/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 22:37:53,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 22:37:53,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 22:37:53,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 22:37:54,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 22:37:54,052 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 22:37:54,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 22:37:54,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 22:37:54,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 22:37:54,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 22:37:54,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 22:37:54,054 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 22:37:54,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 22:37:54,055 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 22:37:54,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 22:37:54,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 22:37:54,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 22:37:54,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 22:37:54,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 22:37:54,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 22:37:54,056 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 22:37:54,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 22:37:54,056 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 22:37:54,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 22:37:54,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 22:37:54,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 22:37:54,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 22:37:54,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 22:37:54,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 22:37:54,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 22:37:54,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 22:37:54,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 22:37:54,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 22:37:54,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 22:37:54,066 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 22:37:54,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 22:37:54,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 22:37:54,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 22:37:54,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 22:37:54,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 22:37:54,385 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 22:37:54,387 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 22:37:54,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl [2021-06-05 22:37:54,388 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-06-05 22:37:54,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 22:37:54,422 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 22:37:54,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 22:37:54,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 22:37:54,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 22:37:54,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:37:54" (1/1) ... [2021-06-05 22:37:54,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:37:54" (1/1) ... [2021-06-05 22:37:54,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 22:37:54,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 22:37:54,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 22:37:54,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 22:37:54,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:37:54" (1/1) ... [2021-06-05 22:37:54,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:37:54" (1/1) ... [2021-06-05 22:37:54,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:37:54" (1/1) ... [2021-06-05 22:37:54,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:37:54" (1/1) ... [2021-06-05 22:37:54,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:37:54" (1/1) ... [2021-06-05 22:37:54,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:37:54" (1/1) ... [2021-06-05 22:37:54,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:37:54" (1/1) ... [2021-06-05 22:37:54,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 22:37:54,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 22:37:54,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 22:37:54,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 22:37:54,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:37:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 22:37:54,535 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 22:37:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 22:37:54,535 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 22:37:54,536 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 22:37:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 22:37:54,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 22:37:54,536 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 22:37:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 22:37:54,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 22:37:54,536 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 22:37:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 22:37:54,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 22:37:54,537 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-05 22:37:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-05 22:37:54,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-05 22:37:54,537 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-05 22:37:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-05 22:37:54,537 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-05 22:37:54,538 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 22:37:54,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 22:37:54,767 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 22:37:54,769 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:37:54 BoogieIcfgContainer [2021-06-05 22:37:54,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 22:37:54,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 22:37:54,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 22:37:54,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 22:37:54,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 10:37:54" (1/2) ... [2021-06-05 22:37:54,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420fafc1 and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:37:54, skipping insertion in model container [2021-06-05 22:37:54,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:37:54" (2/2) ... [2021-06-05 22:37:54,775 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-06-05 22:37:54,780 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 22:37:54,780 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 22:37:54,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 22:37:54,781 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 22:37:54,844 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-06-05 22:37:54,860 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-05 22:37:54,875 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 22:37:54,876 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 22:37:54,876 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 22:37:54,876 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 22:37:54,876 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 22:37:54,876 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 22:37:54,876 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 22:37:54,877 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 22:37:54,886 