 transitions. [2021-07-09 18:52:52,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:52:52,199 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:52:52,199 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:52:52,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-07-09 18:52:52,199 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:52:52,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:52:52,199 INFO L82 PathProgramCache]: Analyzing trace with hash 24997208, now seen corresponding path program 153 times [2021-07-09 18:52:52,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:52:52,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939826449] [2021-07-09 18:52:52,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:52:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:52:52,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:52:52,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:52:52,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939826449] [2021-07-09 18:52:52,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939826449] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:52:52,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:52:52,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:52:52,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995309318] [2021-07-09 18:52:52,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:52:52,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:52:52,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:52:52,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:52:52,373 INFO L87 Difference]: Start difference. First operand 6676 states and 23286 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:56,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:52:56,137 INFO L93 Difference]: Finished difference Result 13824 states and 46990 transitions. [2021-07-09 18:52:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-07-09 18:52:56,137 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:52:56,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:52:56,165 INFO L225 Difference]: With dead ends: 13824 [2021-07-09 18:52:56,165 INFO L226 Difference]: Without dead ends: 13690 [2021-07-09 18:52:56,165 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 2040.3ms TimeCoverageRelationStatistics Valid=786, Invalid=10344, Unknown=0, NotChecked=0, Total=11130 [2021-07-09 18:52:56,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13690 states. [2021-07-09 18:52:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13690 to 6675. [2021-07-09 18:52:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6675 states, 6674 states have (on average 3.488163020677255) internal successors, (23280), 6674 states have internal predecessors, (23280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:56,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6675 states to 6675 states and 23280 transitions. [2021-07-09 18:52:56,315 INFO L78 Accepts]: Start accepts. Automaton has 6675 states and 23280 transitions. Word has length 39 [2021-07-09 18:52:56,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:52:56,315 INFO L482 AbstractCegarLoop]: Abstraction has 6675 states and 23280 transitions. [2021-07-09 18:52:56,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:52:56,315 INFO L276 IsEmpty]: Start isEmpty. Operand 6675 states and 23280 transitions. [2021-07-09 18:52:56,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:52:56,325 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:52:56,325 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:52:56,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-07-09 18:52:56,325 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:52:56,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:52:56,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1902644550, now seen corresponding path program 154 times [2021-07-09 18:52:56,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:52:56,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740588892] [2021-07-09 18:52:56,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:52:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:52:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:52:56,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:52:56,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740588892] [2021-07-09 18:52:56,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740588892] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:52:56,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:52:56,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:52:56,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207146624] [2021-07-09 18:52:56,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:52:56,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:52:56,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:52:56,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:52:56,499 INFO L87 Difference]: Start difference. First operand 6675 states and 23280 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:00,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:00,574 INFO L93 Difference]: Finished difference Result 14374 states and 48713 transitions. [2021-07-09 18:53:00,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-07-09 18:53:00,574 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:00,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:00,604 INFO L225 Difference]: With dead ends: 14374 [2021-07-09 18:53:00,605 INFO L226 Difference]: Without dead ends: 14206 [2021-07-09 18:53:00,605 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4398 ImplicationChecksByTransitivity, 2285.4ms TimeCoverageRelationStatistics Valid=882, Invalid=11774, Unknown=0, NotChecked=0, Total=12656 [2021-07-09 18:53:00,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14206 states. [2021-07-09 18:53:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14206 to 6559. [2021-07-09 18:53:00,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6559 states, 6558 states have (on average 3.489021043000915) internal successors, (22881), 6558 states have internal predecessors, (22881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:00,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6559 states to 6559 states and 22881 transitions. [2021-07-09 18:53:00,760 INFO L78 Accepts]: Start accepts. Automaton has 6559 states and 22881 transitions. Word has length 39 [2021-07-09 18:53:00,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:00,760 INFO L482 AbstractCegarLoop]: Abstraction has 6559 states and 22881 transitions. [2021-07-09 18:53:00,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:00,760 INFO L276 IsEmpty]: Start isEmpty. Operand 6559 states and 22881 transitions. [2021-07-09 18:53:00,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:00,770 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:00,770 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:00,770 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-07-09 18:53:00,770 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:00,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:00,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1012800064, now seen corresponding path program 155 times [2021-07-09 18:53:00,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:00,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505871093] [2021-07-09 18:53:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:00,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:00,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:00,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505871093] [2021-07-09 18:53:00,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505871093] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:00,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:00,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:00,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989668826] [2021-07-09 18:53:00,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:00,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:00,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:00,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:00,951 INFO L87 Difference]: Start difference. First operand 6559 states and 22881 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:02,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:02,574 INFO L93 Difference]: Finished difference Result 9304 states and 32116 transitions. [2021-07-09 18:53:02,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 18:53:02,575 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:02,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:02,594 INFO L225 Difference]: With dead ends: 9304 [2021-07-09 18:53:02,594 INFO L226 Difference]: Without dead ends: 9237 [2021-07-09 18:53:02,594 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 814.5ms TimeCoverageRelationStatistics Valid=270, Invalid=2592, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:53:02,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9237 states. [2021-07-09 18:53:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9237 to 6779. [2021-07-09 18:53:02,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6779 states, 6778 states have (on average 3.487606963706108) internal successors, (23639), 6778 states have internal predecessors, (23639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6779 states to 6779 states and 23639 transitions. [2021-07-09 18:53:02,722 INFO L78 Accepts]: Start accepts. Automaton has 6779 states and 23639 transitions. Word has length 39 [2021-07-09 18:53:02,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:02,722 INFO L482 AbstractCegarLoop]: Abstraction has 6779 states and 23639 transitions. [2021-07-09 18:53:02,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:02,722 INFO L276 IsEmpty]: Start isEmpty. Operand 6779 states and 23639 transitions. [2021-07-09 18:53:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:02,733 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:02,733 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:02,733 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-07-09 18:53:02,733 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:02,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:02,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1388518690, now seen corresponding path program 156 times [2021-07-09 18:53:02,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:02,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887874836] [2021-07-09 18:53:02,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:02,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:02,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887874836] [2021-07-09 18:53:02,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887874836] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:02,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:02,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:02,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994320267] [2021-07-09 18:53:02,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:02,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:02,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:02,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:02,913 INFO L87 Difference]: Start difference. First operand 6779 states and 23639 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:04,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:04,483 INFO L93 Difference]: Finished difference Result 9244 states and 31928 transitions. [2021-07-09 18:53:04,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 18:53:04,483 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:04,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:04,502 INFO L225 Difference]: With dead ends: 9244 [2021-07-09 18:53:04,502 INFO L226 Difference]: Without dead ends: 9181 [2021-07-09 18:53:04,502 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 827.7ms TimeCoverageRelationStatistics Valid=271, Invalid=2485, Unknown=0, NotChecked=0, Total=2756 [2021-07-09 18:53:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9181 states. [2021-07-09 18:53:04,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9181 to 6771. [2021-07-09 18:53:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6771 states, 6770 states have (on average 3.4881831610044314) internal successors, (23615), 6770 states have internal predecessors, (23615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:04,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6771 states to 6771 states and 23615 transitions. [2021-07-09 18:53:04,628 INFO L78 Accepts]: Start accepts. Automaton has 6771 states and 23615 transitions. Word has length 39 [2021-07-09 18:53:04,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:04,628 INFO L482 AbstractCegarLoop]: Abstraction has 6771 states and 23615 transitions. [2021-07-09 18:53:04,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 6771 states and 23615 transitions. [2021-07-09 18:53:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:04,639 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:04,639 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:04,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-07-09 18:53:04,640 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:04,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:04,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1165161074, now seen corresponding path program 157 times [2021-07-09 18:53:04,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:04,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708607153] [2021-07-09 18:53:04,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:04,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:04,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708607153] [2021-07-09 18:53:04,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708607153] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:04,815 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:04,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:04,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135173563] [2021-07-09 18:53:04,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:04,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:04,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:04,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:04,816 INFO L87 Difference]: Start difference. First operand 6771 states and 23615 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:07,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:07,150 INFO L93 Difference]: Finished difference Result 10467 states and 36092 transitions. [2021-07-09 18:53:07,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-07-09 18:53:07,150 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:07,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:07,172 INFO L225 Difference]: With dead ends: 10467 [2021-07-09 18:53:07,173 INFO L226 Difference]: Without dead ends: 10424 [2021-07-09 18:53:07,173 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 1385.6ms TimeCoverageRelationStatistics Valid=482, Invalid=5524, Unknown=0, NotChecked=0, Total=6006 [2021-07-09 18:53:07,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10424 states. [2021-07-09 18:53:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10424 to 6983. [2021-07-09 18:53:07,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6983 states, 6982 states have (on average 3.4925522772844455) internal successors, (24385), 6982 states have internal predecessors, (24385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:07,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6983 states to 6983 states and 24385 transitions. [2021-07-09 18:53:07,311 INFO L78 Accepts]: Start accepts. Automaton has 6983 states and 24385 transitions. Word has length 39 [2021-07-09 18:53:07,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:07,311 INFO L482 AbstractCegarLoop]: Abstraction has 6983 states and 24385 transitions. [2021-07-09 18:53:07,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:07,311 INFO L276 IsEmpty]: Start isEmpty. Operand 6983 states and 24385 transitions. [2021-07-09 18:53:07,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:07,321 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:07,321 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:07,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-07-09 18:53:07,322 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:07,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:07,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1349207920, now seen corresponding path program 158 times [2021-07-09 18:53:07,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:07,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801557369] [2021-07-09 18:53:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:07,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:07,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801557369] [2021-07-09 18:53:07,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801557369] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:07,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:07,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:07,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400591961] [2021-07-09 18:53:07,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:07,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:07,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:07,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:07,497 INFO L87 Difference]: Start difference. First operand 6983 states and 24385 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:10,197 INFO L93 Difference]: Finished difference Result 11670 states and 40166 transitions. [2021-07-09 18:53:10,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-07-09 18:53:10,197 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:10,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:10,225 INFO L225 Difference]: With dead ends: 11670 [2021-07-09 18:53:10,226 INFO L226 Difference]: Without dead ends: 11606 [2021-07-09 18:53:10,227 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 1550.4ms TimeCoverageRelationStatistics Valid=531, Invalid=6609, Unknown=0, NotChecked=0, Total=7140 [2021-07-09 18:53:10,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11606 states. [2021-07-09 18:53:10,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11606 to 6899. [2021-07-09 18:53:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6899 states, 6898 states have (on average 3.4956509133082054) internal successors, (24113), 6898 states have internal predecessors, (24113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:10,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6899 states to 6899 states and 24113 transitions. [2021-07-09 18:53:10,414 INFO L78 Accepts]: Start accepts. Automaton has 6899 states and 24113 transitions. Word has length 39 [2021-07-09 18:53:10,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:10,414 INFO L482 AbstractCegarLoop]: Abstraction has 6899 states and 24113 transitions. [2021-07-09 18:53:10,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:10,414 INFO L276 IsEmpty]: Start isEmpty. Operand 6899 states and 24113 transitions. [2021-07-09 18:53:10,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:10,426 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:10,426 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:10,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-07-09 18:53:10,426 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:10,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:10,426 INFO L82 PathProgramCache]: Analyzing trace with hash -246677504, now seen corresponding path program 159 times [2021-07-09 18:53:10,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:10,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066617556] [2021-07-09 18:53:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:10,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:10,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066617556] [2021-07-09 18:53:10,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066617556] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:10,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:10,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:10,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729884450] [2021-07-09 18:53:10,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:10,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:10,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:10,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:10,623 INFO L87 Difference]: Start difference. First operand 6899 states and 24113 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:12,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:12,281 INFO L93 Difference]: Finished difference Result 9487 states and 32701 transitions. [2021-07-09 18:53:12,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-09 18:53:12,281 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:12,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:12,303 INFO L225 Difference]: With dead ends: 9487 [2021-07-09 18:53:12,303 INFO L226 Difference]: Without dead ends: 9432 [2021-07-09 18:53:12,303 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 901.8ms TimeCoverageRelationStatistics Valid=305, Invalid=2775, Unknown=0, NotChecked=0, Total=3080 [2021-07-09 18:53:12,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9432 states. [2021-07-09 18:53:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9432 to 6901. [2021-07-09 18:53:12,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6901 states, 6900 states have (on average 3.495072463768116) internal successors, (24116), 6900 states have internal predecessors, (24116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:12,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6901 states to 6901 states and 24116 transitions. [2021-07-09 18:53:12,465 INFO L78 Accepts]: Start accepts. Automaton has 6901 states and 24116 transitions. Word has length 39 [2021-07-09 18:53:12,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:12,465 INFO L482 AbstractCegarLoop]: Abstraction has 6901 states and 24116 transitions. [2021-07-09 18:53:12,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:12,465 INFO L276 IsEmpty]: Start isEmpty. Operand 6901 states and 24116 transitions. [2021-07-09 18:53:12,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:12,477 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:12,477 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:12,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-07-09 18:53:12,477 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:12,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:12,477 INFO L82 PathProgramCache]: Analyzing trace with hash 925974718, now seen corresponding path program 160 times [2021-07-09 18:53:12,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:12,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915570809] [2021-07-09 18:53:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:12,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:12,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915570809] [2021-07-09 18:53:12,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915570809] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:12,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:12,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:12,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073920649] [2021-07-09 18:53:12,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:12,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:12,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:12,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:12,656 INFO L87 Difference]: Start difference. First operand 6901 states and 24116 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:14,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:14,575 INFO L93 Difference]: Finished difference Result 10611 states and 36548 transitions. [2021-07-09 18:53:14,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-09 18:53:14,575 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:14,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:14,598 INFO L225 Difference]: With dead ends: 10611 [2021-07-09 18:53:14,599 INFO L226 Difference]: Without dead ends: 10565 [2021-07-09 18:53:14,599 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 962.6ms TimeCoverageRelationStatistics Valid=325, Invalid=3215, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 18:53:14,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10565 states. [2021-07-09 18:53:14,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10565 to 6905. [2021-07-09 18:53:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6905 states, 6904 states have (on average 3.4942062572421784) internal successors, (24124), 6904 states have internal predecessors, (24124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:14,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6905 states to 6905 states and 24124 transitions. [2021-07-09 18:53:14,750 INFO L78 Accepts]: Start accepts. Automaton has 6905 states and 24124 transitions. Word has length 39 [2021-07-09 18:53:14,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:14,750 INFO L482 AbstractCegarLoop]: Abstraction has 6905 states and 24124 transitions. [2021-07-09 18:53:14,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand 6905 states and 24124 transitions. [2021-07-09 18:53:14,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:14,762 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:14,762 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:14,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-07-09 18:53:14,762 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:14,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:14,762 INFO L82 PathProgramCache]: Analyzing trace with hash 678508556, now seen corresponding path program 161 times [2021-07-09 18:53:14,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:14,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065792619] [2021-07-09 18:53:14,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:14,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:14,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065792619] [2021-07-09 18:53:14,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065792619] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:14,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:14,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:14,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61743103] [2021-07-09 18:53:14,942 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:14,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:14,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:14,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:14,942 INFO L87 Difference]: Start difference. First operand 6905 states and 24124 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:16,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:16,678 INFO L93 Difference]: Finished difference Result 9531 states and 32885 transitions. [2021-07-09 18:53:16,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 18:53:16,679 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:16,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:16,700 INFO L225 Difference]: With dead ends: 9531 [2021-07-09 18:53:16,700 INFO L226 Difference]: Without dead ends: 9478 [2021-07-09 18:53:16,700 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 956.8ms TimeCoverageRelationStatistics Valid=305, Invalid=2775, Unknown=0, NotChecked=0, Total=3080 [2021-07-09 18:53:16,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9478 states. [2021-07-09 18:53:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9478 to 6895. [2021-07-09 18:53:16,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6895 states, 6894 states have (on average 3.496228604583696) internal successors, (24103), 6894 states have internal predecessors, (24103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:16,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6895 states to 6895 states and 24103 transitions. [2021-07-09 18:53:16,840 INFO L78 Accepts]: Start accepts. Automaton has 6895 states and 24103 transitions. Word has length 39 [2021-07-09 18:53:16,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:16,840 INFO L482 AbstractCegarLoop]: Abstraction has 6895 states and 24103 transitions. [2021-07-09 18:53:16,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:16,840 INFO L276 IsEmpty]: Start isEmpty. Operand 6895 states and 24103 transitions. [2021-07-09 18:53:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:16,852 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:16,852 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:16,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-07-09 18:53:16,852 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:16,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:16,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1943410644, now seen corresponding path program 162 times [2021-07-09 18:53:16,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:16,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728439008] [2021-07-09 18:53:16,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:17,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:17,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728439008] [2021-07-09 18:53:17,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728439008] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:17,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:17,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:17,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358192121] [2021-07-09 18:53:17,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:17,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:17,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:17,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:17,032 INFO L87 Difference]: Start difference. First operand 6895 states and 24103 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:18,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:18,631 INFO L93 Difference]: Finished difference Result 9368 states and 32482 transitions. [2021-07-09 18:53:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-09 18:53:18,631 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:18,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:18,652 INFO L225 Difference]: With dead ends: 9368 [2021-07-09 18:53:18,652 INFO L226 Difference]: Without dead ends: 9301 [2021-07-09 18:53:18,652 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 783.9ms TimeCoverageRelationStatistics Valid=234, Invalid=2316, Unknown=0, NotChecked=0, Total=2550 [2021-07-09 18:53:18,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9301 states. [2021-07-09 18:53:18,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9301 to 6951. [2021-07-09 18:53:18,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6951 states, 6950 states have (on average 3.4913669064748203) internal successors, (24265), 6950 states have internal predecessors, (24265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6951 states to 6951 states and 24265 transitions. [2021-07-09 18:53:18,794 INFO L78 Accepts]: Start accepts. Automaton has 6951 states and 24265 transitions. Word has length 39 [2021-07-09 18:53:18,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:18,794 INFO L482 AbstractCegarLoop]: Abstraction has 6951 states and 24265 transitions. [2021-07-09 18:53:18,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:18,794 INFO L276 IsEmpty]: Start isEmpty. Operand 6951 states and 24265 transitions. [2021-07-09 18:53:18,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:18,806 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:18,806 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:18,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-07-09 18:53:18,806 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:18,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:18,806 INFO L82 PathProgramCache]: Analyzing trace with hash -49762102, now seen corresponding path program 163 times [2021-07-09 18:53:18,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:18,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975018804] [2021-07-09 18:53:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:18,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:18,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975018804] [2021-07-09 18:53:18,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975018804] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:18,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:18,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:18,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460760589] [2021-07-09 18:53:18,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:18,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:18,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:18,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:18,984 INFO L87 Difference]: Start difference. First operand 6951 states and 24265 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:20,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:20,524 INFO L93 Difference]: Finished difference Result 9404 states and 32566 transitions. [2021-07-09 18:53:20,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-09 18:53:20,524 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:20,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:20,546 INFO L225 Difference]: With dead ends: 9404 [2021-07-09 18:53:20,546 INFO L226 Difference]: Without dead ends: 9341 [2021-07-09 18:53:20,546 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 739.4ms TimeCoverageRelationStatistics Valid=238, Invalid=2212, Unknown=0, NotChecked=0, Total=2450 [2021-07-09 18:53:20,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2021-07-09 18:53:20,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 6983. [2021-07-09 18:53:20,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6983 states, 6982 states have (on average 3.487396161558293) internal successors, (24349), 6982 states have internal predecessors, (24349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6983 states to 6983 states and 24349 transitions. [2021-07-09 18:53:20,691 INFO L78 Accepts]: Start accepts. Automaton has 6983 states and 24349 transitions. Word has length 39 [2021-07-09 18:53:20,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:20,691 INFO L482 AbstractCegarLoop]: Abstraction has 6983 states and 24349 transitions. [2021-07-09 18:53:20,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 6983 states and 24349 transitions. [2021-07-09 18:53:20,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:20,703 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:20,703 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:20,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-07-09 18:53:20,703 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:20,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:20,704 INFO L82 PathProgramCache]: Analyzing trace with hash 14871404, now seen corresponding path program 164 times [2021-07-09 18:53:20,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:20,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172966325] [2021-07-09 18:53:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:20,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:20,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172966325] [2021-07-09 18:53:20,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172966325] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:20,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:20,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:20,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441332393] [2021-07-09 18:53:20,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:20,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:20,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:20,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:20,884 INFO L87 Difference]: Start difference. First operand 6983 states and 24349 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:22,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:22,444 INFO L93 Difference]: Finished difference Result 9387 states and 32540 transitions. [2021-07-09 18:53:22,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-09 18:53:22,445 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:22,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:22,465 INFO L225 Difference]: With dead ends: 9387 [2021-07-09 18:53:22,465 INFO L226 Difference]: Without dead ends: 9264 [2021-07-09 18:53:22,465 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 755.4ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-07-09 18:53:22,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9264 states. [2021-07-09 18:53:22,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9264 to 6951. [2021-07-09 18:53:22,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6951 states, 6950 states have (on average 3.489064748201439) internal successors, (24249), 6950 states have internal predecessors, (24249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6951 states to 6951 states and 24249 transitions. [2021-07-09 18:53:22,602 INFO L78 Accepts]: Start accepts. Automaton has 6951 states and 24249 transitions. Word has length 39 [2021-07-09 18:53:22,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:22,602 INFO L482 AbstractCegarLoop]: Abstraction has 6951 states and 24249 transitions. [2021-07-09 18:53:22,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand 6951 states and 24249 transitions. [2021-07-09 18:53:22,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:22,614 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:22,614 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:22,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-07-09 18:53:22,614 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:22,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:22,614 INFO L82 PathProgramCache]: Analyzing trace with hash 838477612, now seen corresponding path program 165 times [2021-07-09 18:53:22,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:22,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223581466] [2021-07-09 18:53:22,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:22,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:22,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223581466] [2021-07-09 18:53:22,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223581466] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:22,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:22,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:22,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778115671] [2021-07-09 18:53:22,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:22,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:22,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:22,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:22,792 INFO L87 Difference]: Start difference. First operand 6951 states and 24249 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:25,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:25,193 INFO L93 Difference]: Finished difference Result 10564 states and 36421 transitions. [2021-07-09 18:53:25,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-07-09 18:53:25,194 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:25,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:25,217 INFO L225 Difference]: With dead ends: 10564 [2021-07-09 18:53:25,217 INFO L226 Difference]: Without dead ends: 10458 [2021-07-09 18:53:25,218 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1773 ImplicationChecksByTransitivity, 1409.3ms TimeCoverageRelationStatistics Valid=485, Invalid=5521, Unknown=0, NotChecked=0, Total=6006 [2021-07-09 18:53:25,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10458 states. [2021-07-09 18:53:25,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10458 to 6978. [2021-07-09 18:53:25,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6978 states, 6977 states have (on average 3.486742152787731) internal successors, (24327), 6977 states have internal predecessors, (24327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:25,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6978 states to 6978 states and 24327 transitions. [2021-07-09 18:53:25,370 INFO L78 Accepts]: Start accepts. Automaton has 6978 states and 24327 transitions. Word has length 39 [2021-07-09 18:53:25,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:25,370 INFO L482 AbstractCegarLoop]: Abstraction has 6978 states and 24327 transitions. [2021-07-09 18:53:25,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:25,370 INFO L276 IsEmpty]: Start isEmpty. Operand 6978 states and 24327 transitions. [2021-07-09 18:53:25,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:25,381 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:25,381 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:25,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-07-09 18:53:25,382 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:25,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:25,382 INFO L82 PathProgramCache]: Analyzing trace with hash -942120690, now seen corresponding path program 166 times [2021-07-09 18:53:25,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:25,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322632562] [2021-07-09 18:53:25,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:25,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:25,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:25,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322632562] [2021-07-09 18:53:25,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322632562] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:25,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:25,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:25,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59548080] [2021-07-09 18:53:25,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:25,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:25,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:25,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:25,559 INFO L87 Difference]: Start difference. First operand 6978 states and 24327 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:28,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:28,295 INFO L93 Difference]: Finished difference Result 11735 states and 40418 transitions. [2021-07-09 18:53:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-07-09 18:53:28,296 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:28,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:28,323 INFO L225 Difference]: With dead ends: 11735 [2021-07-09 18:53:28,323 INFO L226 Difference]: Without dead ends: 11683 [2021-07-09 18:53:28,324 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2276 ImplicationChecksByTransitivity, 1565.8ms TimeCoverageRelationStatistics Valid=540, Invalid=6770, Unknown=0, NotChecked=0, Total=7310 [2021-07-09 18:53:28,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11683 states. [2021-07-09 18:53:28,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11683 to 6956. [2021-07-09 18:53:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6956 states, 6955 states have (on average 3.4869877785765637) internal successors, (24252), 6955 states have internal predecessors, (24252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6956 states to 6956 states and 24252 transitions. [2021-07-09 18:53:28,514 INFO L78 Accepts]: Start accepts. Automaton has 6956 states and 24252 transitions. Word has length 39 [2021-07-09 18:53:28,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:28,514 INFO L482 AbstractCegarLoop]: Abstraction has 6956 states and 24252 transitions. [2021-07-09 18:53:28,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 6956 states and 24252 transitions. [2021-07-09 18:53:28,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:28,525 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:28,525 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:28,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-07-09 18:53:28,525 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:28,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:28,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1756961182, now seen corresponding path program 167 times [2021-07-09 18:53:28,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:28,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522684860] [2021-07-09 18:53:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:28,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:28,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522684860] [2021-07-09 18:53:28,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522684860] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:28,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:28,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:28,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023787103] [2021-07-09 18:53:28,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:28,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:28,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:28,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:28,703 INFO L87 Difference]: Start difference. First operand 6956 states and 24252 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:30,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:30,312 INFO L93 Difference]: Finished difference Result 9517 states and 32824 transitions. [2021-07-09 18:53:30,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-09 18:53:30,312 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:30,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:30,335 INFO L225 Difference]: With dead ends: 9517 [2021-07-09 18:53:30,335 INFO L226 Difference]: Without dead ends: 9462 [2021-07-09 18:53:30,335 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 839.5ms TimeCoverageRelationStatistics Valid=289, Invalid=2573, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:53:30,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9462 states. [2021-07-09 18:53:30,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9462 to 6964. [2021-07-09 18:53:30,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6964 states, 6963 states have (on average 3.4864282636794486) internal successors, (24276), 6963 states have internal predecessors, (24276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6964 states to 6964 states and 24276 transitions. [2021-07-09 18:53:30,511 INFO L78 Accepts]: Start accepts. Automaton has 6964 states and 24276 transitions. Word has length 39 [2021-07-09 18:53:30,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:30,511 INFO L482 AbstractCegarLoop]: Abstraction has 6964 states and 24276 transitions. [2021-07-09 18:53:30,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:30,511 INFO L276 IsEmpty]: Start isEmpty. Operand 6964 states and 24276 transitions. [2021-07-09 18:53:30,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:30,523 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:30,523 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:30,523 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-07-09 18:53:30,523 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:30,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:30,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1365353892, now seen corresponding path program 168 times [2021-07-09 18:53:30,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:30,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325972380] [2021-07-09 18:53:30,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:30,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:30,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325972380] [2021-07-09 18:53:30,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325972380] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:30,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:30,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:30,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392508438] [2021-07-09 18:53:30,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:30,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:30,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:30,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:30,702 INFO L87 Difference]: Start difference. First operand 6964 states and 24276 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:32,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:32,633 INFO L93 Difference]: Finished difference Result 10709 states and 36828 transitions. [2021-07-09 18:53:32,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-07-09 18:53:32,633 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:32,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:32,656 INFO L225 Difference]: With dead ends: 10709 [2021-07-09 18:53:32,656 INFO L226 Difference]: Without dead ends: 10649 [2021-07-09 18:53:32,657 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1004.1ms TimeCoverageRelationStatistics Valid=323, Invalid=3217, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 18:53:32,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10649 states. [2021-07-09 18:53:32,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10649 to 6962. [2021-07-09 18:53:32,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6962 states, 6961 states have (on average 3.4867116793564144) internal successors, (24271), 6961 states have internal predecessors, (24271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:32,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6962 states to 6962 states and 24271 transitions. [2021-07-09 18:53:32,802 INFO L78 Accepts]: Start accepts. Automaton has 6962 states and 24271 transitions. Word has length 39 [2021-07-09 18:53:32,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:32,802 INFO L482 AbstractCegarLoop]: Abstraction has 6962 states and 24271 transitions. [2021-07-09 18:53:32,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:32,802 INFO L276 IsEmpty]: Start isEmpty. Operand 6962 states and 24271 transitions. [2021-07-09 18:53:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:32,813 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:32,813 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:32,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-07-09 18:53:32,814 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:32,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:32,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1052209802, now seen corresponding path program 169 times [2021-07-09 18:53:32,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:32,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857098140] [2021-07-09 18:53:32,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:32,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:32,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857098140] [2021-07-09 