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 46 transitions, 132 flow [2021-06-05 22:37:56,513 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12446 states, 12444 states have (on average 4.187078109932497) internal successors, (52104), 12445 states have internal predecessors, (52104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:37:56,559 INFO L276 IsEmpty]: Start isEmpty. Operand has 12446 states, 12444 states have (on average 4.187078109932497) internal successors, (52104), 12445 states have internal predecessors, (52104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:37:56,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:37:56,692 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:37:56,693 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:37:56,693 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:37:56,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:37:56,698 INFO L82 PathProgramCache]: Analyzing trace with hash -158356636, now seen corresponding path program 1 times [2021-06-05 22:37:56,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:37:56,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439061158] [2021-06-05 22:37:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:37:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:37:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:37:56,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:37:56,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439061158] [2021-06-05 22:37:56,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439061158] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:37:56,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:37:56,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 22:37:56,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410971329] [2021-06-05 22:37:56,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 22:37:56,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:37:56,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 22:37:56,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 22:37:57,014 INFO L87 Difference]: Start difference. First operand has 12446 states, 12444 states have (on average 4.187078109932497) internal successors, (52104), 12445 states have internal predecessors, (52104), 0 states have call successors, (0), 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 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:37:57,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:37:57,460 INFO L93 Difference]: Finished difference Result 19654 states and 81351 transitions. [2021-06-05 22:37:57,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 22:37:57,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:37:57,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:37:57,697 INFO L225 Difference]: With dead ends: 19654 [2021-06-05 22:37:57,697 INFO L226 Difference]: Without dead ends: 13110 [2021-06-05 22:37:57,698 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:37:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13110 states. [2021-06-05 22:37:58,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13110 to 13110. [2021-06-05 22:37:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13110 states, 13109 states have (on average 4.060035090395911) internal successors, (53223), 13109 states have internal predecessors, (53223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:37:58,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13110 states to 13110 states and 53223 transitions. [2021-06-05 22:37:58,621 INFO L78 Accepts]: Start accepts. Automaton has 13110 states and 53223 transitions. Word has length 39 [2021-06-05 22:37:58,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:37:58,621 INFO L482 AbstractCegarLoop]: Abstraction has 13110 states and 53223 transitions. [2021-06-05 22:37:58,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:37:58,622 INFO L276 IsEmpty]: Start isEmpty. Operand 13110 states and 53223 transitions. [2021-06-05 22:37:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:37:58,676 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:37:58,677 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:37:58,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 22:37:58,677 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:37:58,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:37:58,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1270525438, now seen corresponding path program 2 times [2021-06-05 22:37:58,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:37:58,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819766404] [2021-06-05 22:37:58,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:37:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:37:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:37:58,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:37:58,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819766404] [2021-06-05 22:37:58,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819766404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:37:58,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:37:58,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 22:37:58,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126130100] [2021-06-05 22:37:58,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 22:37:58,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:37:58,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 22:37:58,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 22:37:58,779 INFO L87 Difference]: Start difference. First operand 13110 states and 53223 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:37:59,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:37:59,140 INFO L93 Difference]: Finished difference Result 13536 states and 54819 transitions. [2021-06-05 22:37:59,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 22:37:59,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:37:59,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:37:59,200 INFO L225 Difference]: With dead ends: 13536 [2021-06-05 22:37:59,200 INFO L226 Difference]: Without dead ends: 13536 [2021-06-05 22:37:59,201 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:37:59,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13536 states. [2021-06-05 22:37:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13536 to 13536. [2021-06-05 22:37:59,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 13535 states have (on average 4.050166235685261) internal successors, (54819), 13535 states have internal predecessors, (54819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:37:59,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 54819 transitions. [2021-06-05 22:37:59,920 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 54819 transitions. Word has length 39 [2021-06-05 22:37:59,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:37:59,921 INFO L482 AbstractCegarLoop]: Abstraction has 13536 states and 54819 transitions. [2021-06-05 22:37:59,921 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:37:59,922 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 54819 transitions. [2021-06-05 22:37:59,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:37:59,977 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:37:59,978 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:37:59,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 22:37:59,978 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:37:59,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:37:59,979 INFO L82 PathProgramCache]: Analyzing trace with hash -944687490, now seen corresponding path program 3 times [2021-06-05 22:37:59,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:37:59,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905247713] [2021-06-05 22:37:59,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:00,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:00,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905247713] [2021-06-05 22:38:00,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905247713] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:00,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:00,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:38:00,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090988905] [2021-06-05 22:38:00,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 22:38:00,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:00,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 22:38:00,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:38:00,152 INFO L87 Difference]: Start difference. First operand 13536 states and 54819 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:00,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:00,654 INFO L93 Difference]: Finished difference Result 33455 states and 133148 transitions. [2021-06-05 22:38:00,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 22:38:00,655 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:00,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:00,857 INFO L225 Difference]: With dead ends: 33455 [2021-06-05 22:38:00,858 INFO L226 Difference]: Without dead ends: 33455 [2021-06-05 22:38:00,858 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:38:01,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33455 states. [2021-06-05 22:38:01,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33455 to 16657. [2021-06-05 22:38:01,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16657 states, 16656 states have (on average 4.000540345821325) internal successors, (66633), 16656 states have internal predecessors, (66633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16657 states to 16657 states and 66633 transitions. [2021-06-05 22:38:01,785 INFO L78 Accepts]: Start accepts. Automaton has 16657 states and 66633 transitions. Word has length 39 [2021-06-05 22:38:01,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:01,786 INFO L482 AbstractCegarLoop]: Abstraction has 16657 states and 66633 transitions. [2021-06-05 22:38:01,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 16657 states and 66633 transitions. [2021-06-05 22:38:01,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:01,835 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:01,836 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:01,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 22:38:01,836 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:01,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:01,837 INFO L82 PathProgramCache]: Analyzing trace with hash -696461990, now seen corresponding path program 4 times [2021-06-05 22:38:01,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:01,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714562664] [2021-06-05 22:38:01,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:01,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:01,907 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:01,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714562664] [2021-06-05 22:38:01,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714562664] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:01,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:01,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 22:38:01,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923762581] [2021-06-05 22:38:01,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 22:38:01,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:01,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 22:38:01,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:38:01,910 INFO L87 Difference]: Start difference. First operand 16657 states and 66633 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:02,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:02,544 INFO L93 Difference]: Finished difference Result 35904 states and 141978 transitions. [2021-06-05 22:38:02,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 22:38:02,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:02,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:02,664 INFO L225 Difference]: With dead ends: 35904 [2021-06-05 22:38:02,664 INFO L226 Difference]: Without dead ends: 35904 [2021-06-05 22:38:02,665 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:38:02,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35904 states. [2021-06-05 22:38:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35904 to 18510. [2021-06-05 22:38:03,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18510 states, 18509 states have (on average 3.9846020854719324) internal successors, (73751), 18509 states have internal predecessors, (73751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18510 states to 18510 states and 73751 transitions. [2021-06-05 22:38:03,588 INFO L78 Accepts]: Start accepts. Automaton has 18510 states and 73751 transitions. Word has length 39 [2021-06-05 22:38:03,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:03,588 INFO L482 AbstractCegarLoop]: Abstraction has 18510 states and 73751 transitions. [2021-06-05 22:38:03,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:03,589 INFO L276 IsEmpty]: Start isEmpty. Operand 18510 states and 73751 transitions. [2021-06-05 22:38:03,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:03,633 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:03,633 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:03,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 22:38:03,633 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:03,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:03,634 INFO L82 PathProgramCache]: Analyzing trace with hash 2051249156, now seen corresponding path program 5 times [2021-06-05 22:38:03,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:03,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640295714] [2021-06-05 22:38:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:03,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:03,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640295714] [2021-06-05 22:38:03,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640295714] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:03,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:03,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:38:03,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103345536] [2021-06-05 22:38:03,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:38:03,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:03,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:38:03,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:38:03,699 INFO L87 Difference]: Start difference. First operand 18510 states and 73751 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:04,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:04,356 INFO L93 Difference]: Finished difference Result 31750 states and 125094 transitions. [2021-06-05 22:38:04,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 22:38:04,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:04,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:04,453 INFO L225 Difference]: With dead ends: 31750 [2021-06-05 22:38:04,453 INFO L226 Difference]: Without dead ends: 31744 [2021-06-05 22:38:04,453 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:38:04,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31744 states. [2021-06-05 22:38:05,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31744 to 18770. [2021-06-05 22:38:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18770 states, 18769 states have (on average 3.9722414619851882) internal successors, (74555), 18769 states have internal predecessors, (74555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:05,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18770 states to 18770 states and 74555 transitions. [2021-06-05 22:38:05,292 INFO L78 Accepts]: Start accepts. Automaton has 18770 states and 74555 transitions. Word has length 39 [2021-06-05 22:38:05,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:05,292 INFO L482 AbstractCegarLoop]: Abstraction has 18770 states and 74555 transitions. [2021-06-05 22:38:05,293 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:05,293 INFO L276 IsEmpty]: Start isEmpty. Operand 18770 states and 74555 transitions. [2021-06-05 22:38:05,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:05,333 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:05,333 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:05,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 22:38:05,334 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:05,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:05,334 INFO L82 PathProgramCache]: Analyzing trace with hash -456932626, now seen corresponding path program 6 times [2021-06-05 22:38:05,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:05,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479952053] [2021-06-05 22:38:05,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:05,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:05,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479952053] [2021-06-05 22:38:05,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479952053] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:05,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:05,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 22:38:05,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037429832] [2021-06-05 22:38:05,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 22:38:05,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:05,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 22:38:05,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:38:05,381 INFO L87 Difference]: Start difference. First operand 18770 states and 74555 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:05,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:05,734 INFO L93 Difference]: Finished difference Result 36650 states and 143630 transitions. [2021-06-05 22:38:05,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 22:38:05,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:05,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:05,864 INFO L225 Difference]: With dead ends: 36650 [2021-06-05 22:38:05,865 INFO L226 Difference]: Without dead ends: 36632 [2021-06-05 22:38:05,865 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 29.2ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:38:06,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36632 states. [2021-06-05 22:38:06,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36632 to 19412. [2021-06-05 22:38:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19412 states, 19411 states have (on average 3.9391066920818094) internal successors, (76462), 19411 states have internal predecessors, (76462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19412 states to 19412 states and 76462 transitions. [2021-06-05 22:38:07,017 INFO L78 Accepts]: Start accepts. Automaton has 19412 states and 76462 transitions. Word has length 39 [2021-06-05 22:38:07,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:07,018 INFO L482 AbstractCegarLoop]: Abstraction has 19412 states and 76462 transitions. [2021-06-05 22:38:07,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:07,018 INFO L276 IsEmpty]: Start isEmpty. Operand 19412 states and 76462 transitions. [2021-06-05 22:38:07,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:07,065 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:07,083 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:07,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 22:38:07,083 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:07,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:07,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1928888210, now seen corresponding path program 7 times [2021-06-05 22:38:07,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:07,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094217382] [2021-06-05 22:38:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:07,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:07,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094217382] [2021-06-05 22:38:07,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094217382] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:07,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:07,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:38:07,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038754836] [2021-06-05 22:38:07,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 22:38:07,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:07,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 22:38:07,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:38:07,159 INFO L87 Difference]: Start difference. First operand 19412 states and 76462 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:07,780 INFO L93 Difference]: Finished difference Result 35951 states and 140019 transitions. [2021-06-05 22:38:07,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 22:38:07,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:07,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:07,911 INFO L225 Difference]: With dead ends: 35951 [2021-06-05 22:38:07,911 INFO L226 Difference]: Without dead ends: 35939 [2021-06-05 22:38:07,912 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:38:08,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35939 states. [2021-06-05 22:38:08,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35939 to 21351. [2021-06-05 22:38:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21351 states, 21350 states have (on average 3.9075878220140514) internal successors, (83427), 21350 states have internal predecessors, (83427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:08,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21351 states to 21351 states and 83427 transitions. [2021-06-05 22:38:08,520 INFO L78 Accepts]: Start accepts. Automaton has 21351 states and 83427 transitions. Word has length 39 [2021-06-05 22:38:08,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:08,520 INFO L482 AbstractCegarLoop]: Abstraction has 21351 states and 83427 transitions. [2021-06-05 22:38:08,520 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:08,520 INFO L276 IsEmpty]: Start isEmpty. Operand 21351 states and 83427 transitions. [2021-06-05 22:38:08,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:08,562 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:08,563 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:08,563 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 22:38:08,563 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:08,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:08,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1773619328, now seen corresponding path program 8 times [2021-06-05 22:38:08,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:08,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963041540] [2021-06-05 