18:53:32,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857098140] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:32,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:32,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:32,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188182223] [2021-07-09 18:53:32,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:32,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:32,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:32,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:32,990 INFO L87 Difference]: Start difference. First operand 6962 states and 24271 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:34,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:34,593 INFO L93 Difference]: Finished difference Result 9486 states and 32778 transitions. [2021-07-09 18:53:34,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 18:53:34,593 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:34,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:34,614 INFO L225 Difference]: With dead ends: 9486 [2021-07-09 18:53:34,614 INFO L226 Difference]: Without dead ends: 9395 [2021-07-09 18:53:34,614 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 810.6ms TimeCoverageRelationStatistics Valid=271, Invalid=2485, Unknown=0, NotChecked=0, Total=2756 [2021-07-09 18:53:34,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9395 states. [2021-07-09 18:53:34,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9395 to 6962. [2021-07-09 18:53:34,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6962 states, 6961 states have (on average 3.4858497342335872) internal successors, (24265), 6961 states have internal predecessors, (24265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:34,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6962 states to 6962 states and 24265 transitions. [2021-07-09 18:53:34,756 INFO L78 Accepts]: Start accepts. Automaton has 6962 states and 24265 transitions. Word has length 39 [2021-07-09 18:53:34,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:34,756 INFO L482 AbstractCegarLoop]: Abstraction has 6962 states and 24265 transitions. [2021-07-09 18:53:34,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:34,756 INFO L276 IsEmpty]: Start isEmpty. Operand 6962 states and 24265 transitions. [2021-07-09 18:53:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:34,768 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:34,768 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:34,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-07-09 18:53:34,768 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:34,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:34,768 INFO L82 PathProgramCache]: Analyzing trace with hash -450272404, now seen corresponding path program 170 times [2021-07-09 18:53:34,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:34,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219427212] [2021-07-09 18:53:34,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:34,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:34,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:34,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219427212] [2021-07-09 18:53:34,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219427212] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:34,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:34,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:34,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232249771] [2021-07-09 18:53:34,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:34,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:34,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:34,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:34,944 INFO L87 Difference]: Start difference. First operand 6962 states and 24265 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:36,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:36,913 INFO L93 Difference]: Finished difference Result 10861 states and 37319 transitions. [2021-07-09 18:53:36,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-09 18:53:36,913 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:36,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:36,937 INFO L225 Difference]: With dead ends: 10861 [2021-07-09 18:53:36,937 INFO L226 Difference]: Without dead ends: 10660 [2021-07-09 18:53:36,937 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 955.0ms TimeCoverageRelationStatistics Valid=309, Invalid=3231, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 18:53:36,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10660 states. [2021-07-09 18:53:37,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10660 to 6982. [2021-07-09 18:53:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6982 states, 6981 states have (on average 3.484744305973356) internal successors, (24327), 6981 states have internal predecessors, (24327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6982 states to 6982 states and 24327 transitions. [2021-07-09 18:53:37,090 INFO L78 Accepts]: Start accepts. Automaton has 6982 states and 24327 transitions. Word has length 39 [2021-07-09 18:53:37,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:37,091 INFO L482 AbstractCegarLoop]: Abstraction has 6982 states and 24327 transitions. [2021-07-09 18:53:37,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:37,091 INFO L276 IsEmpty]: Start isEmpty. Operand 6982 states and 24327 transitions. [2021-07-09 18:53:37,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:37,102 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:37,102 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:37,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-07-09 18:53:37,102 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:37,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:37,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1049550434, now seen corresponding path program 171 times [2021-07-09 18:53:37,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:37,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382848832] [2021-07-09 18:53:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:37,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:37,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382848832] [2021-07-09 18:53:37,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382848832] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:37,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:37,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:37,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947127736] [2021-07-09 18:53:37,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:37,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:37,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:37,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:37,284 INFO L87 Difference]: Start difference. First operand 6982 states and 24327 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:39,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:39,073 INFO L93 Difference]: Finished difference Result 9601 states and 32947 transitions. [2021-07-09 18:53:39,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 18:53:39,073 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:39,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:39,093 INFO L225 Difference]: With dead ends: 9601 [2021-07-09 18:53:39,094 INFO L226 Difference]: Without dead ends: 9534 [2021-07-09 18:53:39,094 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 1001.4ms TimeCoverageRelationStatistics Valid=319, Invalid=3103, Unknown=0, NotChecked=0, Total=3422 [2021-07-09 18:53:39,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9534 states. [2021-07-09 18:53:39,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9534 to 7008. [2021-07-09 18:53:39,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7008 states, 7007 states have (on average 3.4840873412301985) internal successors, (24413), 7007 states have internal predecessors, (24413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 24413 transitions. [2021-07-09 18:53:39,238 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 24413 transitions. Word has length 39 [2021-07-09 18:53:39,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:39,238 INFO L482 AbstractCegarLoop]: Abstraction has 7008 states and 24413 transitions. [2021-07-09 18:53:39,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:39,238 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 24413 transitions. [2021-07-09 18:53:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:39,250 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:39,250 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:39,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-07-09 18:53:39,250 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:39,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:39,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1351768320, now seen corresponding path program 172 times [2021-07-09 18:53:39,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:39,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411547113] [2021-07-09 18:53:39,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:39,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:39,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:39,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411547113] [2021-07-09 18:53:39,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411547113] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:39,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:39,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:39,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098575439] [2021-07-09 18:53:39,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:39,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:39,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:39,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:39,435 INFO L87 Difference]: Start difference. First operand 7008 states and 24413 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:41,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:41,079 INFO L93 Difference]: Finished difference Result 9514 states and 32714 transitions. [2021-07-09 18:53:41,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 18:53:41,079 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:41,099 INFO L225 Difference]: With dead ends: 9514 [2021-07-09 18:53:41,100 INFO L226 Difference]: Without dead ends: 9451 [2021-07-09 18:53:41,100 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 913.6ms TimeCoverageRelationStatistics Valid=305, Invalid=2775, Unknown=0, NotChecked=0, Total=3080 [2021-07-09 18:53:41,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9451 states. [2021-07-09 18:53:41,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9451 to 7008. [2021-07-09 18:53:41,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7008 states, 7007 states have (on average 3.4835164835164836) internal successors, (24409), 7007 states have internal predecessors, (24409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 24409 transitions. [2021-07-09 18:53:41,242 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 24409 transitions. Word has length 39 [2021-07-09 18:53:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:41,242 INFO L482 AbstractCegarLoop]: Abstraction has 7008 states and 24409 transitions. [2021-07-09 18:53:41,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:41,242 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 24409 transitions. [2021-07-09 18:53:41,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:41,254 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:41,254 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:41,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-07-09 18:53:41,254 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:41,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:41,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1128410704, now seen corresponding path program 173 times [2021-07-09 18:53:41,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:41,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416875744] [2021-07-09 18:53:41,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:41,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:41,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:41,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416875744] [2021-07-09 18:53:41,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416875744] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:41,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:41,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:41,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516261687] [2021-07-09 18:53:41,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:41,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:41,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:41,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:41,432 INFO L87 Difference]: Start difference. First operand 7008 states and 24409 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:44,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:44,058 INFO L93 Difference]: Finished difference Result 10634 states and 36442 transitions. [2021-07-09 18:53:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-07-09 18:53:44,058 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:44,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:44,082 INFO L225 Difference]: With dead ends: 10634 [2021-07-09 18:53:44,082 INFO L226 Difference]: Without dead ends: 10591 [2021-07-09 18:53:44,083 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2336 ImplicationChecksByTransitivity, 1649.5ms TimeCoverageRelationStatistics Valid=592, Invalid=6890, Unknown=0, NotChecked=0, Total=7482 [2021-07-09 18:53:44,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10591 states. [2021-07-09 18:53:44,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10591 to 7018. [2021-07-09 18:53:44,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7018 states, 7017 states have (on average 3.4839675074818297) internal successors, (24447), 7017 states have internal predecessors, (24447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7018 states to 7018 states and 24447 transitions. [2021-07-09 18:53:44,238 INFO L78 Accepts]: Start accepts. Automaton has 7018 states and 24447 transitions. Word has length 39 [2021-07-09 18:53:44,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:44,238 INFO L482 AbstractCegarLoop]: Abstraction has 7018 states and 24447 transitions. [2021-07-09 18:53:44,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:44,239 INFO L276 IsEmpty]: Start isEmpty. Operand 7018 states and 24447 transitions. [2021-07-09 18:53:44,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:44,250 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:44,250 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:44,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-07-09 18:53:44,250 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:44,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:44,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1385958290, now seen corresponding path program 174 times [2021-07-09 18:53:44,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:44,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81367868] [2021-07-09 18:53:44,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:44,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:44,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81367868] [2021-07-09 18:53:44,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81367868] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:44,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:44,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:44,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212725138] [2021-07-09 18:53:44,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:44,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:44,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:44,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:44,461 INFO L87 Difference]: Start difference. First operand 7018 states and 24447 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:47,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:47,388 INFO L93 Difference]: Finished difference Result 11861 states and 40576 transitions. [2021-07-09 18:53:47,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-07-09 18:53:47,388 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:47,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:47,414 INFO L225 Difference]: With dead ends: 11861 [2021-07-09 18:53:47,414 INFO L226 Difference]: Without dead ends: 11809 [2021-07-09 18:53:47,415 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2834 ImplicationChecksByTransitivity, 1835.0ms TimeCoverageRelationStatistics Valid=639, Invalid=8103, Unknown=0, NotChecked=0, Total=8742 [2021-07-09 18:53:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11809 states. [2021-07-09 18:53:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11809 to 7014. [2021-07-09 18:53:47,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7014 states, 7013 states have (on average 3.4839583630400686) internal successors, (24433), 7013 states have internal predecessors, (24433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:47,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7014 states to 7014 states and 24433 transitions. [2021-07-09 18:53:47,575 INFO L78 Accepts]: Start accepts. Automaton has 7014 states and 24433 transitions. Word has length 39 [2021-07-09 18:53:47,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:47,575 INFO L482 AbstractCegarLoop]: Abstraction has 7014 states and 24433 transitions. [2021-07-09 18:53:47,575 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand 7014 states and 24433 transitions. [2021-07-09 18:53:47,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:47,586 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:47,586 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:47,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-07-09 18:53:47,586 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:47,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:47,587 INFO L82 PathProgramCache]: Analyzing trace with hash -209927134, now seen corresponding path program 175 times [2021-07-09 18:53:47,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:47,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212042157] [2021-07-09 18:53:47,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:47,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:47,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212042157] [2021-07-09 18:53:47,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212042157] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:47,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:47,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:47,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305957344] [2021-07-09 18:53:47,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:47,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:47,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:47,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:47,762 INFO L87 Difference]: Start difference. First operand 7014 states and 24433 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:49,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:49,491 INFO L93 Difference]: Finished difference Result 9608 states and 32926 transitions. [2021-07-09 18:53:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-09 18:53:49,491 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:49,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:49,512 INFO L225 Difference]: With dead ends: 9608 [2021-07-09 18:53:49,512 INFO L226 Difference]: Without dead ends: 9553 [2021-07-09 18:53:49,513 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 979.7ms TimeCoverageRelationStatistics Valid=339, Invalid=3083, Unknown=0, NotChecked=0, Total=3422 [2021-07-09 18:53:49,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9553 states. [2021-07-09 18:53:49,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9553 to 7016. [2021-07-09 18:53:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7015 states have (on average 3.4833927298645757) internal successors, (24436), 7015 states have internal predecessors, (24436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:49,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 24436 transitions. [2021-07-09 18:53:49,659 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 24436 transitions. Word has length 39 [2021-07-09 18:53:49,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:49,659 INFO L482 AbstractCegarLoop]: Abstraction has 7016 states and 24436 transitions. [2021-07-09 18:53:49,659 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:49,659 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 24436 transitions. [2021-07-09 18:53:49,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:49,671 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:49,671 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:49,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-07-09 18:53:49,671 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:49,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:49,671 INFO L82 PathProgramCache]: Analyzing trace with hash 962725088, now seen corresponding path program 176 times [2021-07-09 18:53:49,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:49,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047482967] [2021-07-09 18:53:49,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:49,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:49,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047482967] [2021-07-09 18:53:49,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047482967] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:49,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:49,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:49,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514097129] [2021-07-09 18:53:49,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:49,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:49,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:49,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:49,849 INFO L87 Difference]: Start difference. First operand 7016 states and 24436 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:51,820 INFO L93 Difference]: Finished difference Result 10732 states and 36773 transitions. [2021-07-09 18:53:51,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-07-09 18:53:51,820 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:51,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:51,844 INFO L225 Difference]: With dead ends: 10732 [2021-07-09 18:53:51,844 INFO L226 Difference]: Without dead ends: 10686 [2021-07-09 18:53:51,845 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 1092.1ms TimeCoverageRelationStatistics Valid=356, Invalid=3550, Unknown=0, NotChecked=0, Total=3906 [2021-07-09 18:53:51,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10686 states. [2021-07-09 18:53:51,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10686 to 7020. [2021-07-09 18:53:51,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7020 states, 7019 states have (on average 3.4825473714204302) internal successors, (24444), 7019 states have internal predecessors, (24444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7020 states to 7020 states and 24444 transitions. [2021-07-09 18:53:52,001 INFO L78 Accepts]: Start accepts. Automaton has 7020 states and 24444 transitions. Word has length 39 [2021-07-09 18:53:52,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:52,002 INFO L482 AbstractCegarLoop]: Abstraction has 7020 states and 24444 transitions. [2021-07-09 18:53:52,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 7020 states and 24444 transitions. [2021-07-09 18:53:52,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:52,013 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:52,013 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:52,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-07-09 18:53:52,013 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:52,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:52,013 INFO L82 PathProgramCache]: Analyzing trace with hash 715258926, now seen corresponding path program 177 times [2021-07-09 18:53:52,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:52,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379578019] [2021-07-09 18:53:52,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:52,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:52,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379578019] [2021-07-09 18:53:52,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379578019] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:52,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:52,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:52,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787479478] [2021-07-09 18:53:52,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:52,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:52,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:52,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:52,189 INFO L87 Difference]: Start difference. First operand 7020 states and 24444 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:53,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:53,993 INFO L93 Difference]: Finished difference Result 9720 states and 33271 transitions. [2021-07-09 18:53:53,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-09 18:53:53,993 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:53,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:54,015 INFO L225 Difference]: With dead ends: 9720 [2021-07-09 18:53:54,015 INFO L226 Difference]: Without dead ends: 9667 [2021-07-09 18:53:54,016 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 1019.4ms TimeCoverageRelationStatistics Valid=343, Invalid=3197, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 18:53:54,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9667 states. [2021-07-09 18:53:54,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9667 to 7010. [2021-07-09 18:53:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7010 states, 7009 states have (on average 3.484805250392353) internal successors, (24425), 7009 states have internal predecessors, (24425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:54,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7010 states to 7010 states and 24425 transitions. [2021-07-09 18:53:54,166 INFO L78 Accepts]: Start accepts. Automaton has 7010 states and 24425 transitions. Word has length 39 [2021-07-09 18:53:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:54,166 INFO L482 AbstractCegarLoop]: Abstraction has 7010 states and 24425 transitions. [2021-07-09 18:53:54,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 7010 states and 24425 transitions. [2021-07-09 18:53:54,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:54,178 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:54,178 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:54,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-07-09 18:53:54,178 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:54,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:54,179 INFO L82 PathProgramCache]: Analyzing trace with hash 2008583984, now seen corresponding path program 178 times [2021-07-09 18:53:54,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:54,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520965991] [2021-07-09 18:53:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:54,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:54,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520965991] [2021-07-09 18:53:54,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520965991] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:54,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:54,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:54,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101090930] [2021-07-09 18:53:54,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:54,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:54,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:54,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:54,355 INFO L87 Difference]: Start difference. First operand 7010 states and 24425 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:56,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:56,071 INFO L93 Difference]: Finished difference Result 9511 states and 32733 transitions. [2021-07-09 18:53:56,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 18:53:56,072 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:56,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:56,092 INFO L225 Difference]: With dead ends: 9511 [2021-07-09 18:53:56,093 INFO L226 Difference]: Without dead ends: 9444 [2021-07-09 18:53:56,093 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 898.5ms TimeCoverageRelationStatistics Valid=294, Invalid=2898, Unknown=0, NotChecked=0, Total=3192 [2021-07-09 18:53:56,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9444 states. [2021-07-09 18:53:56,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9444 to 7028. [2021-07-09 18:53:56,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7028 states, 7027 states have (on average 3.481855699444998) internal successors, (24467), 7027 states have internal predecessors, (24467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7028 states to 7028 states and 24467 transitions. [2021-07-09 18:53:56,237 INFO L78 Accepts]: Start accepts. Automaton has 7028 states and 24467 transitions. Word has length 39 [2021-07-09 18:53:56,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:56,237 INFO L482 AbstractCegarLoop]: Abstraction has 7028 states and 24467 transitions. [2021-07-09 18:53:56,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:56,237 INFO L276 IsEmpty]: Start isEmpty. Operand 7028 states and 24467 transitions. [2021-07-09 18:53:56,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:56,249 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:56,249 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:56,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-07-09 18:53:56,249 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:56,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:56,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1016309968, now seen corresponding path program 179 times [2021-07-09 18:53:56,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:56,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046934566] [2021-07-09 18:53:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:56,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:56,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046934566] [2021-07-09 18:53:56,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046934566] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:56,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:56,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:56,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861571929] [2021-07-09 18:53:56,424 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:56,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:56,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:56,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:56,424 INFO L87 Difference]: Start difference. First operand 7028 states and 24467 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:57,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:57,982 INFO L93 Difference]: Finished difference Result 9477 states and 32620 transitions. [2021-07-09 18:53:57,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 18:53:57,983 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:57,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:58,004 INFO L225 Difference]: With dead ends: 9477 [2021-07-09 18:53:58,004 INFO L226 Difference]: Without dead ends: 9434 [2021-07-09 18:53:58,004 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 831.7ms TimeCoverageRelationStatistics Valid=267, Invalid=2489, Unknown=0, NotChecked=0, Total=2756 [2021-07-09 18:53:58,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9434 states. [2021-07-09 18:53:58,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9434 to 7046. [2021-07-09 18:53:58,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7046 states, 7045 states have (on average 3.4784953867991484) internal successors, (24506), 7045 states have internal predecessors, (24506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7046 states to 7046 states and 24506 transitions. [2021-07-09 18:53:58,147 INFO L78 Accepts]: Start accepts. Automaton has 7046 states and 24506 transitions. Word has length 39 [2021-07-09 18:53:58,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:53:58,147 INFO L482 AbstractCegarLoop]: Abstraction has 7046 states and 24506 transitions. [2021-07-09 18:53:58,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:58,147 INFO L276 IsEmpty]: Start isEmpty. Operand 7046 states and 24506 transitions. [2021-07-09 18:53:58,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:53:58,159 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:53:58,159 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:53:58,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-07-09 18:53:58,159 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:53:58,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:53:58,159 INFO L82 PathProgramCache]: Analyzing trace with hash 733797168, now seen corresponding path program 180 times [2021-07-09 18:53:58,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:53:58,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230591195] [2021-07-09 18:53:58,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:53:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:53:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:53:58,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:53:58,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230591195] [2021-07-09 18:53:58,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230591195] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:53:58,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:53:58,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:53:58,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979569449] [2021-07-09 18:53:58,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:53:58,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:53:58,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:53:58,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:53:58,336 INFO L87 Difference]: Start difference. First operand 7046 states and 24506 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:53:59,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:53:59,915 INFO L93 Difference]: Finished difference Result 9411 states and 32458 transitions. [2021-07-09 18:53:59,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 18:53:59,915 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:53:59,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:53:59,937 INFO L225 Difference]: With dead ends: 9411 [2021-07-09 18:53:59,937 INFO L226 Difference]: Without dead ends: 9348 [2021-07-09 18:53:59,938 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 824.2ms TimeCoverageRelationStatistics Valid=266, Invalid=2490, Unknown=0, NotChecked=0, Total=2756 [2021-07-09 18:53:59,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9348 states. [2021-07-09 18:54:00,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9348 to 7028. [2021-07-09 18:54:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7028 states, 7027 states have (on average 3.4810018500071154) internal successors, (24461), 7027 states have internal predecessors, (24461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7028 states to 7028 states and 24461 transitions. [2021-07-09 18:54:00,088 INFO L78 Accepts]: Start accepts. Automaton has 7028 states and 24461 transitions. Word has length 39 [2021-07-09 18:54:00,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:00,088 INFO L482 AbstractCegarLoop]: Abstraction has 7028 states and 24461 transitions. [2021-07-09 18:54:00,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:00,088 INFO L276 IsEmpty]: Start isEmpty. Operand 7028 states and 24461 transitions. [2021-07-09 18:54:00,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:00,100 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:00,100 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:00,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-07-09 18:54:00,100 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:00,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:00,100 INFO L82 PathProgramCache]: Analyzing trace with hash -134793812, now seen corresponding path program 181 times [2021-07-09 18:54:00,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:00,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381605721] [2021-07-09 18:54:00,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:00,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:00,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381605721] [2021-07-09 18:54:00,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381605721] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:00,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:00,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:00,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034859868] [2021-07-09 18:54:00,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:00,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:00,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:00,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:00,278 INFO L87 Difference]: Start difference. First operand 7028 states and 24461 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:02,781 INFO L93 Difference]: Finished difference Result 10516 states and 36140 transitions. [2021-07-09 18:54:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-07-09 18:54:02,781 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:02,804 INFO L225 Difference]: With dead ends: 10516 [2021-07-09 18:54:02,805 INFO L226 Difference]: Without dead ends: 10473 [2021-07-09 18:54:02,805 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 1524.6ms TimeCoverageRelationStatistics Valid=523, Invalid=5957, Unknown=0, NotChecked=0, Total=6480 [2021-07-09 18:54:02,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10473 states. [2021-07-09 18:54:02,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10473 to 7034. [2021-07-09 18:54:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7034 states, 7033 states have (on average 3.4811602445613534) internal successors, (24483), 7033 states have internal predecessors, (24483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7034 states to 7034 states and 24483 transitions. [2021-07-09 18:54:02,975 INFO L78 Accepts]: Start accepts. Automaton has 7034 states and 24483 transitions. Word has length 39 [2021-07-09 18:54:02,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:02,975 INFO L482 AbstractCegarLoop]: Abstraction has 7034 states and 24483 transitions. [2021-07-09 18:54:02,975 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:02,975 INFO L276 IsEmpty]: Start isEmpty. Operand 7034 states and 24483 transitions. [2021-07-09 18:54:02,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:02,986 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:02,986 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:02,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-07-09 18:54:02,987 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:02,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:02,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1915392114, now seen corresponding path program 182 times [2021-07-09 18:54:02,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:02,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059539711] [2021-07-09 18:54:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:03,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:03,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059539711] [2021-07-09 18:54:03,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059539711] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:03,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:03,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:03,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88422332] [2021-07-09 18:54:03,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:03,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:03,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:03,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:03,162 INFO L87 Difference]: Start difference. First operand 7034 states and 24483 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:05,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:05,966 INFO L93 Difference]: Finished difference Result 11758 states and 40313 transitions. [2021-07-09 18:54:05,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-07-09 18:54:05,967 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:05,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:05,993 INFO L225 Difference]: With dead ends: 11758 [2021-07-09 18:54:05,993 INFO L226 Difference]: Without dead ends: 11706 [2021-07-09 18:54:05,994 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2400 ImplicationChecksByTransitivity, 1652.3ms TimeCoverageRelationStatistics Valid=565, Invalid=7091, Unknown=0, NotChecked=0, Total=7656 [2021-07-09 18:54:06,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11706 states. [2021-07-09 18:54:06,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11706 to 7027. [2021-07-09 18:54:06,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7027 states, 7026 states have (on average 3.480927981781953) internal successors, (24457), 7026 states have internal predecessors, (24457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:06,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7027 states to 7027 states and 24457 transitions. [2021-07-09 18:54:06,159 INFO L78 Accepts]: Start accepts. Automaton has 7027 states and 24457 transitions. Word has length 39 [2021-07-09 18:54:06,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:06,159 INFO L482 AbstractCegarLoop]: Abstraction has 7027 states and 24457 transitions. [2021-07-09 18:54:06,159 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:06,159 INFO L276 IsEmpty]: Start isEmpty. Operand 7027 states and 24457 transitions. [2021-07-09 18:54:06,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:06,170 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:06,170 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:06,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-07-09 18:54:06,170 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:06,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:06,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1672213042, now seen corresponding path program 183 times [2021-07-09 18:54:06,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:06,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629587185] [2021-07-09 18:54:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:06,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:06,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629587185] [2021-07-09 18:54:06,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629587185] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:06,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:06,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:06,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245337038] [2021-07-09 18:54:06,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:06,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:06,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:06,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:06,341 INFO L87 Difference]: Start difference. First operand 7027 states and 24457 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:07,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:07,916 INFO L93 Difference]: Finished difference Result 9525 states and 32721 transitions. [2021-07-09 18:54:07,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-09 18:54:07,916 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:07,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:07,937 INFO L225 Difference]: With dead ends: 9525 [2021-07-09 18:54:07,937 INFO L226 Difference]: Without dead ends: 9482 [2021-07-09 18:54:07,937 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 822.8ms TimeCoverageRelationStatistics Valid=277, Invalid=2585, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:54:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9482 states. [2021-07-09 18:54:08,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9482 to 7036. [2021-07-09 18:54:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7036 states, 7035 states have (on average 3.4794598436389483) internal successors, (24478), 7035 states have internal predecessors, (24478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:08,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7036 states to 7036 states and 24478 transitions. [2021-07-09 18:54:08,083 INFO L78 Accepts]: Start accepts. Automaton has 7036 states and 24478 transitions. Word has length 39 [2021-07-09 18:54:08,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:08,083 INFO L482 AbstractCegarLoop]: Abstraction has 7036 states and 24478 transitions. [2021-07-09 18:54:08,083 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 7036 states and 24478 transitions. [2021-07-09 18:54:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:08,094 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:08,094 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:08,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-07-09 18:54:08,095 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:08,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:08,095 INFO L82 PathProgramCache]: Analyzing trace with hash 77894094, now seen corresponding path program 184 times [2021-07-09 18:54:08,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:08,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682411283] [2021-07-09 18:54:08,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:08,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:08,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682411283] [2021-07-09 18:54:08,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682411283] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:08,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:08,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:08,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106656793] [2021-07-09 18:54:08,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:08,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:08,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:08,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:08,269 INFO L87 Difference]: Start difference. First operand 7036 states and 24478 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:09,905 INFO L93 Difference]: Finished difference Result 9473 states and 32596 transitions. [2021-07-09 18:54:09,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-09 18:54:09,905 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:09,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:09,927 INFO L225 Difference]: With dead ends: 9473 [2021-07-09 18:54:09,927 INFO L226 Difference]: Without dead ends: 9422 [2021-07-09 18:54:09,927 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 873.0ms TimeCoverageRelationStatistics Valid=284, Invalid=2686, Unknown=0, NotChecked=0, Total=2970 [2021-07-09 18:54:09,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9422 states. [2021-07-09 18:54:10,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9422 to 7030. [2021-07-09 18:54:10,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7030 states, 7029 states have (on average 3.480153649167734) internal successors, (24462), 7029 states have internal predecessors, (24462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:10,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7030 states to 7030 states and 24462 transitions. [2021-07-09 18:54:10,071 INFO L78 Accepts]: Start accepts. Automaton has 7030 states and 24462 transitions. Word has length 39 [2021-07-09 18:54:10,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:10,072 INFO L482 AbstractCegarLoop]: Abstraction has 7030 states and 24462 transitions. [2021-07-09 18:54:10,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:10,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7030 states and 24462 transitions. [2021-07-09 18:54:10,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:10,083 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:10,083 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:10,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-07-09 18:54:10,083 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:10,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:10,084 INFO L82 PathProgramCache]: Analyzing trace with hash 695112496, now seen corresponding path program 185 times [2021-07-09 18:54:10,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:10,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021516596] [2021-07-09 18:54:10,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:10,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:10,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021516596] [2021-07-09 18:54:10,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021516596] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:10,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:10,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:10,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672511813] [2021-07-09 18:54:10,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:10,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:10,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:10,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:10,260 INFO L87 Difference]: Start difference. First operand 7030 states and 24462 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:12,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:12,156 INFO L93 Difference]: Finished difference Result 10649 states and 36563 transitions. [2021-07-09 18:54:12,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 18:54:12,157 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:12,180 INFO L225 Difference]: With dead ends: 10649 [2021-07-09 18:54:12,180 INFO L226 Difference]: Without dead ends: 10603 [2021-07-09 18:54:12,180 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 990.0ms TimeCoverageRelationStatistics Valid=305, Invalid=3117, Unknown=0, NotChecked=0, Total=3422 [2021-07-09 18:54:12,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10603 states. [2021-07-09 18:54:12,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10603 to 7037. [2021-07-09 18:54:12,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7037 states, 7036 states have (on average 3.4788231949971573) internal successors, (24477), 7036 states have internal predecessors, (24477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 24477 transitions. [2021-07-09 18:54:12,333 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 24477 transitions. Word has length 39 [2021-07-09 18:54:12,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:12,333 INFO L482 AbstractCegarLoop]: Abstraction has 7037 states and 24477 transitions. [2021-07-09 18:54:12,333 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:12,333 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 24477 transitions. [2021-07-09 18:54:12,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:12,345 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:12,345 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:12,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-07-09 18:54:12,345 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:12,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:12,345 INFO L82 PathProgramCache]: Analyzing trace with hash -739954994, now seen corresponding path program 186 times [2021-07-09 18:54:12,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:12,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567107393] [2021-07-09 18:54:12,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:12,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:12,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567107393] [2021-07-09 18:54:12,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567107393] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:12,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:12,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:12,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360553578] [2021-07-09 18:54:12,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:12,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:12,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:12,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:12,518 INFO L87 Difference]: Start difference. First operand 7037 states and 24477 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:14,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:14,119 INFO L93 Difference]: Finished difference Result 9405 states and 32431 transitions. [2021-07-09 18:54:14,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 18:54:14,119 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:14,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:14,140 INFO L225 Difference]: With dead ends: 9405 [2021-07-09 18:54:14,140 INFO L226 Difference]: Without dead ends: 9338 [2021-07-09 18:54:14,141 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 864.2ms TimeCoverageRelationStatistics Valid=275, Invalid=2587, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:54:14,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9338 states. [2021-07-09 18:54:14,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9338 to 7021. [2021-07-09 18:54:14,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7021 states, 7020 states have (on average 3.4821937321937324) internal successors, (24445), 7020 states have internal predecessors, (24445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 24445 transitions. [2021-07-09 18:54:14,285 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 24445 transitions. Word has length 39 [2021-07-09 18:54:14,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:14,285 INFO L482 AbstractCegarLoop]: Abstraction has 7021 states and 24445 transitions. [2021-07-09 18:54:14,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 24445 transitions. [2021-07-09 18:54:14,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:14,297 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:14,297 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:14,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-07-09 18:54:14,297 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:14,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:14,297 INFO L82 PathProgramCache]: Analyzing trace with hash 895259678, now seen corresponding path program 187 times [2021-07-09 18:54:14,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:14,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289692186] [2021-07-09 18:54:14,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:14,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:14,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289692186] [2021-07-09 18:54:14,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289692186] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:14,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:14,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:14,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69959989] [2021-07-09 18:54:14,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:14,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:14,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:14,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:14,471 INFO L87 Difference]: Start difference. First operand 7021 states and 24445 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:16,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:16,027 INFO L93 Difference]: Finished difference Result 9501 states and 32677 transitions. [2021-07-09 18:54:16,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-09 18:54:16,027 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:16,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:16,048 INFO L225 Difference]: With dead ends: 9501 [2021-07-09 18:54:16,048 INFO L226 Difference]: Without dead ends: 9438 [2021-07-09 18:54:16,048 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 816.8ms TimeCoverageRelationStatistics Valid=279, Invalid=2583, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:54:16,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9438 states. [2021-07-09 18:54:16,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9438 to 7025. [2021-07-09 18:54:16,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7025 states, 7024 states have (on average 3.481634396355353) internal successors, (24455), 7024 states have internal predecessors, (24455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7025 states to 7025 states and 24455 transitions. [2021-07-09 18:54:16,192 INFO L78 Accepts]: Start accepts. Automaton has 7025 states and 24455 transitions. Word has length 39 [2021-07-09 18:54:16,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:16,192 INFO L482 AbstractCegarLoop]: Abstraction has 7025 states and 24455 transitions. [2021-07-09 18:54:16,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:16,192 INFO L276 IsEmpty]: Start isEmpty. Operand 7025 states and 24455 transitions. [2021-07-09 18:54:16,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:16,204 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:16,204 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:16,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-07-09 18:54:16,204 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:16,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:16,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1012350814, now seen corresponding path program 188 times [2021-07-09 18:54:16,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:16,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104212282] [2021-07-09 18:54:16,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:16,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:16,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:16,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104212282] [2021-07-09 18:54:16,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104212282] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:16,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:16,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:16,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633954800] [2021-07-09 18:54:16,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:16,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:16,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:16,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:16,380 INFO L87 Difference]: Start difference. First operand 7025 states and 24455 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:17,930 INFO L93 Difference]: Finished difference Result 9554 states and 32803 transitions. [2021-07-09 18:54:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-09 18:54:17,930 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:17,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:17,951 INFO L225 Difference]: With dead ends: 9554 [2021-07-09 18:54:17,951 INFO L226 Difference]: Without dead ends: 9511 [2021-07-09 18:54:17,952 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 805.0ms TimeCoverageRelationStatistics Valid=266, Invalid=2490, Unknown=0, NotChecked=0, Total=2756 [2021-07-09 18:54:17,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9511 states. [2021-07-09 18:54:18,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9511 to 7043. [2021-07-09 18:54:18,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7043 states, 7042 states have (on average 3.478273217835842) internal successors, (24494), 7042 states have internal predecessors, (24494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:18,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7043 states to 7043 states and 24494 transitions. [2021-07-09 18:54:18,096 INFO L78 Accepts]: Start accepts. Automaton has 7043 states and 24494 transitions. Word has length 39 [2021-07-09 18:54:18,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:18,096 INFO L482 AbstractCegarLoop]: Abstraction has 7043 states and 24494 transitions. [2021-07-09 18:54:18,096 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:18,096 INFO L276 IsEmpty]: Start isEmpty. Operand 7043 states and 24494 transitions. [2021-07-09 18:54:18,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:18,107 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:18,108 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:18,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-07-09 18:54:18,108 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:18,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:18,108 INFO L82 PathProgramCache]: Analyzing trace with hash 737756322, now seen corresponding path program 189 times [2021-07-09 18:54:18,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:18,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959235240] [2021-07-09 18:54:18,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:18,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:18,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959235240] [2021-07-09 18:54:18,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959235240] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:18,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:18,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:18,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506795713] [2021-07-09 18:54:18,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:18,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:18,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:18,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:18,287 INFO L87 Difference]: Start difference. First operand 7043 states and 24494 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:19,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:19,850 INFO L93 Difference]: Finished difference Result 9423 states and 32487 transitions. [2021-07-09 18:54:19,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 18:54:19,850 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:19,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:19,871 INFO L225 Difference]: With dead ends: 9423 [2021-07-09 18:54:19,871 INFO L226 Difference]: Without dead ends: 9360 [2021-07-09 18:54:19,872 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 799.0ms TimeCoverageRelationStatistics Valid=252, Invalid=2400, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 18:54:19,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9360 states. [2021-07-09 18:54:19,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9360 to 7025. [2021-07-09 18:54:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7025 states, 7024 states have (on average 3.4810649202733486) internal successors, (24451), 7024 states have internal predecessors, (24451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:20,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7025 states to 7025 states and 24451 transitions. [2021-07-09 18:54:20,017 INFO L78 Accepts]: Start accepts. Automaton has 7025 states and 24451 transitions. Word has length 39 [2021-07-09 18:54:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:20,017 INFO L482 AbstractCegarLoop]: Abstraction has 7025 states and 24451 transitions. [2021-07-09 18:54:20,017 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 7025 states and 24451 transitions. [2021-07-09 18:54:20,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:20,028 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:20,028 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:20,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-07-09 18:54:20,028 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:20,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1011626978, now seen corresponding path program 190 times [2021-07-09 18:54:20,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:20,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105235015] [2021-07-09 18:54:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:20,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:20,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105235015] [2021-07-09 18:54:20,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105235015] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:20,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:20,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:20,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552009381] [2021-07-09 18:54:20,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:20,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:20,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:20,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:20,206 INFO L87 Difference]: Start difference. First operand 7025 states and 24451 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:21,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:21,889 INFO L93 Difference]: Finished difference Result 9507 states and 32702 transitions. [2021-07-09 18:54:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-07-09 18:54:21,889 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:21,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:21,910 INFO L225 Difference]: With dead ends: 9507 [2021-07-09 18:54:21,910 INFO L226 Difference]: Without dead ends: 9452 [2021-07-09 18:54:21,911 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 901.7ms TimeCoverageRelationStatistics Valid=305, Invalid=2887, Unknown=0, NotChecked=0, Total=3192 [2021-07-09 18:54:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9452 states. [2021-07-09 18:54:22,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9452 to 7027. [2021-07-09 18:54:22,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7027 states, 7026 states have (on average 3.4807856532877883) internal successors, (24456), 7026 states have internal predecessors, (24456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:22,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7027 states to 7027 states and 24456 transitions. [2021-07-09 18:54:22,053 INFO L78 Accepts]: Start accepts. Automaton has 7027 states and 24456 transitions. Word has length 39 [2021-07-09 18:54:22,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:22,053 INFO L482 AbstractCegarLoop]: Abstraction has 7027 states and 24456 transitions. [2021-07-09 18:54:22,054 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:22,054 INFO L276 IsEmpty]: Start isEmpty. Operand 7027 states and 24456 transitions. [2021-07-09 18:54:22,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:22,065 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:22,065 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:22,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-07-09 18:54:22,066 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:22,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:22,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1782465792, now seen corresponding path program 191 times [2021-07-09 18:54:22,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:22,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127898099] [2021-07-09 18:54:22,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:22,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:22,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:22,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127898099] [2021-07-09 18:54:22,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127898099] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:22,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:22,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:22,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869221872] [2021-07-09 18:54:22,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:22,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:22,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:22,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:22,241 INFO L87 Difference]: Start difference. First operand 7027 states and 24456 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:23,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:23,829 INFO L93 Difference]: Finished difference Result 9483 states and 32632 transitions. [2021-07-09 18:54:23,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-09 18:54:23,829 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:23,850 INFO L225 Difference]: With dead ends: 9483 [2021-07-09 18:54:23,850 INFO L226 Difference]: Without dead ends: 9440 [2021-07-09 18:54:23,851 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 866.8ms TimeCoverageRelationStatistics Valid=281, Invalid=2689, Unknown=0, NotChecked=0, Total=2970 [2021-07-09 18:54:23,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9440 states. [2021-07-09 18:54:23,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9440 to 7033. [2021-07-09 18:54:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7033 states, 7032 states have (on average 3.4796643913538112) internal successors, (24469), 7032 states have internal predecessors, (24469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7033 states to 7033 states and 24469 transitions. [2021-07-09 18:54:23,998 INFO L78 Accepts]: Start accepts. Automaton has 7033 states and 24469 transitions. Word has length 39 [2021-07-09 18:54:23,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:23,998 INFO L482 AbstractCegarLoop]: Abstraction has 7033 states and 24469 transitions. [2021-07-09 18:54:23,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:23,998 INFO L276 IsEmpty]: Start isEmpty. Operand 7033 states and 24469 transitions. [2021-07-09 18:54:24,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:24,010 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:24,010 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:24,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-07-09 18:54:24,010 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:24,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:24,010 INFO L82 PathProgramCache]: Analyzing trace with hash -532128320, now seen corresponding path program 192 times [2021-07-09 18:54:24,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:24,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991225104] [2021-07-09 18:54:24,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:24,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:24,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991225104] [2021-07-09 18:54:24,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991225104] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:24,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:24,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:24,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095561114] [2021-07-09 18:54:24,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:24,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:24,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:24,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:24,187 INFO L87 Difference]: Start difference. First operand 7033 states and 24469 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:25,769 INFO L93 Difference]: Finished difference Result 9417 states and 32470 transitions. [2021-07-09 18:54:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-09 18:54:25,769 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:25,790 INFO L225 Difference]: With dead ends: 9417 [2021-07-09 18:54:25,790 INFO L226 Difference]: Without dead ends: 9356 [2021-07-09 18:54:25,791 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 824.3ms TimeCoverageRelationStatistics Valid=267, Invalid=2595, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:54:25,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9356 states. [2021-07-09 18:54:25,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9356 to 7021. [2021-07-09 18:54:25,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7021 states, 7020 states have (on average 3.481908831908832) internal successors, (24443), 7020 states have internal predecessors, (24443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:25,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 24443 transitions. [2021-07-09 18:54:25,934 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 24443 transitions. Word has length 39 [2021-07-09 18:54:25,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:25,934 INFO L482 AbstractCegarLoop]: Abstraction has 7021 states and 24443 transitions. [2021-07-09 18:54:25,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:25,934 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 24443 transitions. [2021-07-09 18:54:25,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:25,945 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:25,945 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:25,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-07-09 18:54:25,945 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:25,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:25,946 INFO L82 PathProgramCache]: Analyzing trace with hash 806128674, now seen corresponding path program 193 times [2021-07-09 18:54:25,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:25,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100123367] [2021-07-09 18:54:25,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:26,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:26,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100123367] [2021-07-09 18:54:26,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100123367] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:26,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:26,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:26,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809572672] [2021-07-09 18:54:26,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:26,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:26,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:26,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:26,120 INFO L87 Difference]: Start difference. First operand 7021 states and 24443 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:27,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:27,993 INFO L93 Difference]: Finished difference Result 9607 states and 32929 transitions. [2021-07-09 18:54:27,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-07-09 18:54:27,993 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:27,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:28,014 INFO L225 Difference]: With dead ends: 9607 [2021-07-09 18:54:28,014 INFO L226 Difference]: Without dead ends: 9552 [2021-07-09 18:54:28,015 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1074.8ms TimeCoverageRelationStatistics Valid=373, Invalid=3533, Unknown=0, NotChecked=0, Total=3906 [2021-07-09 18:54:28,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9552 states. [2021-07-09 18:54:28,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9552 to 7026. [2021-07-09 18:54:28,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7026 states, 7025 states have (on average 3.4811387900355872) internal successors, (24455), 7025 states have internal predecessors, (24455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:28,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7026 states to 7026 states and 24455 transitions. [2021-07-09 18:54:28,157 INFO L78 Accepts]: Start accepts. Automaton has 7026 states and 24455 transitions. Word has length 39 [2021-07-09 18:54:28,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:28,157 INFO L482 AbstractCegarLoop]: Abstraction has 7026 states and 24455 transitions. [2021-07-09 18:54:28,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:28,157 INFO L276 IsEmpty]: Start isEmpty. Operand 7026 states and 24455 transitions. [2021-07-09 18:54:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:28,168 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:28,168 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:28,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-07-09 18:54:28,168 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:28,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:28,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1978780896, now seen corresponding path program 194 times [2021-07-09 18:54:28,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:28,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147734167] [2021-07-09 18:54:28,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:28,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:28,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:28,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147734167] [2021-07-09 18:54:28,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147734167] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:28,343 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:28,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:28,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833590543] [2021-07-09 18:54:28,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:28,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:28,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:28,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:28,344 INFO L87 Difference]: Start difference. First operand 7026 states and 24455 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:30,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:30,399 INFO L93 Difference]: Finished difference Result 10787 states and 36895 transitions. [2021-07-09 18:54:30,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-07-09 18:54:30,399 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:30,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:30,424 INFO L225 Difference]: With dead ends: 10787 [2021-07-09 18:54:30,424 INFO L226 Difference]: Without dead ends: 10741 [2021-07-09 18:54:30,424 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 1112.8ms TimeCoverageRelationStatistics Valid=370, Invalid=3790, Unknown=0, NotChecked=0, Total=4160 [2021-07-09 18:54:30,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10741 states. [2021-07-09 18:54:30,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10741 to 7032. [2021-07-09 18:54:30,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7032 states, 7031 states have (on average 3.4803015218318873) internal successors, (24470), 7031 states have internal predecessors, (24470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:30,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7032 states to 7032 states and 24470 transitions. [2021-07-09 18:54:30,580 INFO L78 Accepts]: Start accepts. Automaton has 7032 states and 24470 transitions. Word has length 39 [2021-07-09 18:54:30,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:30,580 INFO L482 AbstractCegarLoop]: Abstraction has 7032 states and 24470 transitions. [2021-07-09 18:54:30,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:30,581 INFO L276 IsEmpty]: Start isEmpty. Operand 7032 states and 24470 transitions. [2021-07-09 18:54:30,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:30,592 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:30,592 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:30,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-07-09 18:54:30,592 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:30,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:30,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1731314734, now seen corresponding path program 195 times [2021-07-09 18:54:30,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:30,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937916111] [2021-07-09 18:54:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:30,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:30,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937916111] [2021-07-09 18:54:30,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937916111] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:30,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:30,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:30,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602828207] [2021-07-09 18:54:30,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:30,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:30,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:30,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:30,767 INFO L87 Difference]: Start difference. First operand 7032 states and 24470 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:32,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:32,592 INFO L93 Difference]: Finished difference Result 9709 states and 33233 transitions. [2021-07-09 18:54:32,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-09 18:54:32,593 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:32,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:32,614 INFO L225 Difference]: With dead ends: 9709 [2021-07-09 18:54:32,615 INFO L226 Difference]: Without dead ends: 9664 [2021-07-09 18:54:32,615 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 1044.1ms TimeCoverageRelationStatistics Valid=335, Invalid=3205, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 18:54:32,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9664 states. [2021-07-09 18:54:32,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9664 to 7030. [2021-07-09 18:54:32,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7030 states, 7029 states have (on average 3.48072272015934) internal successors, (24466), 7029 states have internal predecessors, (24466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:32,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7030 states to 7030 states and 24466 transitions. [2021-07-09 18:54:32,762 INFO L78 Accepts]: Start accepts. Automaton has 7030 states and 24466 transitions. Word has length 39 [2021-07-09 18:54:32,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:32,762 INFO L482 AbstractCegarLoop]: Abstraction has 7030 states and 24466 transitions. [2021-07-09 18:54:32,762 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:32,763 INFO L276 IsEmpty]: Start isEmpty. Operand 7030 states and 24466 transitions. [2021-07-09 18:54:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:32,774 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:32,774 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:32,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-07-09 18:54:32,774 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:32,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:32,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1911036016, now seen corresponding path program 196 times [2021-07-09 18:54:32,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:32,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892891292] [2021-07-09 18:54:32,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:32,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:32,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892891292] [2021-07-09 18:54:32,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892891292] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:32,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:32,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:32,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255249508] [2021-07-09 18:54:32,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:32,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:32,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:32,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:32,977 INFO L87 Difference]: Start difference. First operand 7030 states and 24466 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:34,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:34,735 INFO L93 Difference]: Finished difference Result 9613 states and 32941 transitions. [2021-07-09 18:54:34,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-09 18:54:34,736 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:34,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:34,757 INFO L225 Difference]: With dead ends: 9613 [2021-07-09 18:54:34,757 INFO L226 Difference]: Without dead ends: 9570 [2021-07-09 18:54:34,757 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1006.4ms TimeCoverageRelationStatistics Valid=332, Invalid=3208, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 18:54:34,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9570 states. [2021-07-09 18:54:34,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9570 to 7039. [2021-07-09 18:54:34,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7039 states, 7038 states have (on average 3.4792554703040635) internal successors, (24487), 7038 states have internal predecessors, (24487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:34,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7039 states to 7039 states and 24487 transitions. [2021-07-09 18:54:34,940 INFO L78 Accepts]: Start accepts. Automaton has 7039 states and 24487 transitions. Word has length 39 [2021-07-09 18:54:34,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:34,940 INFO L482 AbstractCegarLoop]: Abstraction has 7039 states and 24487 transitions. [2021-07-09 18:54:34,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:34,940 INFO L276 IsEmpty]: Start isEmpty. Operand 7039 states and 24487 transitions. [2021-07-09 18:54:34,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:34,951 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:34,951 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:34,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-07-09 18:54:34,951 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:34,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:34,952 INFO L82 PathProgramCache]: Analyzing trace with hash -633824144, now seen corresponding path program 197 times [2021-07-09 18:54:34,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:34,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247667945] [2021-07-09 18:54:34,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:35,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:35,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247667945] [2021-07-09 18:54:35,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247667945] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:35,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:35,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:35,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224761722] [2021-07-09 18:54:35,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:35,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:35,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:35,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:35,128 INFO L87 Difference]: Start difference. First operand 7039 states and 24487 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:36,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:36,830 INFO L93 Difference]: Finished difference Result 9563 states and 32817 transitions. [2021-07-09 18:54:36,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 18:54:36,830 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:36,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:36,851 INFO L225 Difference]: With dead ends: 9563 [2021-07-09 18:54:36,851 INFO L226 Difference]: Without dead ends: 9512 [2021-07-09 18:54:36,852 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 928.3ms TimeCoverageRelationStatistics Valid=307, Invalid=2999, Unknown=0, NotChecked=0, Total=3306 [2021-07-09 18:54:36,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9512 states. [2021-07-09 18:54:36,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9512 to 7039. [2021-07-09 18:54:36,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7039 states, 7038 states have (on average 3.478829212844558) internal successors, (24484), 7038 states have internal predecessors, (24484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:37,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7039 states to 7039 states and 24484 transitions. [2021-07-09 18:54:37,016 INFO L78 Accepts]: Start accepts. Automaton has 7039 states and 24484 transitions. Word has length 39 [2021-07-09 18:54:37,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:37,016 INFO L482 AbstractCegarLoop]: Abstraction has 7039 states and 24484 transitions. [2021-07-09 18:54:37,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:37,016 INFO L276 IsEmpty]: Start isEmpty. Operand 7039 states and 24484 transitions. [2021-07-09 18:54:37,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:37,027 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:37,027 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:37,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-07-09 18:54:37,027 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:37,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:37,028 INFO L82 PathProgramCache]: Analyzing trace with hash -16605742, now seen corresponding path program 198 times [2021-07-09 18:54:37,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:37,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330022982] [2021-07-09 18:54:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:37,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:37,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330022982] [2021-07-09 18:54:37,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330022982] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:37,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:37,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:37,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455968070] [2021-07-09 18:54:37,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:37,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:37,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:37,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:37,202 INFO L87 Difference]: Start difference. First operand 7039 states and 24484 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:39,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:39,231 INFO L93 Difference]: Finished difference Result 10790 states and 36899 transitions. [2021-07-09 18:54:39,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-07-09 18:54:39,231 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:39,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:39,254 INFO L225 Difference]: With dead ends: 10790 [2021-07-09 18:54:39,254 INFO L226 Difference]: Without dead ends: 10744 [2021-07-09 18:54:39,254 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1099.6ms TimeCoverageRelationStatistics Valid=342, Invalid=3564, Unknown=0, NotChecked=0, Total=3906 [2021-07-09 18:54:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2021-07-09 18:54:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 7046. [2021-07-09 18:54:39,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7046 states, 7045 states have (on average 3.4775017743080197) internal successors, (24499), 7045 states have internal predecessors, (24499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:39,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7046 states to 7046 states and 24499 transitions. [2021-07-09 18:54:39,405 INFO L78 Accepts]: Start accepts. Automaton has 7046 states and 24499 transitions. Word has length 39 [2021-07-09 18:54:39,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:39,406 INFO L482 AbstractCegarLoop]: Abstraction has 7046 states and 24499 transitions. [2021-07-09 18:54:39,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:39,406 INFO L276 IsEmpty]: Start isEmpty. Operand 7046 states and 24499 transitions. [2021-07-09 18:54:39,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:39,417 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:39,417 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:39,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-07-09 18:54:39,417 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:39,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:39,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1451673232, now seen corresponding path program 199 times [2021-07-09 18:54:39,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:39,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794949871] [2021-07-09 18:54:39,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:39,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:39,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794949871] [2021-07-09 18:54:39,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794949871] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:39,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:39,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:39,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706248608] [2021-07-09 18:54:39,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:39,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:39,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:39,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:39,592 INFO L87 Difference]: Start difference. First operand 7046 states and 24499 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:41,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:41,289 INFO L93 Difference]: Finished difference Result 9549 states and 32770 transitions. [2021-07-09 18:54:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-07-09 18:54:41,289 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:41,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:41,309 INFO L225 Difference]: With dead ends: 9549 [2021-07-09 18:54:41,309 INFO L226 Difference]: Without dead ends: 9494 [2021-07-09 18:54:41,310 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 928.4ms TimeCoverageRelationStatistics Valid=297, Invalid=2895, Unknown=0, NotChecked=0, Total=3192 [2021-07-09 18:54:41,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9494 states. [2021-07-09 18:54:41,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9494 to 7043. [2021-07-09 18:54:41,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7043 states, 7042 states have (on average 3.478131212723658) internal successors, (24493), 7042 states have internal predecessors, (24493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:41,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7043 states to 7043 states and 24493 transitions. [2021-07-09 18:54:41,447 INFO L78 Accepts]: Start accepts. Automaton has 7043 states and 24493 transitions. Word has length 39 [2021-07-09 18:54:41,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:41,447 INFO L482 AbstractCegarLoop]: Abstraction has 7043 states and 24493 transitions. [2021-07-09 18:54:41,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:41,447 INFO L276 IsEmpty]: Start isEmpty. Operand 7043 states and 24493 transitions. [2021-07-09 18:54:41,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:41,459 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:41,459 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:41,459 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-07-09 18:54:41,459 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:41,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:41,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1560590946, now seen corresponding path program 200 times [2021-07-09 18:54:41,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:41,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098634292] [2021-07-09 18:54:41,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:41,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:41,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098634292] [2021-07-09 18:54:41,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098634292] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:41,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:41,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:41,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154366772] [2021-07-09 18:54:41,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:41,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:41,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:41,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:41,633 INFO L87 Difference]: Start difference. First operand 7043 states and 24493 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:43,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:43,365 INFO L93 Difference]: Finished difference Result 9533 states and 32730 transitions. [2021-07-09 18:54:43,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 18:54:43,365 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:43,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:43,386 INFO L225 Difference]: With dead ends: 9533 [2021-07-09 18:54:43,386 INFO L226 Difference]: Without dead ends: 9476 [2021-07-09 18:54:43,387 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 927.1ms TimeCoverageRelationStatistics Valid=305, Invalid=3001, Unknown=0, NotChecked=0, Total=3306 [2021-07-09 18:54:43,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9476 states. [2021-07-09 18:54:43,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9476 to 7035. [2021-07-09 18:54:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7035 states, 7034 states have (on average 3.4793858402047197) internal successors, (24474), 7034 states have internal predecessors, (24474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7035 states to 7035 states and 24474 transitions. [2021-07-09 18:54:43,530 INFO L78 Accepts]: Start accepts. Automaton has 7035 states and 24474 transitions. Word has length 39 [2021-07-09 18:54:43,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:43,530 INFO L482 AbstractCegarLoop]: Abstraction has 7035 states and 24474 transitions. [2021-07-09 18:54:43,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:43,530 INFO L276 IsEmpty]: Start isEmpty. Operand 7035 states and 24474 transitions. [2021-07-09 18:54:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:43,541 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:43,541 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:43,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-07-09 18:54:43,542 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:43,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:43,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1993644724, now seen corresponding path program 201 times [2021-07-09 18:54:43,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:43,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448857131] [2021-07-09 18:54:43,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:43,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:43,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448857131] [2021-07-09 18:54:43,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448857131] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:43,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:43,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:43,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791577700] [2021-07-09 18:54:43,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:43,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:43,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:43,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:43,717 INFO L87 Difference]: Start difference. First operand 7035 states and 24474 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:45,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:45,591 INFO L93 Difference]: Finished difference Result 9876 states and 33881 transitions. [2021-07-09 18:54:45,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-09 18:54:45,591 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:45,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:45,612 INFO L225 Difference]: With dead ends: 9876 [2021-07-09 18:54:45,612 INFO L226 Difference]: Without dead ends: 9833 [2021-07-09 18:54:45,613 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 996.9ms TimeCoverageRelationStatistics Valid=322, Invalid=3218, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 18:54:45,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9833 states. [2021-07-09 18:54:45,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9833 to 7031. [2021-07-09 18:54:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7031 states, 7030 states have (on average 3.4799431009957327) internal successors, (24464), 7030 states have internal predecessors, (24464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7031 states to 7031 states and 24464 transitions. [2021-07-09 18:54:45,754 INFO L78 Accepts]: Start accepts. Automaton has 7031 states and 24464 transitions. Word has length 39 [2021-07-09 18:54:45,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:45,754 INFO L482 AbstractCegarLoop]: Abstraction has 7031 states and 24464 transitions. [2021-07-09 18:54:45,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:45,754 INFO L276 IsEmpty]: Start isEmpty. Operand 7031 states and 24464 transitions. [2021-07-09 18:54:45,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:45,765 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:45,765 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:45,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-07-09 18:54:45,766 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:45,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:45,766 INFO L82 PathProgramCache]: Analyzing trace with hash -156887234, now seen corresponding path program 202 times [2021-07-09 18:54:45,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:45,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116931772] [2021-07-09 18:54:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:45,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:45,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116931772] [2021-07-09 18:54:45,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116931772] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:45,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:45,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:45,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550764851] [2021-07-09 18:54:45,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:45,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:45,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:45,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:45,937 INFO L87 Difference]: Start difference. First operand 7031 states and 24464 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:47,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:47,703 INFO L93 Difference]: Finished difference Result 9712 states and 33413 transitions. [2021-07-09 18:54:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-07-09 18:54:47,703 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:47,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:47,724 INFO L225 Difference]: With dead ends: 9712 [2021-07-09 18:54:47,724 INFO L226 Difference]: Without dead ends: 9649 [2021-07-09 18:54:47,725 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 944.8ms TimeCoverageRelationStatistics Valid=304, Invalid=3002, Unknown=0, NotChecked=0, Total=3306 [2021-07-09 18:54:47,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9649 states. [2021-07-09 18:54:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9649 to 7019. [2021-07-09 18:54:47,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7019 states, 7018 states have (on average 3.482331148475349) internal successors, (24439), 7018 states have internal predecessors, (24439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:47,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7019 states to 7019 states and 24439 transitions. [2021-07-09 18:54:47,869 INFO L78 Accepts]: Start accepts. Automaton has 7019 states and 24439 transitions. Word has length 39 [2021-07-09 18:54:47,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:47,869 INFO L482 AbstractCegarLoop]: Abstraction has 7019 states and 24439 transitions. [2021-07-09 18:54:47,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:47,869 INFO L276 IsEmpty]: Start isEmpty. Operand 7019 states and 24439 transitions. [2021-07-09 18:54:47,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:47,881 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:47,881 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:47,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-07-09 18:54:47,881 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:47,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:47,881 INFO L82 PathProgramCache]: Analyzing trace with hash 888629100, now seen corresponding path program 203 times [2021-07-09 18:54:47,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:47,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383519930] [2021-07-09 18:54:47,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:48,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:48,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383519930] [2021-07-09 18:54:48,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383519930] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:48,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:48,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:48,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951090869] [2021-07-09 18:54:48,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:48,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:48,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:48,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:48,055 INFO L87 Difference]: Start difference. First operand 7019 states and 24439 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:49,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:49,454 INFO L93 Difference]: Finished difference Result 9263 states and 32060 transitions. [2021-07-09 18:54:49,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-09 18:54:49,454 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:49,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:49,474 INFO L225 Difference]: With dead ends: 9263 [2021-07-09 18:54:49,474 INFO L226 Difference]: Without dead ends: 9200 [2021-07-09 18:54:49,475 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 714.7ms TimeCoverageRelationStatistics Valid=220, Invalid=2036, Unknown=0, NotChecked=0, Total=2256 [2021-07-09 18:54:49,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9200 states. [2021-07-09 18:54:49,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9200 to 7051. [2021-07-09 18:54:49,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7050 states have (on average 3.4784397163120566) internal successors, (24523), 7050 states have internal predecessors, (24523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:49,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 24523 transitions. [2021-07-09 18:54:49,615 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 24523 transitions. Word has length 39 [2021-07-09 18:54:49,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:49,615 INFO L482 AbstractCegarLoop]: Abstraction has 7051 states and 24523 transitions. [2021-07-09 18:54:49,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:49,615 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 24523 transitions. [2021-07-09 18:54:49,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:49,627 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:49,627 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:49,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-07-09 18:54:49,627 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:49,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:49,627 INFO L82 PathProgramCache]: Analyzing trace with hash 953262606, now seen corresponding path program 204 times [2021-07-09 18:54:49,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:49,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412959712] [2021-07-09 18:54:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:49,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:49,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412959712] [2021-07-09 18:54:49,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412959712] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:49,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:49,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:49,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623273491] [2021-07-09 18:54:49,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:49,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:49,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:49,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:49,800 INFO L87 Difference]: Start difference. First operand 7051 states and 24523 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:51,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:51,218 INFO L93 Difference]: Finished difference Result 9246 states and 32034 transitions. [2021-07-09 18:54:51,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-09 18:54:51,218 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:51,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:51,238 INFO L225 Difference]: With dead ends: 9246 [2021-07-09 18:54:51,238 INFO L226 Difference]: Without dead ends: 9123 [2021-07-09 18:54:51,238 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 707.7ms TimeCoverageRelationStatistics Valid=228, Invalid=2124, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 18:54:51,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9123 states. [2021-07-09 18:54:51,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9123 to 7019. [2021-07-09 18:54:51,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7019 states, 7018 states have (on average 3.480051296665717) internal successors, (24423), 7018 states have internal predecessors, (24423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:51,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7019 states to 7019 states and 24423 transitions. [2021-07-09 18:54:51,374 INFO L78 Accepts]: Start accepts. Automaton has 7019 states and 24423 transitions. Word has length 39 [2021-07-09 18:54:51,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:51,374 INFO L482 AbstractCegarLoop]: Abstraction has 7019 states and 24423 transitions. [2021-07-09 18:54:51,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:51,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7019 states and 24423 transitions. [2021-07-09 18:54:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:51,386 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:51,386 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:51,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-07-09 18:54:51,386 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:51,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:51,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1049848054, now seen corresponding path program 205 times [2021-07-09 18:54:51,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:51,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514889633] [2021-07-09 18:54:51,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:51,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:51,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514889633] [2021-07-09 18:54:51,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514889633] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:51,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:51,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:51,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255848547] [2021-07-09 18:54:51,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:51,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:51,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:51,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:51,563 INFO L87 Difference]: Start difference. First operand 7019 states and 24423 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:52,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:52,993 INFO L93 Difference]: Finished difference Result 9306 states and 32141 transitions. [2021-07-09 18:54:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 18:54:52,994 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:52,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:53,013 INFO L225 Difference]: With dead ends: 9306 [2021-07-09 18:54:53,013 INFO L226 Difference]: Without dead ends: 9243 [2021-07-09 18:54:53,013 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 714.4ms TimeCoverageRelationStatistics Valid=228, Invalid=2124, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 18:54:53,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9243 states. [2021-07-09 18:54:53,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9243 to 7019. [2021-07-09 18:54:53,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7019 states, 7018 states have (on average 3.479481333713309) internal successors, (24419), 7018 states have internal predecessors, (24419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7019 states to 7019 states and 24419 transitions. [2021-07-09 18:54:53,144 INFO L78 Accepts]: Start accepts. Automaton has 7019 states and 24419 transitions. Word has length 39 [2021-07-09 18:54:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:53,144 INFO L482 AbstractCegarLoop]: Abstraction has 7019 states and 24419 transitions. [2021-07-09 18:54:53,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:53,144 INFO L276 IsEmpty]: Start isEmpty. Operand 7019 states and 24419 transitions. [2021-07-09 18:54:53,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:53,155 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:53,155 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:53,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-07-09 18:54:53,155 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:53,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:53,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1337508750, now seen corresponding path program 206 times [2021-07-09 18:54:53,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:53,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284456747] [2021-07-09 18:54:53,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:53,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:53,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284456747] [2021-07-09 18:54:53,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284456747] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:53,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:53,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:53,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629925856] [2021-07-09 18:54:53,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:53,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:53,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:53,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:53,337 INFO L87 Difference]: Start difference. First operand 7019 states and 24419 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:54,688 INFO L93 Difference]: Finished difference Result 9282 states and 32081 transitions. [2021-07-09 18:54:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-09 18:54:54,688 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:54,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:54,741 INFO L225 Difference]: With dead ends: 9282 [2021-07-09 18:54:54,741 INFO L226 Difference]: Without dead ends: 9239 [2021-07-09 18:54:54,742 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 680.3ms TimeCoverageRelationStatistics Valid=215, Invalid=2041, Unknown=0, NotChecked=0, Total=2256 [2021-07-09 18:54:54,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9239 states. [2021-07-09 18:54:54,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9239 to 7025. [2021-07-09 18:54:54,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7025 states, 7024 states have (on average 3.478359908883827) internal successors, (24432), 7024 states have internal predecessors, (24432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:54,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7025 states to 7025 states and 24432 transitions. [2021-07-09 18:54:54,867 INFO L78 Accepts]: Start accepts. Automaton has 7025 states and 24432 transitions. Word has length 39 [2021-07-09 18:54:54,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:54,867 INFO L482 AbstractCegarLoop]: Abstraction has 7025 states and 24432 transitions. [2021-07-09 18:54:54,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:54,867 INFO L276 IsEmpty]: Start isEmpty. Operand 7025 states and 24432 transitions. [2021-07-09 18:54:54,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:54,878 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:54,878 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:54,878 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-07-09 18:54:54,878 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:54,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:54,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1207351410, now seen corresponding path program 207 times [2021-07-09 18:54:54,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:54,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85469609] [2021-07-09 18:54:54,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:55,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:55,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85469609] [2021-07-09 18:54:55,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85469609] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:55,051 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:55,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:55,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620060917] [2021-07-09 18:54:55,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:55,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:55,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:55,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:55,052 INFO L87 Difference]: Start difference. First operand 7025 states and 24432 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:56,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:56,375 INFO L93 Difference]: Finished difference Result 9237 states and 31977 transitions. [2021-07-09 18:54:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-07-09 18:54:56,375 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:56,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:56,396 INFO L225 Difference]: With dead ends: 9237 [2021-07-09 18:54:56,396 INFO L226 Difference]: Without dead ends: 9174 [2021-07-09 18:54:56,396 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 655.5ms TimeCoverageRelationStatistics Valid=206, Invalid=1956, Unknown=0, NotChecked=0, Total=2162 [2021-07-09 18:54:56,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9174 states. [2021-07-09 18:54:56,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9174 to 7007. [2021-07-09 18:54:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7007 states, 7006 states have (on average 3.4811590065658007) internal successors, (24389), 7006 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:56,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7007 states to 7007 states and 24389 transitions. [2021-07-09 18:54:56,553 INFO L78 Accepts]: Start accepts. Automaton has 7007 states and 24389 transitions. Word has length 39 [2021-07-09 18:54:56,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:56,553 INFO L482 AbstractCegarLoop]: Abstraction has 7007 states and 24389 transitions. [2021-07-09 18:54:56,553 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:56,553 INFO L276 IsEmpty]: Start isEmpty. Operand 7007 states and 24389 transitions. [2021-07-09 18:54:56,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:56,563 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:56,563 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:56,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-07-09 18:54:56,563 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:56,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:56,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1338232586, now seen corresponding path program 208 times [2021-07-09 18:54:56,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:56,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23035805] [2021-07-09 18:54:56,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:56,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:56,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23035805] [2021-07-09 18:54:56,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23035805] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:56,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:56,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:56,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575557932] [2021-07-09 18:54:56,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:56,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:56,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:56,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:56,731 INFO L87 Difference]: Start difference. First operand 7007 states and 24389 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:58,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:58,177 INFO L93 Difference]: Finished difference Result 9300 states and 32134 transitions. [2021-07-09 18:54:58,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 18:54:58,178 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:58,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:58,197 INFO L225 Difference]: With dead ends: 9300 [2021-07-09 18:54:58,197 INFO L226 Difference]: Without dead ends: 9245 [2021-07-09 18:54:58,197 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 758.0ms TimeCoverageRelationStatistics Valid=252, Invalid=2400, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 18:54:58,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9245 states. [2021-07-09 18:54:58,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9245 to 7009. [2021-07-09 18:54:58,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7009 states, 7008 states have (on average 3.4808789954337898) internal successors, (24394), 7008 states have internal predecessors, (24394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:58,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 24394 transitions. [2021-07-09 18:54:58,363 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 24394 transitions. Word has length 39 [2021-07-09 18:54:58,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:54:58,363 INFO L482 AbstractCegarLoop]: Abstraction has 7009 states and 24394 transitions. [2021-07-09 18:54:58,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:58,364 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 24394 transitions. [2021-07-09 18:54:58,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:54:58,374 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:54:58,374 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:54:58,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-07-09 18:54:58,374 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:54:58,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:54:58,374 INFO L82 PathProgramCache]: Analyzing trace with hash -162641940, now seen corresponding path program 209 times [2021-07-09 18:54:58,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:54:58,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751417343] [2021-07-09 18:54:58,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:54:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:54:58,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:54:58,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:54:58,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751417343] [2021-07-09 18:54:58,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751417343] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:54:58,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:54:58,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:54:58,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169082023] [2021-07-09 18:54:58,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:54:58,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:54:58,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:54:58,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:54:58,547 INFO L87 Difference]: Start difference. First operand 7009 states and 24394 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:54:59,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:54:59,932 INFO L93 Difference]: Finished difference Result 9276 states and 32064 transitions. [2021-07-09 18:54:59,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-07-09 18:54:59,933 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:54:59,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:54:59,952 INFO L225 Difference]: With dead ends: 9276 [2021-07-09 18:54:59,952 INFO L226 Difference]: Without dead ends: 9233 [2021-07-09 18:54:59,952 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 714.9ms TimeCoverageRelationStatistics Valid=231, Invalid=2219, Unknown=0, NotChecked=0, Total=2450 [2021-07-09 18:54:59,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9233 states. [2021-07-09 18:55:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9233 to 7015. [2021-07-09 18:55:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7015 states, 7014 states have (on average 3.4797547761619616) internal successors, (24407), 7014 states have internal predecessors, (24407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7015 states to 7015 states and 24407 transitions. [2021-07-09 18:55:00,075 INFO L78 Accepts]: Start accepts. Automaton has 7015 states and 24407 transitions. Word has length 39 [2021-07-09 18:55:00,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:00,075 INFO L482 AbstractCegarLoop]: Abstraction has 7015 states and 24407 transitions. [2021-07-09 18:55:00,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:00,075 INFO L276 IsEmpty]: Start isEmpty. Operand 7015 states and 24407 transitions. [2021-07-09 18:55:00,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:00,123 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:00,123 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:00,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-07-09 18:55:00,123 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:00,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:00,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1817731244, now seen corresponding path program 210 times [2021-07-09 18:55:00,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:00,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645605472] [2021-07-09 18:55:00,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:00,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:00,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645605472] [2021-07-09 18:55:00,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645605472] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:00,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:00,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:00,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216415] [2021-07-09 18:55:00,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:00,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:00,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:00,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:00,306 INFO L87 Difference]: Start difference. First operand 7015 states and 24407 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:01,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:01,671 INFO L93 Difference]: Finished difference Result 9231 states and 31960 transitions. [2021-07-09 18:55:01,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-07-09 18:55:01,671 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:01,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:01,690 INFO L225 Difference]: With dead ends: 9231 [2021-07-09 18:55:01,691 INFO L226 Difference]: Without dead ends: 9170 [2021-07-09 18:55:01,691 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 688.6ms TimeCoverageRelationStatistics Valid=215, Invalid=2041, Unknown=0, NotChecked=0, Total=2256 [2021-07-09 18:55:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9170 states. [2021-07-09 18:55:01,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9170 to 7003. [2021-07-09 18:55:01,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7003 states, 7002 states have (on average 3.4817195087117967) internal successors, (24379), 7002 states have internal predecessors, (24379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:01,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7003 states to 7003 states and 24379 transitions. [2021-07-09 18:55:01,825 INFO L78 Accepts]: Start accepts. Automaton has 7003 states and 24379 transitions. Word has length 39 [2021-07-09 18:55:01,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:01,825 INFO L482 AbstractCegarLoop]: Abstraction has 7003 states and 24379 transitions. [2021-07-09 18:55:01,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:01,825 INFO L276 IsEmpty]: Start isEmpty. Operand 7003 states and 24379 transitions. [2021-07-09 18:55:01,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:01,836 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:01,837 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:01,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-07-09 18:55:01,837 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:01,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:01,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1969318414, now seen corresponding path program 211 times [2021-07-09 18:55:01,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:01,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838448764] [2021-07-09 18:55:01,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:02,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:02,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:02,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838448764] [2021-07-09 18:55:02,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838448764] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:02,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:02,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:02,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171051716] [2021-07-09 18:55:02,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:02,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:02,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:02,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:02,010 INFO L87 Difference]: Start difference. First operand 7003 states and 24379 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:03,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:03,463 INFO L93 Difference]: Finished difference Result 9226 states and 31982 transitions. [2021-07-09 18:55:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 18:55:03,463 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:03,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:03,484 INFO L225 Difference]: With dead ends: 9226 [2021-07-09 18:55:03,485 INFO L226 Difference]: Without dead ends: 9135 [2021-07-09 18:55:03,485 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 717.3ms TimeCoverageRelationStatistics Valid=236, Invalid=2214, Unknown=0, NotChecked=0, Total=2450 [2021-07-09 18:55:03,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9135 states. [2021-07-09 18:55:03,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9135 to 7009. [2021-07-09 18:55:03,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7009 states, 7008 states have (on average 3.4808789954337898) internal successors, (24394), 7008 states have internal predecessors, (24394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7009 states to 7009 states and 24394 transitions. [2021-07-09 18:55:03,630 INFO L78 Accepts]: Start accepts. Automaton has 7009 states and 24394 transitions. Word has length 39 [2021-07-09 18:55:03,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:03,630 INFO L482 AbstractCegarLoop]: Abstraction has 7009 states and 24394 transitions. [2021-07-09 18:55:03,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:03,630 INFO L276 IsEmpty]: Start isEmpty. Operand 7009 states and 24394 transitions. [2021-07-09 18:55:03,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:03,641 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:03,641 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:03,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-07-09 18:55:03,642 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:03,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:03,642 INFO L82 PathProgramCache]: Analyzing trace with hash -973477588, now seen corresponding path program 212 times [2021-07-09 18:55:03,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:03,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480977566] [2021-07-09 18:55:03,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:03,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:03,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480977566] [2021-07-09 18:55:03,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480977566] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:03,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:03,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:03,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955948034] [2021-07-09 18:55:03,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:03,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:03,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:03,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:03,817 INFO L87 Difference]: Start difference. First operand 7009 states and 24394 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:05,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:05,312 INFO L93 Difference]: Finished difference Result 9257 states and 32029 transitions. [2021-07-09 18:55:05,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-09 18:55:05,313 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:05,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:05,334 INFO L225 Difference]: With dead ends: 9257 [2021-07-09 18:55:05,334 INFO L226 Difference]: Without dead ends: 9202 [2021-07-09 18:55:05,334 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 770.1ms TimeCoverageRelationStatistics Valid=252, Invalid=2400, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 18:55:05,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9202 states. [2021-07-09 18:55:05,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9202 to 7011. [2021-07-09 18:55:05,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7011 states, 7010 states have (on average 3.480599144079886) internal successors, (24399), 7010 states have internal predecessors, (24399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:05,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7011 states to 7011 states and 24399 transitions. [2021-07-09 18:55:05,480 INFO L78 Accepts]: Start accepts. Automaton has 7011 states and 24399 transitions. Word has length 39 [2021-07-09 18:55:05,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:05,480 INFO L482 AbstractCegarLoop]: Abstraction has 7011 states and 24399 transitions. [2021-07-09 18:55:05,480 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:05,480 INFO L276 IsEmpty]: Start isEmpty. Operand 7011 states and 24399 transitions. [2021-07-09 18:55:05,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:05,492 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:05,492 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:05,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-07-09 18:55:05,492 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:05,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:05,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1820615182, now seen corresponding path program 213 times [2021-07-09 18:55:05,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:05,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736483676] [2021-07-09 18:55:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:05,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:05,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736483676] [2021-07-09 18:55:05,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736483676] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:05,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:05,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:05,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175470615] [2021-07-09 18:55:05,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:05,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:05,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:05,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:05,674 INFO L87 Difference]: Start difference. First operand 7011 states and 24399 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:07,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:07,114 INFO L93 Difference]: Finished difference Result 9233 states and 31959 transitions. [2021-07-09 18:55:07,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 18:55:07,115 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:07,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:07,134 INFO L225 Difference]: With dead ends: 9233 [2021-07-09 18:55:07,134 INFO L226 Difference]: Without dead ends: 9190 [2021-07-09 18:55:07,134 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 725.2ms TimeCoverageRelationStatistics Valid=229, Invalid=2221, Unknown=0, NotChecked=0, Total=2450 [2021-07-09 18:55:07,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9190 states. [2021-07-09 18:55:07,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9190 to 7017. [2021-07-09 18:55:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7017 states, 7016 states have (on average 3.4794754846066134) internal successors, (24412), 7016 states have internal predecessors, (24412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7017 states to 7017 states and 24412 transitions. [2021-07-09 18:55:07,260 INFO L78 Accepts]: Start accepts. Automaton has 7017 states and 24412 transitions. Word has length 39 [2021-07-09 18:55:07,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:07,260 INFO L482 AbstractCegarLoop]: Abstraction has 7017 states and 24412 transitions. [2021-07-09 18:55:07,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:07,260 INFO L276 IsEmpty]: Start isEmpty. Operand 7017 states and 24412 transitions. [2021-07-09 18:55:07,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:07,270 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:07,270 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:07,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-07-09 18:55:07,270 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:07,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:07,270 INFO L82 PathProgramCache]: Analyzing trace with hash -493978930, now seen corresponding path program 214 times [2021-07-09 18:55:07,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:07,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282646970] [2021-07-09 18:55:07,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:07,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:07,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282646970] [2021-07-09 18:55:07,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282646970] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:07,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:07,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:07,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293403398] [2021-07-09 18:55:07,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:07,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:07,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:07,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:07,447 INFO L87 Difference]: Start difference. First operand 7017 states and 24412 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:08,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:08,848 INFO L93 Difference]: Finished difference Result 9188 states and 31855 transitions. [2021-07-09 18:55:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 18:55:08,848 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:08,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:08,867 INFO L225 Difference]: With dead ends: 9188 [2021-07-09 18:55:08,867 INFO L226 Difference]: Without dead ends: 9097 [2021-07-09 18:55:08,867 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 709.3ms TimeCoverageRelationStatistics Valid=229, Invalid=2221, Unknown=0, NotChecked=0, Total=2450 [2021-07-09 18:55:08,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9097 states. [2021-07-09 18:55:08,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9097 to 6987. [2021-07-09 18:55:08,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6987 states, 6986 states have (on average 3.4836816490123104) internal successors, (24337), 6986 states have internal predecessors, (24337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6987 states to 6987 states and 24337 transitions. [2021-07-09 18:55:08,991 INFO L78 Accepts]: Start accepts. Automaton has 6987 states and 24337 transitions. Word has length 39 [2021-07-09 18:55:08,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:08,991 INFO L482 AbstractCegarLoop]: Abstraction has 6987 states and 24337 transitions. [2021-07-09 18:55:08,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:08,991 INFO L276 IsEmpty]: Start isEmpty. Operand 6987 states and 24337 transitions. [2021-07-09 18:55:09,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:09,001 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:09,001 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:09,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-07-09 18:55:09,001 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:09,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:09,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1105047138, now seen corresponding path program 215 times [2021-07-09 18:55:09,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:09,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609018450] [2021-07-09 18:55:09,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:09,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:09,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609018450] [2021-07-09 18:55:09,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609018450] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:09,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:09,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:09,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827354514] [2021-07-09 18:55:09,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:09,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:09,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:09,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:09,167 INFO L87 Difference]: Start difference. First operand 6987 states and 24337 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:10,908 INFO L93 Difference]: Finished difference Result 9481 states and 32641 transitions. [2021-07-09 18:55:10,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-07-09 18:55:10,909 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:10,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:10,930 INFO L225 Difference]: With dead ends: 9481 [2021-07-09 18:55:10,931 INFO L226 Difference]: Without dead ends: 9426 [2021-07-09 18:55:10,931 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 984.2ms TimeCoverageRelationStatistics Valid=345, Invalid=3315, Unknown=0, NotChecked=0, Total=3660 [2021-07-09 18:55:10,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9426 states. [2021-07-09 18:55:11,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9426 to 6998. [2021-07-09 18:55:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6998 states, 6997 states have (on average 3.4833500071459196) internal successors, (24373), 6997 states have internal predecessors, (24373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:11,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6998 states to 6998 states and 24373 transitions. [2021-07-09 18:55:11,062 INFO L78 Accepts]: Start accepts. Automaton has 6998 states and 24373 transitions. Word has length 39 [2021-07-09 18:55:11,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:11,062 INFO L482 AbstractCegarLoop]: Abstraction has 6998 states and 24373 transitions. [2021-07-09 18:55:11,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:11,062 INFO L276 IsEmpty]: Start isEmpty. Operand 6998 states and 24373 transitions. [2021-07-09 18:55:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:11,073 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:11,073 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:11,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-07-09 18:55:11,073 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:11,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:11,073 INFO L82 PathProgramCache]: Analyzing trace with hash 67605084, now seen corresponding path program 216 times [2021-07-09 18:55:11,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:11,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934003975] [2021-07-09 18:55:11,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:11,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:11,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:11,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934003975] [2021-07-09 18:55:11,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934003975] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:11,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:11,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:11,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821115024] [2021-07-09 18:55:11,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:11,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:11,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:11,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:11,250 INFO L87 Difference]: Start difference. First operand 6998 states and 24373 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:13,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:13,279 INFO L93 Difference]: Finished difference Result 10730 states and 36770 transitions. [2021-07-09 18:55:13,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-09 18:55:13,279 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:13,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:13,301 INFO L225 Difference]: With dead ends: 10730 [2021-07-09 18:55:13,301 INFO L226 Difference]: Without dead ends: 10607 [2021-07-09 18:55:13,302 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 1117.7ms TimeCoverageRelationStatistics Valid=390, Invalid=4032, Unknown=0, NotChecked=0, Total=4422 [2021-07-09 18:55:13,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10607 states. [2021-07-09 18:55:13,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10607 to 7002. [2021-07-09 18:55:13,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7002 states, 7001 states have (on average 3.4836451935437793) internal successors, (24389), 7001 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:13,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7002 states to 7002 states and 24389 transitions. [2021-07-09 18:55:13,439 INFO L78 Accepts]: Start accepts. Automaton has 7002 states and 24389 transitions. Word has length 39 [2021-07-09 18:55:13,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:13,439 INFO L482 AbstractCegarLoop]: Abstraction has 7002 states and 24389 transitions. [2021-07-09 18:55:13,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:13,439 INFO L276 IsEmpty]: Start isEmpty. Operand 7002 states and 24389 transitions. [2021-07-09 18:55:13,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:13,449 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:13,449 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:13,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-07-09 18:55:13,449 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:13,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:13,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1809798518, now seen corresponding path program 217 times [2021-07-09 18:55:13,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:13,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647782701] [2021-07-09 18:55:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:13,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:13,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647782701] [2021-07-09 18:55:13,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647782701] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:13,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:13,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:13,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139130829] [2021-07-09 18:55:13,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:13,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:13,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:13,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:13,623 INFO L87 Difference]: Start difference. First operand 7002 states and 24389 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:15,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:15,310 INFO L93 Difference]: Finished difference Result 9406 states and 32467 transitions. [2021-07-09 18:55:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-09 18:55:15,310 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:15,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:15,329 INFO L225 Difference]: With dead ends: 9406 [2021-07-09 18:55:15,330 INFO L226 Difference]: Without dead ends: 9315 [2021-07-09 18:55:15,330 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 947.5ms TimeCoverageRelationStatistics Valid=318, Invalid=3104, Unknown=0, NotChecked=0, Total=3422 [2021-07-09 18:55:15,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9315 states. [2021-07-09 18:55:15,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9315 to 7008. [2021-07-09 18:55:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7008 states, 7007 states have (on average 3.4819466248037676) internal successors, (24398), 7007 states have internal predecessors, (24398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:15,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 24398 transitions. [2021-07-09 18:55:15,457 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 24398 transitions. Word has length 39 [2021-07-09 18:55:15,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:15,457 INFO L482 AbstractCegarLoop]: Abstraction has 7008 states and 24398 transitions. [2021-07-09 18:55:15,457 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 24398 transitions. [2021-07-09 18:55:15,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:15,467 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:15,467 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:15,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-07-09 18:55:15,467 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:15,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:15,467 INFO L82 PathProgramCache]: Analyzing trace with hash 982686572, now seen corresponding path program 218 times [2021-07-09 18:55:15,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:15,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130000470] [2021-07-09 18:55:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:15,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:15,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130000470] [2021-07-09 18:55:15,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130000470] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:15,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:15,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:15,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78232629] [2021-07-09 18:55:15,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:15,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:15,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:15,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:15,643 INFO L87 Difference]: Start difference. First operand 7008 states and 24398 