22:38:08,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:08,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:08,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963041540] [2021-06-05 22:38:08,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963041540] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:08,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:08,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:38:08,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912977160] [2021-06-05 22:38:08,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 22:38:08,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:08,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 22:38:08,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:38:08,596 INFO L87 Difference]: Start difference. First operand 21351 states and 83427 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:09,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:09,086 INFO L93 Difference]: Finished difference Result 35903 states and 138617 transitions. [2021-06-05 22:38:09,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 22:38:09,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:09,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:09,173 INFO L225 Difference]: With dead ends: 35903 [2021-06-05 22:38:09,173 INFO L226 Difference]: Without dead ends: 35873 [2021-06-05 22:38:09,174 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.0ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:38:09,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35873 states. [2021-06-05 22:38:09,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35873 to 21689. [2021-06-05 22:38:09,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21689 states, 21688 states have (on average 3.866008852821837) internal successors, (83846), 21688 states have internal predecessors, (83846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21689 states to 21689 states and 83846 transitions. [2021-06-05 22:38:09,971 INFO L78 Accepts]: Start accepts. Automaton has 21689 states and 83846 transitions. Word has length 39 [2021-06-05 22:38:09,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:09,972 INFO L482 AbstractCegarLoop]: Abstraction has 21689 states and 83846 transitions. [2021-06-05 22:38:09,972 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:09,972 INFO L276 IsEmpty]: Start isEmpty. Operand 21689 states and 83846 transitions. [2021-06-05 22:38:10,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:10,010 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:10,011 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:10,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 22:38:10,011 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:10,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:10,011 INFO L82 PathProgramCache]: Analyzing trace with hash 785627998, now seen corresponding path program 9 times [2021-06-05 22:38:10,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:10,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546471081] [2021-06-05 22:38:10,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:10,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:10,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:10,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546471081] [2021-06-05 22:38:10,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546471081] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:10,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:10,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 22:38:10,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565693701] [2021-06-05 22:38:10,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 22:38:10,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:10,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 22:38:10,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 22:38:10,046 INFO L87 Difference]: Start difference. First operand 21689 states and 83846 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:10,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:10,230 INFO L93 Difference]: Finished difference Result 21647 states and 83363 transitions. [2021-06-05 22:38:10,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 22:38:10,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:10,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:10,284 INFO L225 Difference]: With dead ends: 21647 [2021-06-05 22:38:10,284 INFO L226 Difference]: Without dead ends: 21605 [2021-06-05 22:38:10,284 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:38:10,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21605 states. [2021-06-05 22:38:10,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21605 to 21403. [2021-06-05 22:38:10,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21403 states, 21402 states have (on average 3.863470703672554) internal successors, (82686), 21402 states have internal predecessors, (82686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:10,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21403 states to 21403 states and 82686 transitions. [2021-06-05 22:38:10,783 INFO L78 Accepts]: Start accepts. Automaton has 21403 states and 82686 transitions. Word has length 39 [2021-06-05 22:38:10,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:10,783 INFO L482 AbstractCegarLoop]: Abstraction has 21403 states and 82686 transitions. [2021-06-05 22:38:10,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:10,783 INFO L276 IsEmpty]: Start isEmpty. Operand 21403 states and 82686 transitions. [2021-06-05 22:38:10,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:10,821 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:10,821 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:10,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 22:38:10,821 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:10,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:10,822 INFO L82 PathProgramCache]: Analyzing trace with hash 795653918, now seen corresponding path program 10 times [2021-06-05 22:38:10,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:10,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368902029] [2021-06-05 22:38:10,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:10,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:10,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368902029] [2021-06-05 22:38:10,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368902029] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:10,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:10,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 22:38:10,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853861042] [2021-06-05 22:38:10,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 22:38:10,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:10,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 22:38:10,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 22:38:10,851 INFO L87 Difference]: Start difference. First operand 21403 states and 82686 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:11,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:11,248 INFO L93 Difference]: Finished difference Result 21227 states and 81806 transitions. [2021-06-05 22:38:11,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 22:38:11,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:11,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:11,293 INFO L225 Difference]: With dead ends: 21227 [2021-06-05 22:38:11,294 INFO L226 Difference]: Without dead ends: 21203 [2021-06-05 