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:17,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:17,646 INFO L93 Difference]: Finished difference Result 10679 states and 36750 transitions. [2021-07-09 18:55:17,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-07-09 18:55:17,647 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:17,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:17,669 INFO L225 Difference]: With dead ends: 10679 [2021-07-09 18:55:17,669 INFO L226 Difference]: Without dead ends: 10579 [2021-07-09 18:55:17,670 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1077.2ms TimeCoverageRelationStatistics Valid=353, Invalid=3679, Unknown=0, NotChecked=0, Total=4032 [2021-07-09 18:55:17,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10579 states. [2021-07-09 18:55:17,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10579 to 7002. [2021-07-09 18:55:17,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7002 states, 7001 states have (on average 3.4817883159548635) internal successors, (24376), 7001 states have internal predecessors, (24376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:17,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7002 states to 7002 states and 24376 transitions. [2021-07-09 18:55:17,853 INFO L78 Accepts]: Start accepts. Automaton has 7002 states and 24376 transitions. Word has length 39 [2021-07-09 18:55:17,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:17,853 INFO L482 AbstractCegarLoop]: Abstraction has 7002 states and 24376 transitions. [2021-07-09 18:55:17,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:17,853 INFO L276 IsEmpty]: Start isEmpty. Operand 7002 states and 24376 transitions. [2021-07-09 18:55:17,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:17,863 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:17,863 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:17,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-07-09 18:55:17,863 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:17,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:17,863 INFO L82 PathProgramCache]: Analyzing trace with hash -2137409984, now seen corresponding path program 219 times [2021-07-09 18:55:17,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:17,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030631051] [2021-07-09 18:55:17,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:18,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:18,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:18,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030631051] [2021-07-09 18:55:18,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030631051] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:18,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:18,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:18,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471622465] [2021-07-09 18:55:18,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:18,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:18,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:18,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:18,035 INFO L87 Difference]: Start difference. First operand 7002 states and 24376 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:19,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:19,889 INFO L93 Difference]: Finished difference Result 9391 states and 32328 transitions. [2021-07-09 18:55:19,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-07-09 18:55:19,889 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:19,908 INFO L225 Difference]: With dead ends: 9391 [2021-07-09 18:55:19,908 INFO L226 Difference]: Without dead ends: 9336 [2021-07-09 18:55:19,909 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 1079.0ms TimeCoverageRelationStatistics Valid=367, Invalid=3665, Unknown=0, NotChecked=0, Total=4032 [2021-07-09 18:55:19,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9336 states. [2021-07-09 18:55:20,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9336 to 7007. [2021-07-09 18:55:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7007 states, 7006 states have (on average 3.4810162717670567) internal successors, (24388), 7006 states have internal predecessors, (24388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7007 states to 7007 states and 24388 transitions. [2021-07-09 18:55:20,052 INFO L78 Accepts]: Start accepts. Automaton has 7007 states and 24388 transitions. Word has length 39 [2021-07-09 18:55:20,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:20,052 INFO L482 AbstractCegarLoop]: Abstraction has 7007 states and 24388 transitions. [2021-07-09 18:55:20,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 7007 states and 24388 transitions. [2021-07-09 18:55:20,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:20,062 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:20,062 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:20,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-07-09 18:55:20,063 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:20,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:20,063 INFO L82 PathProgramCache]: Analyzing trace with hash -964757762, now seen corresponding path program 220 times [2021-07-09 18:55:20,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:20,063 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069072205] [2021-07-09 18:55:20,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:20,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:20,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069072205] [2021-07-09 18:55:20,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069072205] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:20,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:20,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:20,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477489111] [2021-07-09 18:55:20,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:20,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:20,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:20,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:20,237 INFO L87 Difference]: Start difference. First operand 7007 states and 24388 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:22,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:22,372 INFO L93 Difference]: Finished difference Result 10532 states and 36209 transitions. [2021-07-09 18:55:22,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-07-09 18:55:22,372 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:22,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:22,392 INFO L225 Difference]: With dead ends: 10532 [2021-07-09 18:55:22,393 INFO L226 Difference]: Without dead ends: 10472 [2021-07-09 18:55:22,393 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 1233.9ms TimeCoverageRelationStatistics Valid=392, Invalid=4030, Unknown=0, NotChecked=0, Total=4422 [2021-07-09 18:55:22,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10472 states. [2021-07-09 18:55:22,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10472 to 7007. [2021-07-09 18:55:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7007 states, 7006 states have (on average 3.4811590065658007) internal successors, (24389), 7006 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:22,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7007 states to 7007 states and 24389 transitions. [2021-07-09 18:55:22,521 INFO L78 Accepts]: Start accepts. Automaton has 7007 states and 24389 transitions. Word has length 39 [2021-07-09 18:55:22,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:22,522 INFO L482 AbstractCegarLoop]: Abstraction has 7007 states and 24389 transitions. [2021-07-09 18:55:22,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:22,522 INFO L276 IsEmpty]: Start isEmpty. Operand 7007 states and 24389 transitions. [2021-07-09 18:55:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:22,532 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:22,532 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:22,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-07-09 18:55:22,532 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:22,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:22,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1032502642, now seen corresponding path program 221 times [2021-07-09 18:55:22,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:22,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876045494] [2021-07-09 18:55:22,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:22,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:22,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876045494] [2021-07-09 18:55:22,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876045494] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:22,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:22,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:22,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100454214] [2021-07-09 18:55:22,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:22,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:22,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:22,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:22,708 INFO L87 Difference]: Start difference. First operand 7007 states and 24389 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:24,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:24,470 INFO L93 Difference]: Finished difference Result 9320 states and 32148 transitions. [2021-07-09 18:55:24,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 18:55:24,470 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:24,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:24,488 INFO L225 Difference]: With dead ends: 9320 [2021-07-09 18:55:24,488 INFO L226 Difference]: Without dead ends: 9277 [2021-07-09 18:55:24,488 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 998.8ms TimeCoverageRelationStatistics Valid=311, Invalid=3111, Unknown=0, NotChecked=0, Total=3422 [2021-07-09 18:55:24,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9277 states. [2021-07-09 18:55:24,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9277 to 7016. [2021-07-09 18:55:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7015 states have (on average 3.479686386315039) internal successors, (24410), 7015 states have internal predecessors, (24410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 24410 transitions. [2021-07-09 18:55:24,607 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 24410 transitions. Word has length 39 [2021-07-09 18:55:24,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:24,607 INFO L482 AbstractCegarLoop]: Abstraction has 7016 states and 24410 transitions. [2021-07-09 18:55:24,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:24,607 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 24410 transitions. [2021-07-09 18:55:24,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:24,617 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:24,617 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:24,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-07-09 18:55:24,617 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:24,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:24,618 INFO L82 PathProgramCache]: Analyzing trace with hash 717604494, now seen corresponding path program 222 times [2021-07-09 18:55:24,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:24,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184500196] [2021-07-09 18:55:24,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:24,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:24,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:24,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184500196] [2021-07-09 18:55:24,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184500196] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:24,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:24,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:24,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719243763] [2021-07-09 18:55:24,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:24,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:24,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:24,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:24,791 INFO L87 Difference]: Start difference. First operand 7016 states and 24410 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:26,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:26,390 INFO L93 Difference]: Finished difference Result 9308 states and 32114 transitions. [2021-07-09 18:55:26,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-09 18:55:26,391 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:26,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:26,409 INFO L225 Difference]: With dead ends: 9308 [2021-07-09 18:55:26,409 INFO L226 Difference]: Without dead ends: 9257 [2021-07-09 18:55:26,410 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 845.1ms TimeCoverageRelationStatistics Valid=280, Invalid=2690, Unknown=0, NotChecked=0, Total=2970 [2021-07-09 18:55:26,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9257 states. [2021-07-09 18:55:26,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9257 to 7016. [2021-07-09 18:55:26,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 7015 states have (on average 3.4792587312900927) internal successors, (24407), 7015 states have internal predecessors, (24407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 24407 transitions. [2021-07-09 18:55:26,530 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 24407 transitions. Word has length 39 [2021-07-09 18:55:26,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:26,530 INFO L482 AbstractCegarLoop]: Abstraction has 7016 states and 24407 transitions. [2021-07-09 18:55:26,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:26,530 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 24407 transitions. [2021-07-09 18:55:26,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:26,540 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:26,540 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:26,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-07-09 18:55:26,541 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:26,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:26,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1334822896, now seen corresponding path program 223 times [2021-07-09 18:55:26,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:26,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534903066] [2021-07-09 18:55:26,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:26,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:26,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534903066] [2021-07-09 18:55:26,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534903066] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:26,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:26,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:26,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919858448] [2021-07-09 18:55:26,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:26,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:26,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:26,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:26,715 INFO L87 Difference]: Start difference. First operand 7016 states and 24407 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:28,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:28,782 INFO L93 Difference]: Finished difference Result 10505 states and 36124 transitions. [2021-07-09 18:55:28,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-07-09 18:55:28,782 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:28,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:28,803 INFO L225 Difference]: With dead ends: 10505 [2021-07-09 18:55:28,803 INFO L226 Difference]: Without dead ends: 10459 [2021-07-09 18:55:28,804 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1025 ImplicationChecksByTransitivity, 1155.0ms TimeCoverageRelationStatistics Valid=353, Invalid=3679, Unknown=0, NotChecked=0, Total=4032 [2021-07-09 18:55:28,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10459 states. [2021-07-09 18:55:28,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10459 to 7023. [2021-07-09 18:55:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7023 states, 7022 states have (on average 3.4779265166619195) internal successors, (24422), 7022 states have internal predecessors, (24422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 24422 transitions. [2021-07-09 18:55:28,936 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 24422 transitions. Word has length 39 [2021-07-09 18:55:28,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:28,936 INFO L482 AbstractCegarLoop]: Abstraction has 7023 states and 24422 transitions. [2021-07-09 18:55:28,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 24422 transitions. [2021-07-09 18:55:28,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:28,946 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:28,946 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:28,947 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-07-09 18:55:28,947 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:28,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:28,947 INFO L82 PathProgramCache]: Analyzing trace with hash -100244594, now seen corresponding path program 224 times [2021-07-09 18:55:28,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:28,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708547196] [2021-07-09 18:55:28,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:29,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:29,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708547196] [2021-07-09 18:55:29,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708547196] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:29,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:29,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:29,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690644228] [2021-07-09 18:55:29,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:29,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:29,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:29,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:29,125 INFO L87 Difference]: Start difference. First operand 7023 states and 24422 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:30,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:30,720 INFO L93 Difference]: Finished difference Result 9294 states and 32067 transitions. [2021-07-09 18:55:30,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-09 18:55:30,720 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:30,739 INFO L225 Difference]: With dead ends: 9294 [2021-07-09 18:55:30,739 INFO L226 Difference]: Without dead ends: 9239 [2021-07-09 18:55:30,740 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 853.0ms TimeCoverageRelationStatistics Valid=280, Invalid=2690, Unknown=0, NotChecked=0, Total=2970 [2021-07-09 18:55:30,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9239 states. [2021-07-09 18:55:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9239 to 7020. [2021-07-09 18:55:30,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7020 states, 7019 states have (on average 3.4785581991736714) internal successors, (24416), 7019 states have internal predecessors, (24416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:30,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7020 states to 7020 states and 24416 transitions. [2021-07-09 18:55:30,865 INFO L78 Accepts]: Start accepts. Automaton has 7020 states and 24416 transitions. Word has length 39 [2021-07-09 18:55:30,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:30,865 INFO L482 AbstractCegarLoop]: Abstraction has 7020 states and 24416 transitions. [2021-07-09 18:55:30,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 7020 states and 24416 transitions. [2021-07-09 18:55:30,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:30,875 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:30,875 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:30,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-07-09 18:55:30,875 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:30,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:30,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1382947712, now seen corresponding path program 225 times [2021-07-09 18:55:30,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:30,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556307568] [2021-07-09 18:55:30,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:31,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:31,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556307568] [2021-07-09 18:55:31,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556307568] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:31,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:31,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:31,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535954593] [2021-07-09 18:55:31,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:31,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:31,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:31,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:31,049 INFO L87 Difference]: Start difference. First operand 7020 states and 24416 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:32,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:32,691 INFO L93 Difference]: Finished difference Result 9347 states and 32183 transitions. [2021-07-09 18:55:32,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-07-09 18:55:32,691 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:32,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:32,710 INFO L225 Difference]: With dead ends: 9347 [2021-07-09 18:55:32,711 INFO L226 Difference]: Without dead ends: 9290 [2021-07-09 18:55:32,711 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 885.2ms TimeCoverageRelationStatistics Valid=299, Invalid=2893, Unknown=0, NotChecked=0, Total=3192 [2021-07-09 18:55:32,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9290 states. [2021-07-09 18:55:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9290 to 7020. [2021-07-09 18:55:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7020 states, 7019 states have (on average 3.4784157287362873) internal successors, (24415), 7019 states have internal predecessors, (24415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7020 states to 7020 states and 24415 transitions. [2021-07-09 18:55:32,836 INFO L78 Accepts]: Start accepts. Automaton has 7020 states and 24415 transitions. Word has length 39 [2021-07-09 18:55:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:32,836 INFO L482 AbstractCegarLoop]: Abstraction has 7020 states and 24415 transitions. [2021-07-09 18:55:32,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 7020 states and 24415 transitions. [2021-07-09 18:55:32,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:32,848 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:32,848 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:32,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-07-09 18:55:32,848 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:32,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:32,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1194541404, now seen corresponding path program 226 times [2021-07-09 18:55:32,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:32,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951795922] [2021-07-09 18:55:32,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:33,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:33,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951795922] [2021-07-09 18:55:33,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951795922] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:33,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:33,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:33,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530011729] [2021-07-09 18:55:33,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:33,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:33,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:33,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:33,032 INFO L87 Difference]: Start difference. First operand 7020 states and 24415 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:34,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:34,764 INFO L93 Difference]: Finished difference Result 9598 states and 33031 transitions. [2021-07-09 18:55:34,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-09 18:55:34,764 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:34,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:34,783 INFO L225 Difference]: With dead ends: 9598 [2021-07-09 18:55:34,784 INFO L226 Difference]: Without dead ends: 9539 [2021-07-09 18:55:34,784 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 962.4ms TimeCoverageRelationStatistics Valid=316, Invalid=3106, Unknown=0, NotChecked=0, Total=3422 [2021-07-09 18:55:34,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9539 states. [2021-07-09 18:55:34,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9539 to 7019. [2021-07-09 18:55:34,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7019 states, 7018 states have (on average 3.4786263892846967) internal successors, (24413), 7018 states have internal predecessors, (24413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7019 states to 7019 states and 24413 transitions. [2021-07-09 18:55:34,910 INFO L78 Accepts]: Start accepts. Automaton has 7019 states and 24413 transitions. Word has length 39 [2021-07-09 18:55:34,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:34,910 INFO L482 AbstractCegarLoop]: Abstraction has 7019 states and 24413 transitions. [2021-07-09 18:55:34,910 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:34,910 INFO L276 IsEmpty]: Start isEmpty. Operand 7019 states and 24413 transitions. [2021-07-09 18:55:34,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:34,921 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:34,921 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:34,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-07-09 18:55:34,921 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:34,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:34,921 INFO L82 PathProgramCache]: Analyzing trace with hash -44191124, now seen corresponding path program 227 times [2021-07-09 18:55:34,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:34,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582709353] [2021-07-09 18:55:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:35,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:35,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582709353] [2021-07-09 18:55:35,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582709353] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:35,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:35,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:35,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110971671] [2021-07-09 18:55:35,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:35,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:35,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:35,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:35,092 INFO L87 Difference]: Start difference. First operand 7019 states and 24413 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:36,683 INFO L93 Difference]: Finished difference Result 9294 states and 32083 transitions. [2021-07-09 18:55:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 18:55:36,683 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:36,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:36,702 INFO L225 Difference]: With dead ends: 9294 [2021-07-09 18:55:36,703 INFO L226 Difference]: Without dead ends: 9219 [2021-07-09 18:55:36,703 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 832.4ms TimeCoverageRelationStatistics Valid=282, Invalid=2798, Unknown=0, NotChecked=0, Total=3080 [2021-07-09 18:55:36,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9219 states. [2021-07-09 18:55:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9219 to 7005. [2021-07-09 18:55:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7005 states, 7004 states have (on average 3.48043974871502) internal successors, (24377), 7004 states have internal predecessors, (24377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:36,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7005 states to 7005 states and 24377 transitions. [2021-07-09 18:55:36,830 INFO L78 Accepts]: Start accepts. Automaton has 7005 states and 24377 transitions. Word has length 39 [2021-07-09 18:55:36,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:36,830 INFO L482 AbstractCegarLoop]: Abstraction has 7005 states and 24377 transitions. [2021-07-09 18:55:36,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:36,830 INFO L276 IsEmpty]: Start isEmpty. Operand 7005 states and 24377 transitions. [2021-07-09 18:55:36,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:36,840 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:36,840 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:36,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-07-09 18:55:36,840 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:36,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:36,840 INFO L82 PathProgramCache]: Analyzing trace with hash 119555692, now seen corresponding path program 228 times [2021-07-09 18:55:36,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:36,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149582762] [2021-07-09 18:55:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:37,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:37,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149582762] [2021-07-09 18:55:37,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149582762] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:37,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:37,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:37,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448922283] [2021-07-09 18:55:37,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:37,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:37,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:37,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:37,013 INFO L87 Difference]: Start difference. First operand 7005 states and 24377 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:38,899 INFO L93 Difference]: Finished difference Result 9664 states and 33390 transitions. [2021-07-09 18:55:38,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-09 18:55:38,899 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:38,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:38,919 INFO L225 Difference]: With dead ends: 9664 [2021-07-09 18:55:38,919 INFO L226 Difference]: Without dead ends: 9569 [2021-07-09 18:55:38,919 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 975.3ms TimeCoverageRelationStatistics Valid=327, Invalid=3333, Unknown=0, NotChecked=0, Total=3660 [2021-07-09 18:55:38,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9569 states. [2021-07-09 18:55:39,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9569 to 6979. [2021-07-09 18:55:39,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 6978 states have (on average 3.483519633132703) internal successors, (24308), 6978 states have internal predecessors, (24308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:39,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 24308 transitions. [2021-07-09 18:55:39,049 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 24308 transitions. Word has length 39 [2021-07-09 18:55:39,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:39,049 INFO L482 AbstractCegarLoop]: Abstraction has 6979 states and 24308 transitions. [2021-07-09 18:55:39,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:39,049 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 24308 transitions. [2021-07-09 18:55:39,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:39,059 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:39,059 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:39,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-07-09 18:55:39,060 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:39,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:39,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2048360754, now seen corresponding path program 229 times [2021-07-09 18:55:39,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:39,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962217477] [2021-07-09 18:55:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:39,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:39,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962217477] [2021-07-09 18:55:39,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962217477] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:39,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:39,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:39,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580998302] [2021-07-09 18:55:39,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:39,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:39,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:39,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:39,235 INFO L87 Difference]: Start difference. First operand 6979 states and 24308 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:43,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:43,227 INFO L93 Difference]: Finished difference Result 12981 states and 44182 transitions. [2021-07-09 18:55:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-07-09 18:55:43,227 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:43,257 INFO L225 Difference]: With dead ends: 12981 [2021-07-09 18:55:43,257 INFO L226 Difference]: Without dead ends: 12875 [2021-07-09 18:55:43,258 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3575 ImplicationChecksByTransitivity, 2139.5ms TimeCoverageRelationStatistics Valid=739, Invalid=9973, Unknown=0, NotChecked=0, Total=10712 [2021-07-09 18:55:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12875 states. [2021-07-09 18:55:43,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12875 to 7021. [2021-07-09 18:55:43,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7021 states, 7020 states have (on average 3.4853276353276352) internal successors, (24467), 7020 states have internal predecessors, (24467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7021 states to 7021 states and 24467 transitions. [2021-07-09 18:55:43,431 INFO L78 Accepts]: Start accepts. Automaton has 7021 states and 24467 transitions. Word has length 39 [2021-07-09 18:55:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:43,431 INFO L482 AbstractCegarLoop]: Abstraction has 7021 states and 24467 transitions. [2021-07-09 18:55:43,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:43,431 INFO L276 IsEmpty]: Start isEmpty. Operand 7021 states and 24467 transitions. [2021-07-09 18:55:43,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:43,442 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:43,442 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:43,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-07-09 18:55:43,443 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:43,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:43,443 INFO L82 PathProgramCache]: Analyzing trace with hash 751715642, now seen corresponding path program 230 times [2021-07-09 18:55:43,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:43,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174949567] [2021-07-09 18:55:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:43,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:43,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174949567] [2021-07-09 18:55:43,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174949567] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:43,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:43,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:43,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239903488] [2021-07-09 18:55:43,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:43,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:43,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:43,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:43,630 INFO L87 Difference]: Start difference. First operand 7021 states and 24467 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:45,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:45,841 INFO L93 Difference]: Finished difference Result 10377 states and 35684 transitions. [2021-07-09 18:55:45,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-07-09 18:55:45,841 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:45,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:45,863 INFO L225 Difference]: With dead ends: 10377 [2021-07-09 18:55:45,863 INFO L226 Difference]: Without dead ends: 10313 [2021-07-09 18:55:45,864 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 1306.3ms TimeCoverageRelationStatistics Valid=422, Invalid=4980, Unknown=0, NotChecked=0, Total=5402 [2021-07-09 18:55:45,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10313 states. [2021-07-09 18:55:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10313 to 7039. [2021-07-09 18:55:46,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7039 states, 7038 states have (on average 3.4857914180164817) internal successors, (24533), 7038 states have internal predecessors, (24533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:46,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7039 states to 7039 states and 24533 transitions. [2021-07-09 18:55:46,026 INFO L78 Accepts]: Start accepts. Automaton has 7039 states and 24533 transitions. Word has length 39 [2021-07-09 18:55:46,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:46,027 INFO L482 AbstractCegarLoop]: Abstraction has 7039 states and 24533 transitions. [2021-07-09 18:55:46,027 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:46,027 INFO L276 IsEmpty]: Start isEmpty. Operand 7039 states and 24533 transitions. [2021-07-09 18:55:46,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:46,037 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:46,037 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:46,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-07-09 18:55:46,037 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:46,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:46,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1670199212, now seen corresponding path program 231 times [2021-07-09 18:55:46,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:46,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61923721] [2021-07-09 18:55:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:46,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:46,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61923721] [2021-07-09 18:55:46,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61923721] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:46,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:46,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:46,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052811825] [2021-07-09 18:55:46,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:46,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:46,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:46,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:46,210 INFO L87 Difference]: Start difference. First operand 7039 states and 24533 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:47,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:47,598 INFO L93 Difference]: Finished difference Result 9481 states and 32651 transitions. [2021-07-09 18:55:47,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-09 18:55:47,598 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:47,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:47,617 INFO L225 Difference]: With dead ends: 9481 [2021-07-09 18:55:47,618 INFO L226 Difference]: Without dead ends: 9438 [2021-07-09 18:55:47,618 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 711.9ms TimeCoverageRelationStatistics Valid=236, Invalid=2314, Unknown=0, NotChecked=0, Total=2550 [2021-07-09 18:55:47,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9438 states. [2021-07-09 18:55:47,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9438 to 7067. [2021-07-09 18:55:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7067 states, 7066 states have (on average 3.484574016416643) internal successors, (24622), 7066 states have internal predecessors, (24622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7067 states to 7067 states and 24622 transitions. [2021-07-09 18:55:47,794 INFO L78 Accepts]: Start accepts. Automaton has 7067 states and 24622 transitions. Word has length 39 [2021-07-09 18:55:47,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:47,794 INFO L482 AbstractCegarLoop]: Abstraction has 7067 states and 24622 transitions. [2021-07-09 18:55:47,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:47,794 INFO L276 IsEmpty]: Start isEmpty. Operand 7067 states and 24622 transitions. [2021-07-09 18:55:47,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:47,804 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:47,804 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:47,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-07-09 18:55:47,804 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:47,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1690347946, now seen corresponding path program 232 times [2021-07-09 18:55:47,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:47,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985366029] [2021-07-09 18:55:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:47,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:47,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:47,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985366029] [2021-07-09 18:55:47,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985366029] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:47,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:47,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:47,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951962078] [2021-07-09 18:55:47,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:47,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:47,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:47,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:47,984 INFO L87 Difference]: Start difference. First operand 7067 states and 24622 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:49,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:49,519 INFO L93 Difference]: Finished difference Result 9597 states and 33004 transitions. [2021-07-09 18:55:49,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 18:55:49,519 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:49,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:49,539 INFO L225 Difference]: With dead ends: 9597 [2021-07-09 18:55:49,539 INFO L226 Difference]: Without dead ends: 9554 [2021-07-09 18:55:49,539 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 821.1ms TimeCoverageRelationStatistics Valid=262, Invalid=2600, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:55:49,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9554 states. [2021-07-09 18:55:49,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9554 to 7063. [2021-07-09 18:55:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 7062 states have (on average 3.485131690739167) internal successors, (24612), 7062 states have internal predecessors, (24612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 24612 transitions. [2021-07-09 18:55:49,698 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 24612 transitions. Word has length 39 [2021-07-09 18:55:49,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:49,699 INFO L482 AbstractCegarLoop]: Abstraction has 7063 states and 24612 transitions. [2021-07-09 18:55:49,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:49,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 24612 transitions. [2021-07-09 18:55:49,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:49,709 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:49,709 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:49,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-07-09 18:55:49,709 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:49,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:49,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1452115862, now seen corresponding path program 233 times [2021-07-09 18:55:49,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:49,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271357677] [2021-07-09 18:55:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:49,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:49,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:49,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271357677] [2021-07-09 18:55:49,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271357677] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:49,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:49,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:49,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198769212] [2021-07-09 18:55:49,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:49,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:49,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:49,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:49,881 INFO L87 Difference]: Start difference. First operand 7063 states and 24612 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:51,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:51,742 INFO L93 Difference]: Finished difference Result 10704 states and 36777 transitions. [2021-07-09 18:55:51,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-07-09 18:55:51,742 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:51,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:51,765 INFO L225 Difference]: With dead ends: 10704 [2021-07-09 18:55:51,765 INFO L226 Difference]: Without dead ends: 10644 [2021-07-09 18:55:51,765 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 978.0ms TimeCoverageRelationStatistics Valid=318, Invalid=3342, Unknown=0, NotChecked=0, Total=3660 [2021-07-09 18:55:51,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10644 states. [2021-07-09 18:55:51,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10644 to 7057. [2021-07-09 18:55:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7057 states, 7056 states have (on average 3.48625283446712) internal successors, (24599), 7056 states have internal predecessors, (24599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7057 states to 7057 states and 24599 transitions. [2021-07-09 18:55:51,929 INFO L78 Accepts]: Start accepts. Automaton has 7057 states and 24599 transitions. Word has length 39 [2021-07-09 18:55:51,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:51,929 INFO L482 AbstractCegarLoop]: Abstraction has 7057 states and 24599 transitions. [2021-07-09 18:55:51,929 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:51,929 INFO L276 IsEmpty]: Start isEmpty. Operand 7057 states and 24599 transitions. [2021-07-09 18:55:51,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:51,939 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:51,939 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:51,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-07-09 18:55:51,939 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:51,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:51,940 INFO L82 PathProgramCache]: Analyzing trace with hash 763284892, now seen corresponding path program 234 times [2021-07-09 18:55:51,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:51,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744919830] [2021-07-09 18:55:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:52,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:52,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744919830] [2021-07-09 18:55:52,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744919830] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:52,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:52,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:55:52,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110913920] [2021-07-09 18:55:52,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:55:52,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:52,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:55:52,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:55:52,100 INFO L87 Difference]: Start difference. First operand 7057 states and 24599 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:53,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:53,796 INFO L93 Difference]: Finished difference Result 10680 states and 36737 transitions. [2021-07-09 18:55:53,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 18:55:53,796 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:53,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:53,817 INFO L225 Difference]: With dead ends: 10680 [2021-07-09 18:55:53,817 INFO L226 Difference]: Without dead ends: 10604 [2021-07-09 18:55:53,817 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 840.1ms TimeCoverageRelationStatistics Valid=270, Invalid=2700, Unknown=0, NotChecked=0, Total=2970 [2021-07-09 18:55:53,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10604 states. [2021-07-09 18:55:53,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10604 to 7069. [2021-07-09 18:55:53,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7069 states, 7068 states have (on average 3.4837294850028298) internal successors, (24623), 7068 states have internal predecessors, (24623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:53,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7069 states to 7069 states and 24623 transitions. [2021-07-09 18:55:53,949 INFO L78 Accepts]: Start accepts. Automaton has 7069 states and 24623 transitions. Word has length 39 [2021-07-09 18:55:53,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:53,949 INFO L482 AbstractCegarLoop]: Abstraction has 7069 states and 24623 transitions. [2021-07-09 18:55:53,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:53,949 INFO L276 IsEmpty]: Start isEmpty. Operand 7069 states and 24623 transitions. [2021-07-09 18:55:53,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:53,960 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:53,960 