22:38:11,294 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:38:11,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21203 states. [2021-06-05 22:38:11,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21203 to 21050. [2021-06-05 22:38:11,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21050 states, 21049 states have (on average 3.8641740700270795) internal successors, (81337), 21049 states have internal predecessors, (81337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:11,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21050 states to 21050 states and 81337 transitions. [2021-06-05 22:38:11,669 INFO L78 Accepts]: Start accepts. Automaton has 21050 states and 81337 transitions. Word has length 39 [2021-06-05 22:38:11,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:11,670 INFO L482 AbstractCegarLoop]: Abstraction has 21050 states and 81337 transitions. [2021-06-05 22:38:11,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:11,670 INFO L276 IsEmpty]: Start isEmpty. Operand 21050 states and 81337 transitions. [2021-06-05 22:38:11,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:11,702 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:11,702 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:11,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 22:38:11,702 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:11,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:11,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1630683528, now seen corresponding path program 11 times [2021-06-05 22:38:11,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:11,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496309235] [2021-06-05 22:38:11,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:11,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:11,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:11,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496309235] [2021-06-05 22:38:11,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496309235] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:11,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:11,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:38:11,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291080159] [2021-06-05 22:38:11,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:38:11,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:11,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:38:11,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:38:11,748 INFO L87 Difference]: Start difference. First operand 21050 states and 81337 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:12,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:12,326 INFO L93 Difference]: Finished difference Result 41364 states and 158003 transitions. [2021-06-05 22:38:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:38:12,326 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:12,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:12,447 INFO L225 Difference]: With dead ends: 41364 [2021-06-05 22:38:12,447 INFO L226 Difference]: Without dead ends: 41364 [2021-06-05 22:38:12,447 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:38:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41364 states. [2021-06-05 22:38:12,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41364 to 24666. [2021-06-05 22:38:12,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24666 states, 24665 states have (on average 3.801054125278735) internal successors, (93753), 24665 states have internal predecessors, (93753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:13,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24666 states to 24666 states and 93753 transitions. [2021-06-05 22:38:13,017 INFO L78 Accepts]: Start accepts. Automaton has 24666 states and 93753 transitions. Word has length 39 [2021-06-05 22:38:13,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:13,018 INFO L482 AbstractCegarLoop]: Abstraction has 24666 states and 93753 transitions. [2021-06-05 22:38:13,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:13,018 INFO L276 IsEmpty]: Start isEmpty. Operand 24666 states and 93753 transitions. [2021-06-05 22:38:13,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:13,063 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:13,063 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:13,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 22:38:13,064 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:13,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1481740522, now seen corresponding path program 12 times [2021-06-05 22:38:13,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:13,064 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526057186] [2021-06-05 22:38:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:13,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:13,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:13,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526057186] [2021-06-05 22:38:13,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526057186] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:13,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:13,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 22:38:13,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376832894] [2021-06-05 22:38:13,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 22:38:13,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:13,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 22:38:13,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 22:38:13,109 INFO L87 Difference]: Start difference. First operand 24666 states and 93753 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:13,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:13,478 INFO L93 Difference]: Finished difference Result 24060 states and 91079 transitions. [2021-06-05 22:38:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 22:38:13,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:13,527 INFO L225 Difference]: With dead ends: 24060 [2021-06-05 22:38:13,527 INFO L226 Difference]: Without dead ends: 23997 [2021-06-05 22:38:13,527 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.9ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:38:13,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23997 states. [2021-06-05 22:38:13,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23997 to 23727. [2021-06-05 22:38:13,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23727 states, 23726 states have (on average 3.8022844137233416) internal successors, (90213), 23726 states have internal predecessors, (90213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:13,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23727 states to 23727 states and 90213 transitions. [2021-06-05 22:38:13,958 INFO L78 Accepts]: Start accepts. Automaton has 23727 states and 90213 transitions. Word has length 39 [2021-06-05 22:38:13,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:13,958 INFO L482 AbstractCegarLoop]: Abstraction has 23727 states and 90213 transitions. [2021-06-05 22:38:13,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:13,958 INFO L276 IsEmpty]: Start isEmpty. Operand 23727 states and 90213 transitions. [2021-06-05 22:38:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:13,998 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:13,998 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:13,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 22:38:13,998 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:13,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:13,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1323199580, now seen corresponding path program 13 times [2021-06-05 22:38:13,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:13,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580410564] [2021-06-05 22:38:13,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:14,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:14,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:14,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580410564] [2021-06-05 22:38:14,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580410564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:14,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:14,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:38:14,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966157960] [2021-06-05 22:38:14,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 22:38:14,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:14,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 22:38:14,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:38:14,033 INFO L87 Difference]: Start difference. First operand 23727 states and 90213 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:14,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:14,470 INFO L93 Difference]: Finished difference Result 39912 states and 151078 transitions. [2021-06-05 22:38:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 22:38:14,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:14,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:14,589 INFO L225 Difference]: With dead ends: 39912 [2021-06-05 22:38:14,589 INFO L226 Difference]: Without dead ends: 39864 [2021-06-05 22:38:14,589 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:38:14,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39864 states. [2021-06-05 22:38:15,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39864 to 24281. [2021-06-05 22:38:15,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24281 states, 24280 states have (on average 3.7902388797364086) internal successors, (92027), 24280 states have internal predecessors, (92027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24281 states to 24281 states and 92027 transitions. [2021-06-05 22:38:15,221 INFO L78 Accepts]: Start accepts. Automaton has 24281 states and 92027 transitions. Word has length 39 [2021-06-05 22:38:15,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:15,222 INFO L482 AbstractCegarLoop]: Abstraction has 24281 states and 92027 transitions. [2021-06-05 22:38:15,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:15,222 INFO L276 IsEmpty]: Start isEmpty. Operand 24281 states and 92027 transitions. [2021-06-05 22:38:15,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:15,262 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:15,262 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:15,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 22:38:15,262 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:15,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:15,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1923174852, now seen corresponding path program 14 times [2021-06-05 22:38:15,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:15,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098210387] [2021-06-05 22:38:15,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:15,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:15,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098210387] [2021-06-05 22:38:15,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098210387] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:15,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:15,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:38:15,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396896428] [2021-06-05 22:38:15,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 22:38:15,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:15,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 22:38:15,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:38:15,300 INFO L87 Difference]: Start difference. First operand 24281 states and 92027 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:15,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:15,723 INFO L93 Difference]: Finished difference Result 32456 states and 120014 transitions. [2021-06-05 22:38:15,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 22:38:15,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:15,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:15,807 INFO L225 Difference]: With dead ends: 32456 [2021-06-05 22:38:15,807 INFO L226 Difference]: Without dead ends: 32320 [2021-06-05 22:38:15,807 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:38:15,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32320 states. [2021-06-05 22:38:16,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32320 to 20818. [2021-06-05 22:38:16,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20818 states, 20817 states have (on average 3.6923668155834175) internal successors, (76864), 20817 states have internal predecessors, (76864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20818 states to 20818 states and 76864 transitions. [2021-06-05 22:38:16,222 INFO L78 Accepts]: Start accepts. Automaton has 20818 states and 76864 transitions. Word has length 39 [2021-06-05 22:38:16,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:16,222 INFO L482 AbstractCegarLoop]: Abstraction has 20818 states and 76864 transitions. [2021-06-05 22:38:16,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:16,223 INFO L276 IsEmpty]: Start isEmpty. Operand 20818 states and 76864 transitions. [2021-06-05 22:38:16,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:16,253 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:16,253 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:16,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 22:38:16,254 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:16,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:16,254 INFO L82 PathProgramCache]: Analyzing trace with hash -62454086, now seen corresponding path program 15 times [2021-06-05 22:38:16,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:16,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696132911] [2021-06-05 22:38:16,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:16,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:16,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:16,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696132911] [2021-06-05 22:38:16,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696132911] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:16,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:16,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 22:38:16,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489233414] [2021-06-05 22:38:16,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 22:38:16,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:16,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 22:38:16,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:38:16,297 INFO L87 Difference]: Start difference. First operand 20818 states and 76864 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:16,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:16,532 INFO L93 Difference]: Finished difference Result 36117 states and 131263 transitions. [2021-06-05 22:38:16,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 22:38:16,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:16,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:16,609 INFO L225 Difference]: With dead