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:53,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-07-09 18:55:53,960 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:53,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:53,960 INFO L82 PathProgramCache]: Analyzing trace with hash -254768720, now seen corresponding path program 235 times [2021-07-09 18:55:53,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:53,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329268669] [2021-07-09 18:55:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:54,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:54,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:54,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329268669] [2021-07-09 18:55:54,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329268669] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:54,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:54,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:54,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538891879] [2021-07-09 18:55:54,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:54,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:54,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:54,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:54,140 INFO L87 Difference]: Start difference. First operand 7069 states and 24623 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:55,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:55,987 INFO L93 Difference]: Finished difference Result 10662 states and 36683 transitions. [2021-07-09 18:55:55,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 18:55:55,987 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:55,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:56,009 INFO L225 Difference]: With dead ends: 10662 [2021-07-09 18:55:56,009 INFO L226 Difference]: Without dead ends: 10592 [2021-07-09 18:55:56,009 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 974.7ms TimeCoverageRelationStatistics Valid=295, Invalid=3127, Unknown=0, NotChecked=0, Total=3422 [2021-07-09 18:55:56,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10592 states. [2021-07-09 18:55:56,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10592 to 7057. [2021-07-09 18:55:56,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7057 states, 7056 states have (on average 3.485685941043084) internal successors, (24595), 7056 states have internal predecessors, (24595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7057 states to 7057 states and 24595 transitions. [2021-07-09 18:55:56,142 INFO L78 Accepts]: Start accepts. Automaton has 7057 states and 24595 transitions. Word has length 39 [2021-07-09 18:55:56,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:56,142 INFO L482 AbstractCegarLoop]: Abstraction has 7057 states and 24595 transitions. [2021-07-09 18:55:56,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:56,142 INFO L276 IsEmpty]: Start isEmpty. Operand 7057 states and 24595 transitions. [2021-07-09 18:55:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:56,152 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:56,152 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:56,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-07-09 18:55:56,153 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:56,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:56,153 INFO L82 PathProgramCache]: Analyzing trace with hash 591414960, now seen corresponding path program 236 times [2021-07-09 18:55:56,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:56,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166648165] [2021-07-09 18:55:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:56,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:56,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:56,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166648165] [2021-07-09 18:55:56,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166648165] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:56,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:56,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:56,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281064259] [2021-07-09 18:55:56,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:56,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:56,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:56,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:56,324 INFO L87 Difference]: Start difference. First operand 7057 states and 24595 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:58,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:55:58,551 INFO L93 Difference]: Finished difference Result 10427 states and 35961 transitions. [2021-07-09 18:55:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-07-09 18:55:58,551 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:55:58,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:55:58,572 INFO L225 Difference]: With dead ends: 10427 [2021-07-09 18:55:58,572 INFO L226 Difference]: Without dead ends: 10321 [2021-07-09 18:55:58,573 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1652 ImplicationChecksByTransitivity, 1328.1ms TimeCoverageRelationStatistics Valid=452, Invalid=5248, Unknown=0, NotChecked=0, Total=5700 [2021-07-09 18:55:58,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10321 states. [2021-07-09 18:55:58,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10321 to 7084. [2021-07-09 18:55:58,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7084 states, 7083 states have (on average 3.4859522801072993) internal successors, (24691), 7083 states have internal predecessors, (24691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:58,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7084 states to 7084 states and 24691 transitions. [2021-07-09 18:55:58,705 INFO L78 Accepts]: Start accepts. Automaton has 7084 states and 24691 transitions. Word has length 39 [2021-07-09 18:55:58,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:55:58,705 INFO L482 AbstractCegarLoop]: Abstraction has 7084 states and 24691 transitions. [2021-07-09 18:55:58,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:55:58,705 INFO L276 IsEmpty]: Start isEmpty. Operand 7084 states and 24691 transitions. [2021-07-09 18:55:58,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:55:58,715 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:55:58,715 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:55:58,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-07-09 18:55:58,715 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:55:58,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:55:58,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1189183342, now seen corresponding path program 237 times [2021-07-09 18:55:58,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:55:58,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662546843] [2021-07-09 18:55:58,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:55:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:55:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:55:58,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:55:58,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662546843] [2021-07-09 18:55:58,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662546843] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:55:58,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:55:58,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:55:58,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860767471] [2021-07-09 18:55:58,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:55:58,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:55:58,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:55:58,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:55:58,887 INFO L87 Difference]: Start difference. First operand 7084 states and 24691 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:01,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:01,474 INFO L93 Difference]: Finished difference Result 11618 states and 40022 transitions. [2021-07-09 18:56:01,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-07-09 18:56:01,474 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:01,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:01,498 INFO L225 Difference]: With dead ends: 11618 [2021-07-09 18:56:01,498 INFO L226 Difference]: Without dead ends: 11566 [2021-07-09 18:56:01,499 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2073 ImplicationChecksByTransitivity, 1520.4ms TimeCoverageRelationStatistics Valid=509, Invalid=6297, Unknown=0, NotChecked=0, Total=6806 [2021-07-09 18:56:01,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11566 states. [2021-07-09 18:56:01,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11566 to 7018. [2021-07-09 18:56:01,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7018 states, 7017 states have (on average 3.4855351289724954) internal successors, (24458), 7017 states have internal predecessors, (24458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:01,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7018 states to 7018 states and 24458 transitions. [2021-07-09 18:56:01,663 INFO L78 Accepts]: Start accepts. Automaton has 7018 states and 24458 transitions. Word has length 39 [2021-07-09 18:56:01,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:01,663 INFO L482 AbstractCegarLoop]: Abstraction has 7018 states and 24458 transitions. [2021-07-09 18:56:01,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:01,664 INFO L276 IsEmpty]: Start isEmpty. Operand 7018 states and 24458 transitions. [2021-07-09 18:56:01,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:01,674 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:01,674 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:01,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-07-09 18:56:01,674 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:01,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:01,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1509898530, now seen corresponding path program 238 times [2021-07-09 18:56:01,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:01,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363847741] [2021-07-09 18:56:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:01,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:01,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363847741] [2021-07-09 18:56:01,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363847741] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:01,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:01,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:01,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176920925] [2021-07-09 18:56:01,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:01,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:01,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:01,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:01,850 INFO L87 Difference]: Start difference. First operand 7018 states and 24458 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:03,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:03,258 INFO L93 Difference]: Finished difference Result 9466 states and 32661 transitions. [2021-07-09 18:56:03,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-09 18:56:03,258 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:03,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:03,278 INFO L225 Difference]: With dead ends: 9466 [2021-07-09 18:56:03,278 INFO L226 Difference]: Without dead ends: 9411 [2021-07-09 18:56:03,278 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 737.3ms TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2021-07-09 18:56:03,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9411 states. [2021-07-09 18:56:03,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9411 to 7026. [2021-07-09 18:56:03,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7026 states, 7025 states have (on average 3.484982206405694) internal successors, (24482), 7025 states have internal predecessors, (24482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:03,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7026 states to 7026 states and 24482 transitions. [2021-07-09 18:56:03,431 INFO L78 Accepts]: Start accepts. Automaton has 7026 states and 24482 transitions. Word has length 39 [2021-07-09 18:56:03,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:03,431 INFO L482 AbstractCegarLoop]: Abstraction has 7026 states and 24482 transitions. [2021-07-09 18:56:03,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand 7026 states and 24482 transitions. [2021-07-09 18:56:03,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:03,441 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:03,441 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:03,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-07-09 18:56:03,441 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:03,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:03,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1612416544, now seen corresponding path program 239 times [2021-07-09 18:56:03,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:03,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192603354] [2021-07-09 18:56:03,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:03,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:03,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192603354] [2021-07-09 18:56:03,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192603354] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:03,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:03,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:03,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145552520] [2021-07-09 18:56:03,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:03,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:03,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:03,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:03,622 INFO L87 Difference]: Start difference. First operand 7026 states and 24482 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:05,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:05,498 INFO L93 Difference]: Finished difference Result 10690 states and 36761 transitions. [2021-07-09 18:56:05,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-07-09 18:56:05,498 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:05,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:05,519 INFO L225 Difference]: With dead ends: 10690 [2021-07-09 18:56:05,519 INFO L226 Difference]: Without dead ends: 10630 [2021-07-09 18:56:05,519 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1030.7ms TimeCoverageRelationStatistics Valid=336, Invalid=3446, Unknown=0, NotChecked=0, Total=3782 [2021-07-09 18:56:05,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10630 states. [2021-07-09 18:56:05,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10630 to 7024. [2021-07-09 18:56:05,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7024 states, 7023 states have (on average 3.48526270824434) internal successors, (24477), 7023 states have internal predecessors, (24477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:05,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7024 states to 7024 states and 24477 transitions. [2021-07-09 18:56:05,646 INFO L78 Accepts]: Start accepts. Automaton has 7024 states and 24477 transitions. Word has length 39 [2021-07-09 18:56:05,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:05,646 INFO L482 AbstractCegarLoop]: Abstraction has 7024 states and 24477 transitions. [2021-07-09 18:56:05,646 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:05,646 INFO L276 IsEmpty]: Start isEmpty. Operand 7024 states and 24477 transitions. [2021-07-09 18:56:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:05,656 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:05,656 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:05,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-07-09 18:56:05,656 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:05,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:05,656 INFO L82 PathProgramCache]: Analyzing trace with hash 805147150, now seen corresponding path program 240 times [2021-07-09 18:56:05,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:05,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024318199] [2021-07-09 18:56:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:05,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:05,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024318199] [2021-07-09 18:56:05,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024318199] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:05,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:05,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:05,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465844139] [2021-07-09 18:56:05,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:05,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:05,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:05,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:05,826 INFO L87 Difference]: Start difference. First operand 7024 states and 24477 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:07,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:07,166 INFO L93 Difference]: Finished difference Result 9387 states and 32487 transitions. [2021-07-09 18:56:07,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-07-09 18:56:07,166 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:07,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:07,186 INFO L225 Difference]: With dead ends: 9387 [2021-07-09 18:56:07,186 INFO L226 Difference]: Without dead ends: 9296 [2021-07-09 18:56:07,186 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 678.8ms TimeCoverageRelationStatistics Valid=219, Invalid=2133, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 18:56:07,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9296 states. [2021-07-09 18:56:07,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9296 to 7024. [2021-07-09 18:56:07,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7024 states, 7023 states have (on average 3.484408372490389) internal successors, (24471), 7023 states have internal predecessors, (24471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:07,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7024 states to 7024 states and 24471 transitions. [2021-07-09 18:56:07,330 INFO L78 Accepts]: Start accepts. Automaton has 7024 states and 24471 transitions. Word has length 39 [2021-07-09 18:56:07,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:07,330 INFO L482 AbstractCegarLoop]: Abstraction has 7024 states and 24471 transitions. [2021-07-09 18:56:07,331 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand 7024 states and 24471 transitions. [2021-07-09 18:56:07,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:07,341 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:07,341 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:07,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-07-09 18:56:07,341 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:07,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:07,341 INFO L82 PathProgramCache]: Analyzing trace with hash -697335056, now seen corresponding path program 241 times [2021-07-09 18:56:07,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:07,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15694991] [2021-07-09 18:56:07,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:07,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:07,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:07,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15694991] [2021-07-09 18:56:07,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15694991] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:07,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:07,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:07,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769428143] [2021-07-09 18:56:07,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:07,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:07,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:07,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:07,512 INFO L87 Difference]: Start difference. First operand 7024 states and 24471 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:09,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:09,490 INFO L93 Difference]: Finished difference Result 10780 states and 37126 transitions. [2021-07-09 18:56:09,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-07-09 18:56:09,491 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:09,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:09,511 INFO L225 Difference]: With dead ends: 10780 [2021-07-09 18:56:09,512 INFO L226 Difference]: Without dead ends: 10680 [2021-07-09 18:56:09,512 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 1042.3ms TimeCoverageRelationStatistics Valid=345, Invalid=3561, Unknown=0, NotChecked=0, Total=3906 [2021-07-09 18:56:09,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10680 states. [2021-07-09 18:56:09,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10680 to 7036. [2021-07-09 18:56:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7036 states, 7035 states have (on average 3.483866382373845) internal successors, (24509), 7035 states have internal predecessors, (24509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:09,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7036 states to 7036 states and 24509 transitions. [2021-07-09 18:56:09,640 INFO L78 Accepts]: Start accepts. Automaton has 7036 states and 24509 transitions. Word has length 39 [2021-07-09 18:56:09,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:09,640 INFO L482 AbstractCegarLoop]: Abstraction has 7036 states and 24509 transitions. [2021-07-09 18:56:09,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:09,640 INFO L276 IsEmpty]: Start isEmpty. Operand 7036 states and 24509 transitions. [2021-07-09 18:56:09,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:09,650 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:09,650 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:09,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-07-09 18:56:09,650 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:09,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:09,651 INFO L82 PathProgramCache]: Analyzing trace with hash -933960052, now seen corresponding path program 242 times [2021-07-09 18:56:09,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:09,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476951232] [2021-07-09 18:56:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:09,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:09,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476951232] [2021-07-09 18:56:09,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476951232] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:09,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:09,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:56:09,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462702044] [2021-07-09 18:56:09,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:56:09,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:09,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:56:09,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:56:09,811 INFO L87 Difference]: Start difference. First operand 7036 states and 24509 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:11,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:11,406 INFO L93 Difference]: Finished difference Result 10500 states and 36228 transitions. [2021-07-09 18:56:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 18:56:11,406 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:11,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:11,427 INFO L225 Difference]: With dead ends: 10500 [2021-07-09 18:56:11,427 INFO L226 Difference]: Without dead ends: 10424 [2021-07-09 18:56:11,427 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 780.5ms TimeCoverageRelationStatistics Valid=246, Invalid=2406, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 18:56:11,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10424 states. [2021-07-09 18:56:11,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10424 to 7068. [2021-07-09 18:56:11,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7068 states, 7067 states have (on average 3.4805433705957265) internal successors, (24597), 7067 states have internal predecessors, (24597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:11,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 24597 transitions. [2021-07-09 18:56:11,556 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 24597 transitions. Word has length 39 [2021-07-09 18:56:11,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:11,557 INFO L482 AbstractCegarLoop]: Abstraction has 7068 states and 24597 transitions. [2021-07-09 18:56:11,557 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:11,557 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 24597 transitions. [2021-07-09 18:56:11,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:11,567 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:11,567 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:11,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-07-09 18:56:11,567 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:11,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:11,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1952013664, now seen corresponding path program 243 times [2021-07-09 18:56:11,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:11,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903256484] [2021-07-09 18:56:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:11,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:11,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903256484] [2021-07-09 18:56:11,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903256484] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:11,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:11,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:11,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204333610] [2021-07-09 18:56:11,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:11,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:11,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:11,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:11,738 INFO L87 Difference]: Start difference. First operand 7068 states and 24597 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:13,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:13,457 INFO L93 Difference]: Finished difference Result 10482 states and 36174 transitions. [2021-07-09 18:56:13,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-09 18:56:13,458 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:13,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:13,479 INFO L225 Difference]: With dead ends: 10482 [2021-07-09 18:56:13,479 INFO L226 Difference]: Without dead ends: 10416 [2021-07-09 18:56:13,479 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 862.7ms TimeCoverageRelationStatistics Valid=270, Invalid=2810, Unknown=0, NotChecked=0, Total=3080 [2021-07-09 18:56:13,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10416 states. [2021-07-09 18:56:13,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10416 to 7060. [2021-07-09 18:56:13,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7060 states, 7059 states have (on average 3.48108797280068) internal successors, (24573), 7059 states have internal predecessors, (24573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:13,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7060 states to 7060 states and 24573 transitions. [2021-07-09 18:56:13,611 INFO L78 Accepts]: Start accepts. Automaton has 7060 states and 24573 transitions. Word has length 39 [2021-07-09 18:56:13,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:13,611 INFO L482 AbstractCegarLoop]: Abstraction has 7060 states and 24573 transitions. [2021-07-09 18:56:13,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:13,611 INFO L276 IsEmpty]: Start isEmpty. Operand 7060 states and 24573 transitions. [2021-07-09 18:56:13,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:13,621 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:13,621 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:13,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-07-09 18:56:13,621 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:13,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:13,621 INFO L82 PathProgramCache]: Analyzing trace with hash 2060687978, now seen corresponding path program 244 times [2021-07-09 18:56:13,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:13,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624244214] [2021-07-09 18:56:13,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:13,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:13,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624244214] [2021-07-09 18:56:13,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624244214] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:13,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:13,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:13,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350362651] [2021-07-09 18:56:13,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:13,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:13,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:13,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:13,791 INFO L87 Difference]: Start difference. First operand 7060 states and 24573 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:15,623 INFO L93 Difference]: Finished difference Result 10652 states and 36718 transitions. [2021-07-09 18:56:15,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-09 18:56:15,624 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:15,644 INFO L225 Difference]: With dead ends: 10652 [2021-07-09 18:56:15,645 INFO L226 Difference]: Without dead ends: 10490 [2021-07-09 18:56:15,645 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 937.4ms TimeCoverageRelationStatistics Valid=295, Invalid=3011, Unknown=0, NotChecked=0, Total=3306 [2021-07-09 18:56:15,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10490 states. [2021-07-09 18:56:15,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10490 to 6976. [2021-07-09 18:56:15,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6976 states, 6975 states have (on average 3.4874551971326166) internal successors, (24325), 6975 states have internal predecessors, (24325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6976 states to 6976 states and 24325 transitions. [2021-07-09 18:56:15,776 INFO L78 Accepts]: Start accepts. Automaton has 6976 states and 24325 transitions. Word has length 39 [2021-07-09 18:56:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:15,776 INFO L482 AbstractCegarLoop]: Abstraction has 6976 states and 24325 transitions. [2021-07-09 18:56:15,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:15,776 INFO L276 IsEmpty]: Start isEmpty. Operand 6976 states and 24325 transitions. [2021-07-09 18:56:15,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:15,786 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:15,786 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:15,786 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-07-09 18:56:15,786 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:15,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:15,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1186761512, now seen corresponding path program 245 times [2021-07-09 18:56:15,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:15,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137521612] [2021-07-09 18:56:15,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:15,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:15,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:15,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137521612] [2021-07-09 18:56:15,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137521612] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:15,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:15,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:15,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911773515] [2021-07-09 18:56:15,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:15,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:15,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:15,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:15,958 INFO L87 Difference]: Start difference. First operand 6976 states and 24325 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:18,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:18,381 INFO L93 Difference]: Finished difference Result 10481 states and 35926 transitions. [2021-07-09 18:56:18,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-07-09 18:56:18,381 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:18,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:18,403 INFO L225 Difference]: With dead ends: 10481 [2021-07-09 18:56:18,403 INFO L226 Difference]: Without dead ends: 10417 [2021-07-09 18:56:18,404 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1881 ImplicationChecksByTransitivity, 1446.0ms TimeCoverageRelationStatistics Valid=493, Invalid=5827, Unknown=0, NotChecked=0, Total=6320 [2021-07-09 18:56:18,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10417 states. [2021-07-09 18:56:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10417 to 6979. [2021-07-09 18:56:18,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 6978 states have (on average 3.487675551734021) internal successors, (24337), 6978 states have internal predecessors, (24337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:18,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 24337 transitions. [2021-07-09 18:56:18,537 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 24337 transitions. Word has length 39 [2021-07-09 18:56:18,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:18,538 INFO L482 AbstractCegarLoop]: Abstraction has 6979 states and 24337 transitions. [2021-07-09 18:56:18,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:18,538 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 24337 transitions. [2021-07-09 18:56:18,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:18,579 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:18,579 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:18,579 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-07-09 18:56:18,579 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:18,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:18,579 INFO L82 PathProgramCache]: Analyzing trace with hash -268277942, now seen corresponding path program 246 times [2021-07-09 18:56:18,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:18,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871747563] [2021-07-09 18:56:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:18,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:18,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871747563] [2021-07-09 18:56:18,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871747563] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:18,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:18,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:18,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121280700] [2021-07-09 18:56:18,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:18,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:18,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:18,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:18,749 INFO L87 Difference]: Start difference. First operand 6979 states and 24337 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:20,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:20,247 INFO L93 Difference]: Finished difference Result 9530 states and 32717 transitions. [2021-07-09 18:56:20,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-09 18:56:20,248 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:20,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:20,267 INFO L225 Difference]: With dead ends: 9530 [2021-07-09 18:56:20,267 INFO L226 Difference]: Without dead ends: 9487 [2021-07-09 18:56:20,268 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 789.3ms TimeCoverageRelationStatistics Valid=264, Invalid=2598, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:56:20,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9487 states. [2021-07-09 18:56:20,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9487 to 6991. [2021-07-09 18:56:20,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6991 states, 6990 states have (on average 3.486123032904149) internal successors, (24368), 6990 states have internal predecessors, (24368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6991 states to 6991 states and 24368 transitions. [2021-07-09 18:56:20,392 INFO L78 Accepts]: Start accepts. Automaton has 6991 states and 24368 transitions. Word has length 39 [2021-07-09 18:56:20,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:20,392 INFO L482 AbstractCegarLoop]: Abstraction has 6991 states and 24368 transitions. [2021-07-09 18:56:20,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 6991 states and 24368 transitions. [2021-07-09 18:56:20,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:20,433 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:20,433 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:20,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-07-09 18:56:20,433 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:20,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:20,434 INFO L82 PathProgramCache]: Analyzing trace with hash -248129208, now seen corresponding path program 247 times [2021-07-09 18:56:20,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:20,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741037733] [2021-07-09 18:56:20,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:20,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:20,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741037733] [2021-07-09 18:56:20,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741037733] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:20,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:20,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:20,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567697811] [2021-07-09 18:56:20,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:20,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:20,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:20,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:20,606 INFO L87 Difference]: Start difference. First operand 6991 states and 24368 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:22,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:22,274 INFO L93 Difference]: Finished difference Result 9712 states and 33226 transitions. [2021-07-09 18:56:22,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 18:56:22,275 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:22,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:22,295 INFO L225 Difference]: With dead ends: 9712 [2021-07-09 18:56:22,295 INFO L226 Difference]: Without dead ends: 9669 [2021-07-09 18:56:22,295 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 916.7ms TimeCoverageRelationStatistics Valid=302, Invalid=3120, Unknown=0, NotChecked=0, Total=3422 [2021-07-09 18:56:22,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9669 states. [2021-07-09 18:56:22,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9669 to 6987. [2021-07-09 18:56:22,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6987 states, 6986 states have (on average 3.4866876610363584) internal successors, (24358), 6986 states have internal predecessors, (24358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:22,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6987 states to 6987 states and 24358 transitions. [2021-07-09 18:56:22,446 INFO L78 Accepts]: Start accepts. Automaton has 6987 states and 24358 transitions. Word has length 39 [2021-07-09 18:56:22,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:22,447 INFO L482 AbstractCegarLoop]: Abstraction has 6987 states and 24358 transitions. [2021-07-09 18:56:22,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:22,447 INFO L276 IsEmpty]: Start isEmpty. Operand 6987 states and 24358 transitions. [2021-07-09 18:56:22,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:22,457 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:22,457 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:22,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-07-09 18:56:22,457 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:22,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:22,457 INFO L82 PathProgramCache]: Analyzing trace with hash 904374280, now seen corresponding path program 248 times [2021-07-09 18:56:22,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:22,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032599865] [2021-07-09 18:56:22,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:22,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:22,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:22,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032599865] [2021-07-09 18:56:22,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032599865] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:22,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:22,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:22,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084701626] [2021-07-09 18:56:22,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:22,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:22,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:22,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:22,629 INFO L87 Difference]: Start difference. First operand 6987 states and 24358 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:24,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:24,827 INFO L93 Difference]: Finished difference Result 10752 states and 36838 transitions. [2021-07-09 18:56:24,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-09 18:56:24,828 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:24,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:24,848 INFO L225 Difference]: With dead ends: 10752 [2021-07-09 18:56:24,848 INFO L226 Difference]: Without dead ends: 10692 [2021-07-09 18:56:24,849 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1202.8ms TimeCoverageRelationStatistics Valid=398, Invalid=4158, Unknown=0, NotChecked=0, Total=4556 [2021-07-09 18:56:24,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10692 states. [2021-07-09 18:56:24,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10692 to 6987. [2021-07-09 18:56:24,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6987 states, 6986 states have (on average 3.4875465216146577) internal successors, (24364), 6986 states have internal predecessors, (24364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6987 states to 6987 states and 24364 transitions. [2021-07-09 18:56:24,978 INFO L78 Accepts]: Start accepts. Automaton has 6987 states and 24364 transitions. Word has length 39 [2021-07-09 18:56:24,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:24,978 INFO L482 AbstractCegarLoop]: Abstraction has 6987 states and 24364 transitions. [2021-07-09 18:56:24,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:24,978 INFO L276 IsEmpty]: Start isEmpty. Operand 6987 states and 24364 transitions. [2021-07-09 18:56:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:24,988 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:24,988 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:24,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-07-09 18:56:24,988 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:24,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:24,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1175192262, now seen corresponding path program 249 times [2021-07-09 18:56:24,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:24,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763083143] [2021-07-09 18:56:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:25,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:25,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763083143] [2021-07-09 18:56:25,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763083143] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:25,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:25,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:56:25,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143690146] [2021-07-09 18:56:25,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:56:25,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:25,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:56:25,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:56:25,147 INFO L87 Difference]: Start difference. First operand 6987 states and 24364 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:27,027 INFO L93 Difference]: Finished difference Result 10732 states and 36775 transitions. [2021-07-09 18:56:27,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-07-09 18:56:27,027 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:27,048 INFO L225 Difference]: With dead ends: 10732 [2021-07-09 18:56:27,048 INFO L226 Difference]: Without dead ends: 10656 [2021-07-09 18:56:27,048 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 981.1ms TimeCoverageRelationStatistics Valid=322, Invalid=3218, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 18:56:27,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10656 states. [2021-07-09 18:56:27,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10656 to 6999. [2021-07-09 18:56:27,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6999 states, 6998 states have (on average 3.4849957130608744) internal successors, (24388), 6998 states have internal predecessors, (24388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:27,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6999 states to 6999 states and 24388 transitions. [2021-07-09 18:56:27,181 INFO L78 Accepts]: Start accepts. Automaton has 6999 states and 24388 transitions. Word has length 39 [2021-07-09 18:56:27,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:27,181 INFO L482 AbstractCegarLoop]: Abstraction has 6999 states and 24388 transitions. [2021-07-09 18:56:27,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:27,181 INFO L276 IsEmpty]: Start isEmpty. Operand 6999 states and 24388 transitions. [2021-07-09 18:56:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:27,191 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:27,191 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:27,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-07-09 18:56:27,191 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:27,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:27,191 INFO L82 PathProgramCache]: Analyzing trace with hash 2101721422, now seen corresponding path program 250 times [2021-07-09 18:56:27,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:27,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770426795] [2021-07-09 18:56:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:27,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:27,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770426795] [2021-07-09 18:56:27,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770426795] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:27,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:27,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:27,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628210957] [2021-07-09 18:56:27,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:27,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:27,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:27,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:27,363 INFO L87 Difference]: Start difference. First operand 6999 states and 24388 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:29,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:29,466 INFO L93 Difference]: Finished difference Result 10738 states and 36791 transitions. [2021-07-09 18:56:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-07-09 18:56:29,466 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:29,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:29,488 INFO L225 Difference]: With dead ends: 10738 [2021-07-09 18:56:29,488 INFO L226 Difference]: Without dead ends: 10668 [2021-07-09 18:56:29,489 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 1139.8ms TimeCoverageRelationStatistics Valid=373, Invalid=3917, Unknown=0, NotChecked=0, Total=4290 [2021-07-09 18:56:29,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10668 states. [2021-07-09 18:56:29,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10668 to 6987. [2021-07-09 18:56:29,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6987 states, 6986 states have (on average 3.4866876610363584) internal successors, (24358), 6986 states have internal predecessors, (24358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:29,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6987 states to 6987 states and 24358 transitions. [2021-07-09 18:56:29,624 INFO L78 Accepts]: Start accepts. Automaton has 6987 states and 24358 transitions. Word has length 39 [2021-07-09 18:56:29,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:29,624 INFO L482 AbstractCegarLoop]: Abstraction has 6987 states and 24358 transitions. [2021-07-09 18:56:29,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:29,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6987 states and 24358 transitions. [2021-07-09 18:56:29,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:29,634 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:29,634 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:29,634 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-07-09 18:56:29,634 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:29,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:29,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1716858004, now seen corresponding path program 251 times [2021-07-09 18:56:29,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:29,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814265561] [2021-07-09 18:56:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:29,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:29,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814265561] [2021-07-09 18:56:29,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814265561] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:29,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:29,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:29,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451372865] [2021-07-09 18:56:29,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:29,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:29,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:29,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:29,807 INFO L87 Difference]: Start difference. First operand 6987 states and 24358 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:32,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:32,151 INFO L93 Difference]: Finished difference Result 10391 states and 35712 transitions. [2021-07-09 18:56:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-07-09 18:56:32,152 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:32,173 INFO L225 Difference]: With dead ends: 10391 [2021-07-09 18:56:32,173 INFO L226 Difference]: Without dead ends: 10327 [2021-07-09 18:56:32,174 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1643 ImplicationChecksByTransitivity, 1348.2ms TimeCoverageRelationStatistics Valid=443, Invalid=5257, Unknown=0, NotChecked=0, Total=5700 [2021-07-09 18:56:32,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10327 states. [2021-07-09 18:56:32,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10327 to 6986. [2021-07-09 18:56:32,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6986 states, 6985 states have (on average 3.4866141732283467) internal successors, (24354), 6985 states have internal predecessors, (24354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:32,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6986 states to 6986 states and 24354 transitions. [2021-07-09 18:56:32,326 INFO L78 Accepts]: Start accepts. Automaton has 6986 states and 24354 transitions. Word has length 39 [2021-07-09 18:56:32,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:32,326 INFO L482 AbstractCegarLoop]: Abstraction has 6986 states and 24354 transitions. [2021-07-09 18:56:32,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:32,326 INFO L276 IsEmpty]: Start isEmpty. Operand 6986 states and 24354 transitions. [2021-07-09 18:56:32,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:32,336 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:32,336 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:32,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-07-09 18:56:32,336 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:32,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:32,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1040690062, now seen corresponding path program 252 times [2021-07-09 18:56:32,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:32,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860409520] [2021-07-09 18:56:32,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:32,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:32,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860409520] [2021-07-09 18:56:32,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860409520] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:32,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:32,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:32,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53380485] [2021-07-09 18:56:32,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:32,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:32,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:32,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:32,507 INFO L87 Difference]: Start difference. First operand 6986 states and 24354 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:33,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:33,949 INFO L93 Difference]: Finished difference Result 9474 states and 32586 transitions. [2021-07-09 18:56:33,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-07-09 18:56:33,949 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:33,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:33,969 INFO L225 Difference]: With dead ends: 9474 [2021-07-09 18:56:33,969 INFO L226 Difference]: Without dead ends: 9431 [2021-07-09 18:56:33,969 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 725.9ms TimeCoverageRelationStatistics Valid=228, Invalid=2322, Unknown=0, NotChecked=0, Total=2550 [2021-07-09 18:56:33,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9431 states. [2021-07-09 18:56:34,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9431 to 7001. [2021-07-09 18:56:34,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 7000 states have (on average 3.4844285714285714) internal successors, (24391), 7000 states have internal predecessors, (24391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:34,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 24391 transitions. [2021-07-09 18:56:34,123 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 24391 transitions. Word has length 39 [2021-07-09 18:56:34,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:34,124 INFO L482 AbstractCegarLoop]: Abstraction has 7001 states and 24391 transitions. [2021-07-09 18:56:34,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:34,124 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 24391 transitions. [2021-07-09 18:56:34,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:34,133 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:34,134 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:34,134 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-07-09 18:56:34,134 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:34,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:34,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1504170098, now seen corresponding path program 253 times [2021-07-09 18:56:34,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:34,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638616108] [2021-07-09 18:56:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:34,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:34,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638616108] [2021-07-09 18:56:34,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638616108] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:34,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:34,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:34,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077806978] [2021-07-09 18:56:34,304 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:34,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:34,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:34,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:34,304 INFO L87 Difference]: Start difference. First operand 7001 states and 24391 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:35,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:35,784 INFO L93 Difference]: Finished difference Result 9425 states and 32468 transitions. [2021-07-09 18:56:35,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 18:56:35,784 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:35,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:35,803 INFO L225 Difference]: With dead ends: 9425 [2021-07-09 18:56:35,803 INFO L226 Difference]: Without dead ends: 9374 [2021-07-09 18:56:35,804 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 756.4ms TimeCoverageRelationStatistics Valid=245, Invalid=2511, Unknown=0, NotChecked=0, Total=2756 [2021-07-09 18:56:35,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9374 states. [2021-07-09 18:56:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9374 to 6995. [2021-07-09 18:56:35,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6995 states, 6994 states have (on average 3.4851301115241635) internal successors, (24375), 6994 states have internal predecessors, (24375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6995 states to 6995 states and 24375 transitions. [2021-07-09 18:56:35,965 INFO L78 Accepts]: Start accepts. Automaton has 6995 states and 24375 transitions. Word has length 39 [2021-07-09 18:56:35,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:35,965 INFO L482 AbstractCegarLoop]: Abstraction has 6995 states and 24375 transitions. [2021-07-09 18:56:35,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:35,965 INFO L276 IsEmpty]: Start isEmpty. Operand 6995 states and 24375 transitions. [2021-07-09 18:56:35,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:35,974 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:35,974 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:35,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-07-09 18:56:35,975 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:35,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:35,975 INFO L82 PathProgramCache]: Analyzing trace with hash -886951696, now seen corresponding path program 254 times [2021-07-09 18:56:35,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:35,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122253007] [2021-07-09 18:56:35,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:36,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:36,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122253007] [2021-07-09 18:56:36,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122253007] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:36,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:36,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:36,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462154884] [2021-07-09 18:56:36,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:36,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:36,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:36,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:36,145 INFO L87 Difference]: Start difference. First operand 6995 states and 24375 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:38,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:38,302 INFO L93 Difference]: Finished difference Result 10767 states and 36879 transitions. [2021-07-09 18:56:38,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-09 18:56:38,302 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:38,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:38,322 INFO L225 Difference]: With dead ends: 10767 [2021-07-09 18:56:38,322 INFO L226 Difference]: Without dead ends: 10721 [2021-07-09 18:56:38,322 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1215 ImplicationChecksByTransitivity, 1141.9ms TimeCoverageRelationStatistics Valid=376, Invalid=4180, Unknown=0, NotChecked=0, Total=4556 [2021-07-09 18:56:38,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10721 states. [2021-07-09 18:56:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10721 to 7002. [2021-07-09 18:56:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7002 states, 7001 states have (on average 3.483788030281388) internal successors, (24390), 7001 states have internal predecessors, (24390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:38,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7002 states to 7002 states and 24390 transitions. [2021-07-09 18:56:38,452 INFO L78 Accepts]: Start accepts. Automaton has 7002 states and 24390 transitions. Word has length 39 [2021-07-09 18:56:38,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:38,452 INFO L482 AbstractCegarLoop]: Abstraction has 7002 states and 24390 transitions. [2021-07-09 18:56:38,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:38,452 INFO L276 IsEmpty]: Start isEmpty. Operand 7002 states and 24390 transitions. [2021-07-09 18:56:38,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:38,462 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:38,462 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:38,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-07-09 18:56:38,462 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:38,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:38,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1972948110, now seen corresponding path program 255 times [2021-07-09 18:56:38,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:38,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624263233] [2021-07-09 18:56:38,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:38,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:38,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624263233] [2021-07-09 18:56:38,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624263233] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:38,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:38,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:38,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891816125] [2021-07-09 18:56:38,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:38,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:38,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:38,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:38,631 INFO L87 Difference]: Start difference. First operand 7002 states and 24390 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:40,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:40,134 INFO L93 Difference]: Finished difference Result 9433 states and 32482 transitions. [2021-07-09 18:56:40,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 18:56:40,134 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:40,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:40,152 INFO L225 Difference]: With dead ends: 9433 [2021-07-09 18:56:40,152 INFO L226 Difference]: Without dead ends: 9378 [2021-07-09 18:56:40,152 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 754.1ms TimeCoverageRelationStatistics Valid=247, Invalid=2509, Unknown=0, NotChecked=0, Total=2756 [2021-07-09 18:56:40,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9378 states. [2021-07-09 18:56:40,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9378 to 6999. [2021-07-09 18:56:40,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6999 states, 6998 states have (on average 3.4841383252357816) internal successors, (24382), 6998 states have internal predecessors, (24382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:40,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6999 states to 6999 states and 24382 transitions. [2021-07-09 18:56:40,269 INFO L78 Accepts]: Start accepts. Automaton has 6999 states and 24382 transitions. Word has length 39 [2021-07-09 18:56:40,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:40,269 INFO L482 AbstractCegarLoop]: Abstraction has 6999 states and 24382 transitions. [2021-07-09 18:56:40,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:40,269 INFO L276 IsEmpty]: Start isEmpty. Operand 6999 states and 24382 transitions. [2021-07-09 18:56:40,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:40,280 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:40,280 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:40,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-07-09 18:56:40,280 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:40,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:40,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1392331400, now seen corresponding path program 256 times [2021-07-09 18:56:40,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:40,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011201917] [2021-07-09 18:56:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:40,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:40,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011201917] [2021-07-09 18:56:40,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011201917] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:40,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:40,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-07-09 18:56:40,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070011379] [2021-07-09 18:56:40,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 18:56:40,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:40,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 18:56:40,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-07-09 18:56:40,438 INFO L87 Difference]: Start difference. First operand 6999 states and 24382 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:42,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:42,299 INFO L93 Difference]: Finished difference Result 10639 states and 36538 transitions. [2021-07-09 18:56:42,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-07-09 18:56:42,299 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:42,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:42,319 INFO L225 Difference]: With dead ends: 10639 [2021-07-09 18:56:42,319 INFO L226 Difference]: Without dead ends: 10563 [2021-07-09 18:56:42,319 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 991.7ms TimeCoverageRelationStatistics Valid=311, Invalid=3111, Unknown=0, NotChecked=0, Total=3422 [2021-07-09 18:56:42,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10563 states. [2021-07-09 18:56:42,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10563 to 7013. [2021-07-09 18:56:42,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7013 states, 7012 states have (on average 3.481460353679407) internal successors, (24412), 7012 states have internal predecessors, (24412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:42,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7013 states to 7013 states and 24412 transitions. [2021-07-09 18:56:42,454 INFO L78 Accepts]: Start accepts. Automaton has 7013 states and 24412 transitions. Word has length 39 [2021-07-09 18:56:42,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:42,454 INFO L482 AbstractCegarLoop]: Abstraction has 7013 states and 24412 transitions. [2021-07-09 18:56:42,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:42,454 INFO L276 IsEmpty]: Start isEmpty. Operand 7013 states and 24412 transitions. [2021-07-09 18:56:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:42,464 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:42,464 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:42,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-07-09 18:56:42,464 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:42,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:42,465 INFO L82 PathProgramCache]: Analyzing trace with hash -155590934, now seen corresponding path program 257 times [2021-07-09 18:56:42,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:42,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625762538] [2021-07-09 18:56:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:42,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:42,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625762538] [2021-07-09 18:56:42,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625762538] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:42,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:42,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:42,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559063632] [2021-07-09 18:56:42,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:42,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:42,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:42,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:42,644 INFO L87 Difference]: Start difference. First operand 7013 states and 24412 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:44,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:44,684 INFO L93 Difference]: Finished difference Result 10720 states and 36735 transitions. [2021-07-09 18:56:44,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-07-09 18:56:44,685 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:44,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:44,705 INFO L225 Difference]: With dead ends: 10720 [2021-07-09 18:56:44,706 INFO L226 Difference]: Without dead ends: 10674 [2021-07-09 18:56:44,706 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1071 ImplicationChecksByTransitivity, 1071.6ms TimeCoverageRelationStatistics Valid=353, Invalid=3807, Unknown=0, NotChecked=0, Total=4160 [2021-07-09 18:56:44,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10674 states. [2021-07-09 18:56:44,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10674 to 7013. [2021-07-09 18:56:44,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7013 states, 7012 states have (on average 3.481460353679407) internal successors, (24412), 7012 states have internal predecessors, (24412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7013 states to 7013 states and 24412 transitions. [2021-07-09 18:56:44,839 INFO L78 Accepts]: Start accepts. Automaton has 7013 states and 24412 transitions. Word has length 39 [2021-07-09 18:56:44,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:44,839 INFO L482 AbstractCegarLoop]: Abstraction has 7013 states and 24412 transitions. [2021-07-09 18:56:44,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 7013 states and 24412 transitions. [2021-07-09 18:56:44,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:44,849 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:44,849 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:44,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-07-09 18:56:44,849 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:44,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:44,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1590658424, now seen corresponding path program 258 times [2021-07-09 18:56:44,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:44,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612778120] [2021-07-09 18:56:44,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:45,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:45,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612778120] [2021-07-09 18:56:45,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612778120] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:45,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:45,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:45,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304401762] [2021-07-09 18:56:45,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:45,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:45,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:45,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:45,019 INFO L87 Difference]: Start difference. First operand 7013 states and 24412 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:46,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:46,455 INFO L93 Difference]: Finished difference Result 9331 states and 32218 transitions. [2021-07-09 18:56:46,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-07-09 18:56:46,456 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:46,474 INFO L225 Difference]: With dead ends: 9331 [2021-07-09 18:56:46,474 INFO L226 Difference]: Without dead ends: 9259 [2021-07-09 18:56:46,475 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 725.1ms TimeCoverageRelationStatistics Valid=238, Invalid=2414, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 18:56:46,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9259 states. [2021-07-09 18:56:46,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9259 to 6993. [2021-07-09 18:56:46,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6993 states, 6992 states have (on average 3.4844107551487413) internal successors, (24363), 6992 states have internal predecessors, (24363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:46,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6993 states to 6993 states and 24363 transitions. [2021-07-09 18:56:46,597 INFO L78 Accepts]: Start accepts. Automaton has 6993 states and 24363 transitions. Word has length 39 [2021-07-09 18:56:46,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:46,597 INFO L482 AbstractCegarLoop]: Abstraction has 6993 states and 24363 transitions. [2021-07-09 18:56:46,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:46,597 INFO L276 IsEmpty]: Start isEmpty. Operand 6993 states and 24363 transitions. [2021-07-09 18:56:46,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:46,607 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:46,607 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:46,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-07-09 18:56:46,607 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:46,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:46,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2135295316, now seen corresponding path program 259 times [2021-07-09 18:56:46,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:46,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050991852] [2021-07-09 18:56:46,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:46,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:46,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:46,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050991852] [2021-07-09 18:56:46,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050991852] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:46,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:46,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:46,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325346080] [2021-07-09 18:56:46,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:46,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:46,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:46,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:46,771 INFO L87 Difference]: Start difference. First operand 6993 states and 24363 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:48,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:48,459 INFO L93 Difference]: Finished difference Result 9524 states and 32686 transitions. [2021-07-09 18:56:48,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-09 18:56:48,459 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:48,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:48,478 INFO L225 Difference]: With dead ends: 9524 [2021-07-09 18:56:48,478 INFO L226 Difference]: Without dead ends: 9473 [2021-07-09 18:56:48,479 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 950.6ms TimeCoverageRelationStatistics Valid=319, Invalid=3221, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 18:56:48,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9473 states. [2021-07-09 18:56:48,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9473 to 7006. [2021-07-09 18:56:48,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7006 states, 7005 states have (on average 3.483083511777302) internal successors, (24399), 7005 states have internal predecessors, (24399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7006 states to 7006 states and 24399 transitions. [2021-07-09 18:56:48,602 INFO L78 Accepts]: Start accepts. Automaton has 7006 states and 24399 transitions. Word has length 39 [2021-07-09 18:56:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:48,602 INFO L482 AbstractCegarLoop]: Abstraction has 7006 states and 24399 transitions. [2021-07-09 18:56:48,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 7006 states and 24399 transitions. [2021-07-09 18:56:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:48,612 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:48,612 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:48,612 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-07-09 18:56:48,612 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:48,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:48,612 INFO L82 PathProgramCache]: Analyzing trace with hash -2115146582, now seen corresponding path program 260 times [2021-07-09 18:56:48,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:48,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341333193] [2021-07-09 18:56:48,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:48,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:48,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341333193] [2021-07-09 18:56:48,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341333193] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:48,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:48,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:48,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52977153] [2021-07-09 18:56:48,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:48,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:48,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:48,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:48,783 INFO L87 Difference]: Start difference. First operand 7006 states and 24399 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:50,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:50,502 INFO L93 Difference]: Finished difference Result 9644 states and 33043 transitions. [2021-07-09 18:56:50,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-09 18:56:50,502 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:50,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:50,521 INFO L225 Difference]: With dead ends: 9644 [2021-07-09 18:56:50,521 INFO L226 Difference]: Without dead ends: 9601 [2021-07-09 18:56:50,522 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 866 ImplicationChecksByTransitivity, 952.8ms TimeCoverageRelationStatistics Valid=318, Invalid=3222, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 18:56:50,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9601 states. [2021-07-09 18:56:50,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9601 to 7006. [2021-07-09 18:56:50,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7006 states, 7005 states have (on average 3.4827980014275517) internal successors, (24397), 7005 states have internal predecessors, (24397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:50,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7006 states to 7006 states and 24397 transitions. [2021-07-09 18:56:50,652 INFO L78 Accepts]: Start accepts. Automaton has 7006 states and 24397 transitions. Word has length 39 [2021-07-09 18:56:50,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:50,652 INFO L482 AbstractCegarLoop]: Abstraction has 7006 states and 24397 transitions. [2021-07-09 18:56:50,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:50,652 INFO L276 IsEmpty]: Start isEmpty. Operand 7006 states and 24397 transitions. [2021-07-09 18:56:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:50,662 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:50,662 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:50,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-07-09 18:56:50,663 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:50,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:50,663 INFO L82 PathProgramCache]: Analyzing trace with hash -962643094, now seen corresponding path program 261 times [2021-07-09 18:56:50,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:50,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750625992] [2021-07-09 18:56:50,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:50,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:50,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750625992] [2021-07-09 18:56:50,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750625992] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:50,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:50,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:50,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972192563] [2021-07-09 18:56:50,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:50,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:50,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:50,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:50,832 INFO L87 Difference]: Start difference. First operand 7006 states and 24397 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:53,065 INFO L93 Difference]: Finished difference Result 10774 states and 36855 transitions. [2021-07-09 18:56:53,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-07-09 18:56:53,065 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:53,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:53,087 INFO L225 Difference]: With dead ends: 10774 [2021-07-09 18:56:53,087 INFO L226 Difference]: Without dead ends: 10714 [2021-07-09 18:56:53,088 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 1286.8ms TimeCoverageRelationStatistics Valid=425, Invalid=4545, Unknown=0, NotChecked=0, Total=4970 [2021-07-09 18:56:53,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10714 states. [2021-07-09 18:56:53,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10714 to 7002. [2021-07-09 18:56:53,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7002 states, 7001 states have (on average 3.483216683330953) internal successors, (24386), 7001 states have internal predecessors, (24386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:53,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7002 states to 7002 states and 24386 transitions. [2021-07-09 18:56:53,252 INFO L78 Accepts]: Start accepts. Automaton has 7002 states and 24386 transitions. Word has length 39 [2021-07-09 18:56:53,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:53,252 INFO L482 AbstractCegarLoop]: Abstraction has 7002 states and 24386 transitions. [2021-07-09 18:56:53,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:53,252 INFO L276 IsEmpty]: Start isEmpty. Operand 7002 states and 24386 transitions. [2021-07-09 18:56:53,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:53,262 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:53,262 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:53,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-07-09 18:56:53,262 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:53,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:53,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1030387974, now seen corresponding path program 262 times [2021-07-09 18:56:53,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:53,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980360904] [2021-07-09 18:56:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:53,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:53,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980360904] [2021-07-09 18:56:53,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980360904] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:53,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:53,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:53,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725776652] [2021-07-09 18:56:53,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:53,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:53,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:53,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:53,429 INFO L87 Difference]: Start difference. First operand 7002 states and 24386 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:54,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:54,993 INFO L93 Difference]: Finished difference Result 9498 states and 32606 transitions. [2021-07-09 18:56:54,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-09 18:56:54,993 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:54,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:55,012 INFO L225 Difference]: With dead ends: 9498 [2021-07-09 18:56:55,012 INFO L226 Difference]: Without dead ends: 9455 [2021-07-09 18:56:55,013 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 838.2ms TimeCoverageRelationStatistics Valid=276, Invalid=2804, Unknown=0, NotChecked=0, Total=3080 [2021-07-09 18:56:55,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9455 states. [2021-07-09 18:56:55,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9455 to 7011. [2021-07-09 18:56:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7011 states, 7010 states have (on average 3.481740370898716) internal successors, (24407), 7010 states have internal predecessors, (24407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7011 states to 7011 states and 24407 transitions. [2021-07-09 18:56:55,159 INFO L78 Accepts]: Start accepts. Automaton has 7011 states and 24407 transitions. Word has length 39 [2021-07-09 18:56:55,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:55,160 INFO L482 AbstractCegarLoop]: Abstraction has 7011 states and 24407 transitions. [2021-07-09 18:56:55,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:55,160 INFO L276 IsEmpty]: Start isEmpty. Operand 7011 states and 24407 transitions. [2021-07-09 18:56:55,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:55,169 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:55,169 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:55,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-07-09 18:56:55,170 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:55,170 INFO L82 PathProgramCache]: Analyzing trace with hash 719719162, now seen corresponding path program 263 times [2021-07-09 18:56:55,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:55,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61674581] [2021-07-09 18:56:55,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:55,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:55,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61674581] [2021-07-09 18:56:55,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61674581] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:55,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:55,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:55,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772536126] [2021-07-09 18:56:55,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:55,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:55,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:55,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:55,337 INFO L87 Difference]: Start difference. First operand 7011 states and 24407 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:56,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:56,923 INFO L93 Difference]: Finished difference Result 9514 states and 32639 transitions. [2021-07-09 18:56:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 18:56:56,923 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:56,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:56,942 INFO L225 Difference]: With dead ends: 9514 [2021-07-09 18:56:56,942 INFO L226 Difference]: Without dead ends: 9414 [2021-07-09 18:56:56,943 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 869.3ms TimeCoverageRelationStatistics Valid=292, Invalid=3014, Unknown=0, NotChecked=0, Total=3306 [2021-07-09 18:56:56,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9414 states. [2021-07-09 18:56:57,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9414 to 7013. [2021-07-09 18:56:57,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7013 states, 7012 states have (on average 3.4804620650313747) internal successors, (24405), 7012 states have internal predecessors, (24405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:57,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7013 states to 7013 states and 24405 transitions. [2021-07-09 18:56:57,090 INFO L78 Accepts]: Start accepts. Automaton has 7013 states and 24405 transitions. Word has length 39 [2021-07-09 18:56:57,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:57,090 INFO L482 AbstractCegarLoop]: Abstraction has 7013 states and 24405 transitions. [2021-07-09 18:56:57,090 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:57,090 INFO L276 IsEmpty]: Start isEmpty. Operand 7013 states and 24405 transitions. [2021-07-09 18:56:57,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:57,100 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:57,100 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:57,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-07-09 18:56:57,100 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:57,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:57,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1336937564, now seen corresponding path program 264 times [2021-07-09 18:56:57,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:57,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876958158] [2021-07-09 18:56:57,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:57,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:57,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876958158] [2021-07-09 18:56:57,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876958158] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:57,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:57,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:57,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706322571] [2021-07-09 18:56:57,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:57,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:57,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:57,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:57,268 INFO L87 Difference]: Start difference. First operand 7013 states and 24405 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:59,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:56:59,474 INFO L93 Difference]: Finished difference Result 10735 states and 36766 transitions. [2021-07-09 18:56:59,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-07-09 18:56:59,475 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:56:59,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:56:59,495 INFO L225 Difference]: With dead ends: 10735 [2021-07-09 18:56:59,495 INFO L226 Difference]: Without dead ends: 10689 [2021-07-09 18:56:59,496 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 1240.8ms TimeCoverageRelationStatistics Valid=400, Invalid=4430, Unknown=0, NotChecked=0, Total=4830 [2021-07-09 18:56:59,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10689 states. [2021-07-09 18:56:59,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10689 to 7011. [2021-07-09 18:56:59,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7011 states, 7010 states have (on average 3.481027104136947) internal successors, (24402), 7010 states have internal predecessors, (24402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:59,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7011 states to 7011 states and 24402 transitions. [2021-07-09 18:56:59,626 INFO L78 Accepts]: Start accepts. Automaton has 7011 states and 24402 transitions. Word has length 39 [2021-07-09 18:56:59,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:56:59,626 INFO L482 AbstractCegarLoop]: Abstraction has 7011 states and 24402 transitions. [2021-07-09 18:56:59,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:56:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 7011 states and 24402 transitions. [2021-07-09 18:56:59,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:56:59,636 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:56:59,636 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:56:59,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-07-09 18:56:59,637 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:56:59,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:56:59,637 INFO L82 PathProgramCache]: Analyzing trace with hash -98129926, now seen corresponding path program 265 times [2021-07-09 18:56:59,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:56:59,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393872820] [2021-07-09 18:56:59,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:56:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:56:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:56:59,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:56:59,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393872820] [2021-07-09 18:56:59,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393872820] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:56:59,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:56:59,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:56:59,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008244453] [2021-07-09 18:56:59,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:56:59,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:56:59,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:56:59,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:56:59,809 INFO L87 Difference]: Start difference. First operand 7011 states and 24402 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:01,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:01,391 INFO L93 Difference]: Finished difference Result 9435 states and 32446 transitions. [2021-07-09 18:57:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 18:57:01,392 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:01,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:01,410 INFO L225 Difference]: With dead ends: 9435 [2021-07-09 18:57:01,410 INFO L226 Difference]: Without dead ends: 9374 [2021-07-09 18:57:01,410 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 821.1ms TimeCoverageRelationStatistics Valid=268, Invalid=2702, Unknown=0, NotChecked=0, Total=2970 [2021-07-09 18:57:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9374 states. [2021-07-09 18:57:01,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9374 to 7002. [2021-07-09 18:57:01,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7002 states, 7001 states have (on average 3.4823596629052993) internal successors, (24380), 7001 states have internal predecessors, (24380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:01,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7002 states to 7002 states and 24380 transitions. [2021-07-09 18:57:01,529 INFO L78 Accepts]: Start accepts. Automaton has 7002 states and 24380 transitions. Word has length 39 [2021-07-09 18:57:01,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:01,529 INFO L482 AbstractCegarLoop]: Abstraction has 7002 states and 24380 transitions. [2021-07-09 18:57:01,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 7002 states and 24380 transitions. [2021-07-09 18:57:01,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:01,539 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:01,539 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:01,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-07-09 18:57:01,539 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:01,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:01,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1840182968, now seen corresponding path program 266 times [2021-07-09 18:57:01,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:01,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692940435] [2021-07-09 18:57:01,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:01,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:01,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692940435] [2021-07-09 18:57:01,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692940435] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:01,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:01,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:01,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370300347] [2021-07-09 18:57:01,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:01,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:01,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:01,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:01,711 INFO L87 Difference]: Start difference. First operand 7002 states and 24380 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:03,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:03,342 INFO L93 Difference]: Finished difference Result 9537 states and 32775 transitions. [2021-07-09 18:57:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-07-09 18:57:03,342 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:03,361 INFO L225 Difference]: With dead ends: 9537 [2021-07-09 18:57:03,361 INFO L226 Difference]: Without dead ends: 9494 [2021-07-09 18:57:03,361 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 832.6ms TimeCoverageRelationStatistics Valid=260, Invalid=2602, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:57:03,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9494 states. [2021-07-09 18:57:03,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9494 to 6998. [2021-07-09 18:57:03,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6998 states, 6997 states have (on average 3.482921251965128) internal successors, (24370), 6997 states have internal predecessors, (24370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:03,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6998 states to 6998 states and 24370 transitions. [2021-07-09 18:57:03,485 INFO L78 Accepts]: Start accepts. Automaton has 6998 states and 24370 transitions. Word has length 39 [2021-07-09 18:57:03,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:03,485 INFO L482 AbstractCegarLoop]: Abstraction has 6998 states and 24370 transitions. [2021-07-09 18:57:03,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:03,485 INFO L276 IsEmpty]: Start isEmpty. Operand 6998 states and 24370 transitions. [2021-07-09 18:57:03,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:03,495 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:03,495 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:03,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-07-09 18:57:03,495 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:03,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:03,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1380833044, now seen corresponding path program 267 times [2021-07-09 18:57:03,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:03,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216448286] [2021-07-09 18:57:03,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:03,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:03,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216448286] [2021-07-09 18:57:03,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216448286] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:03,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:03,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:03,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938154885] [2021-07-09 18:57:03,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:03,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:03,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:03,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:03,664 INFO L87 Difference]: Start difference. First operand 6998 states and 24370 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:05,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:05,156 INFO L93 Difference]: Finished difference Result 9368 states and 32296 transitions. [2021-07-09 18:57:05,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-07-09 18:57:05,156 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:05,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:05,174 INFO L225 Difference]: With dead ends: 9368 [2021-07-09 18:57:05,175 INFO L226 Difference]: Without dead ends: 9317 [2021-07-09 18:57:05,175 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 785.5ms TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2021-07-09 18:57:05,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9317 states. [2021-07-09 18:57:05,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9317 to 6992. [2021-07-09 18:57:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6992 states, 6991 states have (on average 3.483764840509226) internal successors, (24355), 6991 states have internal predecessors, (24355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:05,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6992 states to 6992 states and 24355 transitions. [2021-07-09 18:57:05,295 INFO L78 Accepts]: Start accepts. Automaton has 6992 states and 24355 transitions. Word has length 39 [2021-07-09 18:57:05,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:05,295 INFO L482 AbstractCegarLoop]: Abstraction has 6992 states and 24355 transitions. [2021-07-09 18:57:05,296 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:05,296 INFO L276 IsEmpty]: Start isEmpty. Operand 6992 states and 24355 transitions. [2021-07-09 18:57:05,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:05,305 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:05,305 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:05,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-07-09 18:57:05,305 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:05,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:05,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1006500536, now seen corresponding path program 268 times [2021-07-09 18:57:05,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:05,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174363467] [2021-07-09 18:57:05,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:05,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:05,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174363467] [2021-07-09 18:57:05,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174363467] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:05,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:05,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:05,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049911253] [2021-07-09 18:57:05,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:05,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:05,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:05,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:05,478 INFO L87 Difference]: Start difference. First operand 6992 states and 24355 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:09,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:09,435 INFO L93 Difference]: Finished difference Result 14103 states and 47968 transitions. [2021-07-09 18:57:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-07-09 18:57:09,436 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:09,464 INFO L225 Difference]: With dead ends: 14103 [2021-07-09 18:57:09,464 INFO L226 Difference]: Without dead ends: 13980 [2021-07-09 18:57:09,465 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4262 ImplicationChecksByTransitivity, 2229.8ms TimeCoverageRelationStatistics Valid=871, Invalid=11561, Unknown=0, NotChecked=0, Total=12432 [2021-07-09 18:57:09,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13980 states. [2021-07-09 18:57:09,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13980 to 7220. [2021-07-09 18:57:09,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7220 states, 7219 states have (on average 3.4849702174816457) internal successors, (25158), 7219 states have internal predecessors, (25158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7220 states to 7220 states and 25158 transitions. [2021-07-09 18:57:09,619 INFO L78 Accepts]: Start accepts. Automaton has 7220 states and 25158 transitions. Word has length 39 [2021-07-09 18:57:09,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:09,619 INFO L482 AbstractCegarLoop]: Abstraction has 7220 states and 25158 transitions. [2021-07-09 18:57:09,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:09,619 INFO L276 IsEmpty]: Start isEmpty. Operand 7220 states and 25158 transitions. [2021-07-09 18:57:09,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:09,629 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:09,629 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:09,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-07-09 18:57:09,630 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:09,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:09,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1530482346, now seen corresponding path program 269 times [2021-07-09 18:57:09,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:09,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735910367] [2021-07-09 18:57:09,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:09,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:09,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735910367] [2021-07-09 18:57:09,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735910367] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:09,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:09,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:09,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565216632] [2021-07-09 18:57:09,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:09,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:09,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:09,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:09,798 INFO L87 Difference]: Start difference. First operand 7220 states and 25158 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:13,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:13,738 INFO L93 Difference]: Finished difference Result 13844 states and 47244 transitions. [2021-07-09 18:57:13,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-07-09 18:57:13,739 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:13,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:13,766 INFO L225 Difference]: With dead ends: 13844 [2021-07-09 18:57:13,766 INFO L226 Difference]: Without dead ends: 13679 [2021-07-09 18:57:13,767 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4073 ImplicationChecksByTransitivity, 2212.4ms TimeCoverageRelationStatistics Valid=834, Invalid=11156, Unknown=0, NotChecked=0, Total=11990 [2021-07-09 18:57:13,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13679 states. [2021-07-09 18:57:13,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13679 to 7212. [2021-07-09 18:57:13,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7212 states, 7211 states have (on average 3.4855082512827624) internal successors, (25134), 7211 states have internal predecessors, (25134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:13,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7212 states to 7212 states and 25134 transitions. [2021-07-09 18:57:13,918 INFO L78 Accepts]: Start accepts. Automaton has 7212 states and 25134 transitions. Word has length 39 [2021-07-09 18:57:13,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:13,918 INFO L482 AbstractCegarLoop]: Abstraction has 7212 states and 25134 transitions. [2021-07-09 18:57:13,918 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:13,918 INFO L276 IsEmpty]: Start isEmpty. Operand 7212 states and 25134 transitions. [2021-07-09 18:57:13,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:13,928 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:13,928 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:13,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-07-09 18:57:13,928 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:13,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:13,929 INFO L82 PathProgramCache]: Analyzing trace with hash -533065216, now seen corresponding path program 270 times [2021-07-09 18:57:13,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:13,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484062396] [2021-07-09 18:57:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:14,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:14,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484062396] [2021-07-09 18:57:14,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484062396] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:14,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:14,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:14,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77708976] [2021-07-09 18:57:14,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:14,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:14,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:14,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:14,096 INFO L87 Difference]: Start difference. First operand 7212 states and 25134 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:15,747 INFO L93 Difference]: Finished difference Result 9783 states and 33612 transitions. [2021-07-09 18:57:15,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-07-09 18:57:15,748 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:15,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:15,767 INFO L225 Difference]: With dead ends: 9783 [2021-07-09 18:57:15,767 INFO L226 Difference]: Without dead ends: 9665 [2021-07-09 18:57:15,767 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 909.2ms TimeCoverageRelationStatistics Valid=328, Invalid=3212, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 18:57:15,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9665 states. [2021-07-09 18:57:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9665 to 7223. [2021-07-09 18:57:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7223 states, 7222 states have (on average 3.4851841595126003) internal successors, (25170), 7222 states have internal predecessors, (25170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:15,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7223 states to 7223 states and 25170 transitions. [2021-07-09 18:57:15,895 INFO L78 Accepts]: Start accepts. Automaton has 7223 states and 25170 transitions. Word has length 39 [2021-07-09 18:57:15,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:15,895 INFO L482 AbstractCegarLoop]: Abstraction has 7223 states and 25170 transitions. [2021-07-09 18:57:15,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:15,896 INFO L276 IsEmpty]: Start isEmpty. Operand 7223 states and 25170 transitions. [2021-07-09 18:57:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:15,906 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:15,906 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:15,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-07-09 18:57:15,906 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:15,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:15,906 INFO L82 PathProgramCache]: Analyzing trace with hash 639587006, now seen corresponding path program 271 times [2021-07-09 18:57:15,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:15,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410355509] [2021-07-09 18:57:15,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:16,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:16,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:16,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410355509] [2021-07-09 18:57:16,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410355509] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:16,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:16,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:16,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939578212] [2021-07-09 18:57:16,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:16,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:16,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:16,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:16,074 INFO L87 Difference]: Start difference. First operand 7223 states and 25170 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:18,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:18,084 INFO L93 Difference]: Finished difference Result 10928 states and 37516 transitions. [2021-07-09 18:57:18,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-07-09 18:57:18,084 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:18,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:18,106 INFO L225 Difference]: With dead ends: 10928 [2021-07-09 18:57:18,106 INFO L226 Difference]: Without dead ends: 10868 [2021-07-09 18:57:18,107 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 1115.0ms TimeCoverageRelationStatistics Valid=391, Invalid=4031, Unknown=0, NotChecked=0, Total=4422 [2021-07-09 18:57:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10868 states. [2021-07-09 18:57:18,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10868 to 7221. [2021-07-09 18:57:18,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7221 states, 7220 states have (on average 3.4854570637119116) internal successors, (25165), 7220 states have internal predecessors, (25165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:18,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7221 states to 7221 states and 25165 transitions. [2021-07-09 18:57:18,245 INFO L78 Accepts]: Start accepts. Automaton has 7221 states and 25165 transitions. Word has length 39 [2021-07-09 18:57:18,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:18,245 INFO L482 AbstractCegarLoop]: Abstraction has 7221 states and 25165 transitions. [2021-07-09 18:57:18,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:18,245 INFO L276 IsEmpty]: Start isEmpty. Operand 7221 states and 25165 transitions. [2021-07-09 18:57:18,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:18,255 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:18,255 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:18,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-07-09 18:57:18,255 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:18,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:18,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1237816596, now seen corresponding path program 272 times [2021-07-09 18:57:18,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:18,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305835875] [2021-07-09 18:57:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:18,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:18,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305835875] [2021-07-09 18:57:18,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305835875] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:18,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:18,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:18,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463491934] [2021-07-09 18:57:18,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:18,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:18,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:18,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:18,429 INFO L87 Difference]: Start difference. First operand 7221 states and 25165 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:19,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:19,958 INFO L93 Difference]: Finished difference Result 9621 states and 33238 transitions. [2021-07-09 18:57:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-09 18:57:19,959 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:19,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:19,978 INFO L225 Difference]: With dead ends: 9621 [2021-07-09 18:57:19,978 INFO L226 Difference]: Without dead ends: 9530 [2021-07-09 18:57:19,979 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 805.2ms TimeCoverageRelationStatistics Valid=264, Invalid=2598, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:57:19,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9530 states. [2021-07-09 18:57:20,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9530 to 7227. [2021-07-09 18:57:20,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7227 states, 7226 states have (on average 3.483808469415998) internal successors, (25174), 7226 states have internal predecessors, (25174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7227 states to 7227 states and 25174 transitions. [2021-07-09 18:57:20,110 INFO L78 Accepts]: Start accepts. Automaton has 7227 states and 25174 transitions. Word has length 39 [2021-07-09 18:57:20,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:20,110 INFO L482 AbstractCegarLoop]: Abstraction has 7227 states and 25174 transitions. [2021-07-09 18:57:20,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:20,110 INFO L276 IsEmpty]: Start isEmpty. Operand 7227 states and 25174 transitions. [2021-07-09 18:57:20,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:20,121 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:20,121 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:20,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-07-09 18:57:20,121 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:20,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:20,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1554668494, now seen corresponding path program 273 times [2021-07-09 18:57:20,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:20,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373934310] [2021-07-09 18:57:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:20,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:20,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373934310] [2021-07-09 18:57:20,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373934310] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:20,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:20,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:20,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349440367] [2021-07-09 18:57:20,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:20,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:20,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:20,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:20,291 INFO L87 Difference]: Start difference. First operand 7227 states and 25174 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:22,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:22,353 INFO L93 Difference]: Finished difference Result 10970 states and 37747 transitions. [2021-07-09 18:57:22,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-09 18:57:22,353 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:22,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:22,375 INFO L225 Difference]: With dead ends: 10970 [2021-07-09 18:57:22,376 INFO L226 Difference]: Without dead ends: 10870 [2021-07-09 18:57:22,376 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 1094.1ms TimeCoverageRelationStatistics Valid=374, Invalid=3916, Unknown=0, NotChecked=0, Total=4290 [2021-07-09 18:57:22,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10870 states. [2021-07-09 18:57:22,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10870 to 7227. [2021-07-09 18:57:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7227 states, 7226 states have (on average 3.483670080265707) internal successors, (25173), 7226 states have internal predecessors, (25173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:22,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7227 states to 7227 states and 25173 transitions. [2021-07-09 18:57:22,543 INFO L78 Accepts]: Start accepts. Automaton has 7227 states and 25173 transitions. Word has length 39 [2021-07-09 18:57:22,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:22,543 INFO L482 AbstractCegarLoop]: Abstraction has 7227 states and 25173 transitions. [2021-07-09 18:57:22,543 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 7227 states and 25173 transitions. [2021-07-09 18:57:22,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:22,553 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:22,553 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:22,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-07-09 18:57:22,553 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:22,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:22,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1565428062, now seen corresponding path program 274 times [2021-07-09 18:57:22,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:22,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058897818] [2021-07-09 18:57:22,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:22,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:22,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058897818] [2021-07-09 18:57:22,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058897818] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:22,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:22,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:22,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537952966] [2021-07-09 18:57:22,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:22,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:22,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:22,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:22,723 INFO L87 Difference]: Start difference. First operand 7227 states and 25173 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:24,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:24,444 INFO L93 Difference]: Finished difference Result 9614 states and 33119 transitions. [2021-07-09 18:57:24,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-07-09 18:57:24,444 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:24,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:24,464 INFO L225 Difference]: With dead ends: 9614 [2021-07-09 18:57:24,464 INFO L226 Difference]: Without dead ends: 9559 [2021-07-09 18:57:24,464 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 976.5ms TimeCoverageRelationStatistics Valid=327, Invalid=3213, Unknown=0, NotChecked=0, Total=3540 [2021-07-09 18:57:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9559 states. [2021-07-09 18:57:24,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9559 to 7234. [2021-07-09 18:57:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7234 states, 7233 states have (on average 3.4829254804368865) internal successors, (25192), 7233 states have internal predecessors, (25192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:24,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7234 states to 7234 states and 25192 transitions. [2021-07-09 18:57:24,615 INFO L78 Accepts]: Start accepts. Automaton has 7234 states and 25192 transitions. Word has length 39 [2021-07-09 18:57:24,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:24,615 INFO L482 AbstractCegarLoop]: Abstraction has 7234 states and 25192 transitions. [2021-07-09 18:57:24,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:24,615 INFO L276 IsEmpty]: Start isEmpty. Operand 7234 states and 25192 transitions. [2021-07-09 18:57:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:24,625 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:24,625 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:24,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-07-09 18:57:24,626 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:24,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:24,626 INFO L82 PathProgramCache]: Analyzing trace with hash -392775840, now seen corresponding path program 275 times [2021-07-09 18:57:24,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:24,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732622066] [2021-07-09 18:57:24,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:24,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:24,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:24,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732622066] [2021-07-09 18:57:24,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732622066] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:24,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:24,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:24,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871620614] [2021-07-09 18:57:24,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:24,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:24,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:24,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:24,794 INFO L87 Difference]: Start difference. First operand 7234 states and 25192 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:26,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:26,868 INFO L93 Difference]: Finished difference Result 10789 states and 37099 transitions. [2021-07-09 18:57:26,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-07-09 18:57:26,868 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:26,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:26,889 INFO L225 Difference]: With dead ends: 10789 [2021-07-09 18:57:26,889 INFO L226 Difference]: Without dead ends: 10729 [2021-07-09 18:57:26,889 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 1162.4ms TimeCoverageRelationStatistics Valid=384, Invalid=3906, Unknown=0, NotChecked=0, Total=4290 [2021-07-09 18:57:26,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10729 states. [2021-07-09 18:57:26,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10729 to 7232. [2021-07-09 18:57:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7232 states, 7231 states have (on average 3.4830590513068733) internal successors, (25186), 7231 states have internal predecessors, (25186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:27,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7232 states to 7232 states and 25186 transitions. [2021-07-09 18:57:27,019 INFO L78 Accepts]: Start accepts. Automaton has 7232 states and 25186 transitions. Word has length 39 [2021-07-09 18:57:27,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:27,019 INFO L482 AbstractCegarLoop]: Abstraction has 7232 states and 25186 transitions. [2021-07-09 18:57:27,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:27,020 INFO L276 IsEmpty]: Start isEmpty. Operand 7232 states and 25186 transitions. [2021-07-09 18:57:27,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:27,030 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:27,030 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:27,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-07-09 18:57:27,030 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:27,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:27,030 INFO L82 PathProgramCache]: Analyzing trace with hash -460520720, now seen corresponding path program 276 times [2021-07-09 18:57:27,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:27,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062762308] [2021-07-09 18:57:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:27,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:27,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062762308] [2021-07-09 18:57:27,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062762308] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:27,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:27,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:27,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120209649] [2021-07-09 18:57:27,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:27,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:27,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:27,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:27,198 INFO L87 Difference]: Start difference. First operand 7232 states and 25186 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:28,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:28,803 INFO L93 Difference]: Finished difference Result 9539 states and 32935 transitions. [2021-07-09 18:57:28,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-07-09 18:57:28,803 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:28,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:28,822 INFO L225 Difference]: With dead ends: 9539 [2021-07-09 18:57:28,822 INFO L226 Difference]: Without dead ends: 9496 [2021-07-09 18:57:28,822 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 861.4ms TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2021-07-09 18:57:28,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9496 states. [2021-07-09 18:57:28,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9496 to 7241. [2021-07-09 18:57:28,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7241 states, 7240 states have (on average 3.481629834254144) internal successors, (25207), 7240 states have internal predecessors, (25207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:28,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7241 states to 7241 states and 25207 transitions. [2021-07-09 18:57:28,944 INFO L78 Accepts]: Start accepts. Automaton has 7241 states and 25207 transitions. Word has length 39 [2021-07-09 18:57:28,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:28,944 INFO L482 AbstractCegarLoop]: Abstraction has 7241 states and 25207 transitions. [2021-07-09 18:57:28,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:28,944 INFO L276 IsEmpty]: Start isEmpty. Operand 7241 states and 25207 transitions. [2021-07-09 18:57:28,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:28,954 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:28,954 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:28,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-07-09 18:57:28,954 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:28,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:28,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1289586416, now seen corresponding path program 277 times [2021-07-09 18:57:28,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:28,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150819501] [2021-07-09 18:57:28,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:29,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:29,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150819501] [2021-07-09 18:57:29,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150819501] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:29,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:29,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:29,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594521762] [2021-07-09 18:57:29,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:29,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:29,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:29,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:29,121 INFO L87 Difference]: Start difference. First operand 7241 states and 25207 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:30,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:30,689 INFO L93 Difference]: Finished difference Result 9626 states and 33129 transitions. [2021-07-09 18:57:30,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-07-09 18:57:30,690 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:30,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:30,708 INFO L225 Difference]: With dead ends: 9626 [2021-07-09 18:57:30,708 INFO L226 Difference]: Without dead ends: 9514 [2021-07-09 18:57:30,709 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 883.7ms TimeCoverageRelationStatistics Valid=296, Invalid=2896, Unknown=0, NotChecked=0, Total=3192 [2021-07-09 18:57:30,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9514 states. [2021-07-09 18:57:30,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9514 to 7241. [2021-07-09 18:57:30,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7241 states, 7240 states have (on average 3.4790055248618783) internal successors, (25188), 7240 states have internal predecessors, (25188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7241 states to 7241 states and 25188 transitions. [2021-07-09 18:57:30,834 INFO L78 Accepts]: Start accepts. Automaton has 7241 states and 25188 transitions. Word has length 39 [2021-07-09 18:57:30,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:30,835 INFO L482 AbstractCegarLoop]: Abstraction has 7241 states and 25188 transitions. [2021-07-09 18:57:30,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 7241 states and 25188 transitions. [2021-07-09 18:57:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:30,846 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:30,846 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:30,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-07-09 18:57:30,846 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:30,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:30,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1906804818, now seen corresponding path program 278 times [2021-07-09 18:57:30,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:30,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464122593] [2021-07-09 18:57:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:31,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:31,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464122593] [2021-07-09 18:57:31,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464122593] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:31,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:31,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:31,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973902342] [2021-07-09 18:57:31,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:31,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:31,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:31,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:31,013 INFO L87 Difference]: Start difference. First operand 7241 states and 25188 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:32,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:32,926 INFO L93 Difference]: Finished difference Result 10746 states and 36970 transitions. [2021-07-09 18:57:32,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-07-09 18:57:32,926 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:32,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:32,947 INFO L225 Difference]: With dead ends: 10746 [2021-07-09 18:57:32,947 INFO L226 Difference]: Without dead ends: 10700 [2021-07-09 18:57:32,948 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 1024.4ms TimeCoverageRelationStatistics Valid=332, Invalid=3450, Unknown=0, NotChecked=0, Total=3782 [2021-07-09 18:57:32,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10700 states. [2021-07-09 18:57:33,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10700 to 7233. [2021-07-09 18:57:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7233 states, 7232 states have (on average 3.481194690265487) internal successors, (25176), 7232 states have internal predecessors, (25176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 25176 transitions. [2021-07-09 18:57:33,086 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 25176 transitions. Word has length 39 [2021-07-09 18:57:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:33,086 INFO L482 AbstractCegarLoop]: Abstraction has 7233 states and 25176 transitions. [2021-07-09 18:57:33,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:33,086 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 25176 transitions. [2021-07-09 18:57:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:33,097 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:33,097 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:33,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-07-09 18:57:33,097 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:33,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:33,097 INFO L82 PathProgramCache]: Analyzing trace with hash 471737328, now seen corresponding path program 279 times [2021-07-09 18:57:33,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:33,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46629049] [2021-07-09 18:57:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:33,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:33,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46629049] [2021-07-09 18:57:33,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46629049] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:33,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:33,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:33,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497074339] [2021-07-09 18:57:33,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:33,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:33,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:33,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:33,275 INFO L87 Difference]: Start difference. First operand 7233 states and 25176 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:34,783 INFO L93 Difference]: Finished difference Result 9529 states and 32891 transitions. [2021-07-09 18:57:34,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-09 18:57:34,783 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:34,802 INFO L225 Difference]: With dead ends: 9529 [2021-07-09 18:57:34,802 INFO L226 Difference]: Without dead ends: 9454 [2021-07-09 18:57:34,802 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 820.8ms TimeCoverageRelationStatistics Valid=277, Invalid=2693, Unknown=0, NotChecked=0, Total=2970 [2021-07-09 18:57:34,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9454 states. [2021-07-09 18:57:34,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9454 to 7203. [2021-07-09 18:57:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7203 states, 7202 states have (on average 3.4861149680644266) internal successors, (25107), 7202 states have internal predecessors, (25107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7203 states to 7203 states and 25107 transitions. [2021-07-09 18:57:34,927 INFO L78 Accepts]: Start accepts. Automaton has 7203 states and 25107 transitions. Word has length 39 [2021-07-09 18:57:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:34,927 INFO L482 AbstractCegarLoop]: Abstraction has 7203 states and 25107 transitions. [2021-07-09 18:57:34,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 7203 states and 25107 transitions. [2021-07-09 18:57:34,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:34,937 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:34,938 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:34,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-07-09 18:57:34,938 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:34,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:34,938 INFO L82 PathProgramCache]: Analyzing trace with hash -810965790, now seen corresponding path program 280 times [2021-07-09 18:57:34,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:34,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419556806] [2021-07-09 18:57:34,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:35,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:35,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419556806] [2021-07-09 18:57:35,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419556806] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:35,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:35,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:35,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237894137] [2021-07-09 18:57:35,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:35,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:35,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:35,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:35,107 INFO L87 Difference]: Start difference. First operand 7203 states and 25107 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:36,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:36,601 INFO L93 Difference]: Finished difference Result 9464 states and 32745 transitions. [2021-07-09 18:57:36,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-07-09 18:57:36,601 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:36,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:36,620 INFO L225 Difference]: With dead ends: 9464 [2021-07-09 18:57:36,620 INFO L226 Difference]: Without dead ends: 9406 [2021-07-09 18:57:36,620 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 795.4ms TimeCoverageRelationStatistics Valid=266, Invalid=2596, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:57:36,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9406 states. [2021-07-09 18:57:36,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9406 to 7202. [2021-07-09 18:57:36,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7202 states, 7201 states have (on average 3.486321344257742) internal successors, (25105), 7201 states have internal predecessors, (25105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:36,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7202 states to 7202 states and 25105 transitions. [2021-07-09 18:57:36,745 INFO L78 Accepts]: Start accepts. Automaton has 7202 states and 25105 transitions. Word has length 39 [2021-07-09 18:57:36,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:36,745 INFO L482 AbstractCegarLoop]: Abstraction has 7202 states and 25105 transitions. [2021-07-09 18:57:36,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:36,745 INFO L276 IsEmpty]: Start isEmpty. Operand 7202 states and 25105 transitions. [2021-07-09 18:57:36,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:36,756 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:36,756 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:36,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-07-09 18:57:36,756 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:36,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:36,756 INFO L82 PathProgramCache]: Analyzing trace with hash 527790798, now seen corresponding path program 281 times [2021-07-09 18:57:36,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:36,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963847668] [2021-07-09 18:57:36,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:36,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:36,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963847668] [2021-07-09 18:57:36,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963847668] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:36,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:36,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:36,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786824952] [2021-07-09 18:57:36,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:36,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:36,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:36,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:36,923 INFO L87 Difference]: Start difference. First operand 7202 states and 25105 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:38,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 18:57:38,419 INFO L93 Difference]: Finished difference Result 9412 states and 32634 transitions. [2021-07-09 18:57:38,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 18:57:38,420 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-07-09 18:57:38,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 18:57:38,438 INFO L225 Difference]: With dead ends: 9412 [2021-07-09 18:57:38,438 INFO L226 Difference]: Without dead ends: 9280 [2021-07-09 18:57:38,439 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 796.2ms TimeCoverageRelationStatistics Valid=260, Invalid=2602, Unknown=0, NotChecked=0, Total=2862 [2021-07-09 18:57:38,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9280 states. [2021-07-09 18:57:38,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9280 to 7163. [2021-07-09 18:57:38,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7163 states, 7162 states have (on average 3.488829935772131) internal successors, (24987), 7162 states have internal predecessors, (24987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:38,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7163 states to 7163 states and 24987 transitions. [2021-07-09 18:57:38,561 INFO L78 Accepts]: Start accepts. Automaton has 7163 states and 24987 transitions. Word has length 39 [2021-07-09 18:57:38,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 18:57:38,561 INFO L482 AbstractCegarLoop]: Abstraction has 7163 states and 24987 transitions. [2021-07-09 18:57:38,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 18:57:38,561 INFO L276 IsEmpty]: Start isEmpty. Operand 7163 states and 24987 transitions. [2021-07-09 18:57:38,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-07-09 18:57:38,571 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 18:57:38,571 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 18:57:38,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-07-09 18:57:38,571 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 18:57:38,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 18:57:38,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1606461716, now seen corresponding path program 282 times [2021-07-09 18:57:38,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 18:57:38,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589689344] [2021-07-09 18:57:38,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 18:57:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 18:57:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 18:57:38,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 18:57:38,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589689344] [2021-07-09 18:57:38,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589689344] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 18:57:38,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 18:57:38,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-07-09 18:57:38,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365890860] [2021-07-09 18:57:38,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-09 18:57:38,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 18:57:38,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-09 18:57:38,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-07-09 18:57:38,740 INFO L87 Difference]: Start difference. First operand 7163 states and 24987 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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... [2021-07-09 18:57:39,844 WARN L222 SmtUtils]: Removed 2 from assertion stack [2021-07-09 18:57:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-07-09 18:57:39,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-07-09 18:57:39,844 WARN L547 AbstractCegarLoop]: Verification canceled [2021-07-09 18:57:39,846 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 18:57:39,847 WARN L196 ceAbstractionStarter]: Timeout [2021-07-09 18:57:39,847 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 06:57:39 BasicIcfg [2021-07-09 18:57:39,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 18:57:39,847 INFO L168 Benchmark]: Toolchain (without parser) took 739480.55 ms. Allocated memory was 195.0 MB in the beginning and 1.1 GB in the end (delta: 880.8 MB). Free memory was 175.0 MB in the beginning and 751.7 MB in the end (delta: -576.7 MB). Peak memory consumption was 305.2 MB. Max. memory is 8.0 GB. [2021-07-09 18:57:39,847 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 195.0 MB. Free memory is still 176.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 18:57:39,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.87 ms. Allocated memory is still 195.0 MB. Free memory was 175.0 MB in the beginning and 173.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 18:57:39,848 INFO L168 Benchmark]: Boogie Preprocessor took 12.08 ms. Allocated memory is still 195.0 MB. Free memory was 173.5 MB in the beginning and 172.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 18:57:39,848 INFO L168 Benchmark]: RCFGBuilder took 204.18 ms. Allocated memory is still 195.0 MB. Free memory was 172.5 MB in the beginning and 159.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-09 18:57:39,848 INFO L168 Benchmark]: TraceAbstraction took 739238.15 ms. Allocated memory was 195.0 MB in the beginning and 1.1 GB in the end (delta: 880.8 MB). Free memory was 158.9 MB in the beginning and 751.7 MB in the end (delta: -592.8 MB). Peak memory consumption was 289.5 MB. Max. memory is 8.0 GB. [2021-07-09 18:57:39,848 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 0.10 ms. Allocated memory is still 195.0 MB. Free memory is still 176.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 20.87 ms. Allocated memory is still 195.0 MB. Free memory was 175.0 MB in the beginning and 173.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.08 ms. Allocated memory is still 195.0 MB. Free memory was 173.5 MB in the beginning and 172.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 204.18 ms. Allocated memory is still 195.0 MB. Free memory was 172.5 MB in the beginning and 159.5 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 739238.15 ms. Allocated memory was 195.0 MB in the beginning and 1.1 GB in the end (delta: 880.8 MB). Free memory was 158.9 MB in the beginning and 751.7 MB in the end (delta: -592.8 MB). Peak memory consumption was 289.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (7163states) and FLOYD_HOARE automaton (currently 38 states, 17 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 11ms.. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 82 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 739139.6ms, OverallIterations: 282, TraceHistogramMax: 1, EmptinessCheckTime: 2721.5ms, AutomataDifference: 650128.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 176.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 75656 SDtfs, 135012 SDslu, 725821 SDs, 0 SdLazy, 796581 SolverSat, 22428 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 243563.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20290 GetRequests, 336 SyntacticMatches, 583 SemanticMatches, 19370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467516 ImplicationChecksByTransitivity, 358076.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7241occurred in iteration=276, InterpolantAutomatonStates: 18848, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 34864.7ms AutomataMinimizationTime, 281 MinimizatonAttempts, 972410 StatesRemovedByMinimization, 279 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 136.6ms SsaConstructionTime, 488.7ms SatisfiabilityAnalysisTime, 49653.4ms InterpolantComputationTime, 10998 NumberOfCodeBlocks, 10998 NumberOfCodeBlocksAsserted, 282 NumberOfCheckSat, 10716 ConstructedInterpolants, 0 QuantifiedInterpolants, 134165 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 282 InterpolantComputations, 282 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