ends: 36117 [2021-06-05 22:38:16,610 INFO L226 Difference]: Without dead ends: 35877 [2021-06-05 22:38:16,610 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 22.5ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:38:16,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35877 states. [2021-06-05 22:38:17,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35877 to 21634. [2021-06-05 22:38:17,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21634 states, 21633 states have (on average 3.6624139046826607) internal successors, (79229), 21633 states have internal predecessors, (79229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:17,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21634 states to 21634 states and 79229 transitions. [2021-06-05 22:38:17,302 INFO L78 Accepts]: Start accepts. Automaton has 21634 states and 79229 transitions. Word has length 39 [2021-06-05 22:38:17,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:17,303 INFO L482 AbstractCegarLoop]: Abstraction has 21634 states and 79229 transitions. [2021-06-05 22:38:17,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:17,303 INFO L276 IsEmpty]: Start isEmpty. Operand 21634 states and 79229 transitions. [2021-06-05 22:38:17,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:17,335 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:17,335 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:17,335 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 22:38:17,336 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:17,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:17,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1604655972, now seen corresponding path program 16 times [2021-06-05 22:38:17,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:17,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949300191] [2021-06-05 22:38:17,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:17,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:17,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:17,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949300191] [2021-06-05 22:38:17,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949300191] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:17,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:17,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:38:17,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316851094] [2021-06-05 22:38:17,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:38:17,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:17,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:38:17,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:38:17,397 INFO L87 Difference]: Start difference. First operand 21634 states and 79229 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:17,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:17,694 INFO L93 Difference]: Finished difference Result 38178 states and 137087 transitions. [2021-06-05 22:38:17,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:38:17,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:17,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:17,774 INFO L225 Difference]: With dead ends: 38178 [2021-06-05 22:38:17,774 INFO L226 Difference]: Without dead ends: 37920 [2021-06-05 22:38:17,775 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 46.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:38:17,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37920 states. [2021-06-05 22:38:18,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37920 to 22991. [2021-06-05 22:38:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22991 states, 22990 states have (on average 3.6151805132666377) internal successors, (83113), 22990 states have internal predecessors, (83113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:18,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22991 states to 22991 states and 83113 transitions. [2021-06-05 22:38:18,524 INFO L78 Accepts]: Start accepts. Automaton has 22991 states and 83113 transitions. Word has length 39 [2021-06-05 22:38:18,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:18,524 INFO L482 AbstractCegarLoop]: Abstraction has 22991 states and 83113 transitions. [2021-06-05 22:38:18,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:18,524 INFO L276 IsEmpty]: Start isEmpty. Operand 22991 states and 83113 transitions. [2021-06-05 22:38:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:18,559 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:18,560 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:18,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 22:38:18,560 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:18,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:18,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1808174234, now seen corresponding path program 17 times [2021-06-05 22:38:18,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:18,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931712385] [2021-06-05 22:38:18,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:18,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:18,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931712385] [2021-06-05 22:38:18,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931712385] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:18,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:18,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 22:38:18,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090020022] [2021-06-05 22:38:18,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 22:38:18,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:18,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 22:38:18,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:38:18,598 INFO L87 Difference]: Start difference. First operand 22991 states and 83113 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:18,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:18,899 INFO L93 Difference]: Finished difference Result 37550 states and 133913 transitions. [2021-06-05 22:38:18,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 22:38:18,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:18,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:18,998 INFO L225 Difference]: With dead ends: 37550 [2021-06-05 22:38:18,998 INFO L226 Difference]: Without dead ends: 37350 [2021-06-05 22:38:18,998 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:38:19,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37350 states. [2021-06-05 22:38:19,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37350 to 22436. [2021-06-05 22:38:19,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22436 states, 22435 states have (on average 3.5778916870960553) internal successors, (80270), 22435 states have internal predecessors, (80270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:19,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22436 states to 22436 states and 80270 transitions. [2021-06-05 22:38:19,861 INFO L78 Accepts]: Start accepts. Automaton has 22436 states and 80270 transitions. Word has length 39 [2021-06-05 22:38:19,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:19,862 INFO L482 AbstractCegarLoop]: Abstraction has 22436 states and 80270 transitions. [2021-06-05 22:38:19,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:19,862 INFO L276 IsEmpty]: Start isEmpty. Operand 22436 states and 80270 transitions. [2021-06-05 22:38:19,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:19,897 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:19,897 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:19,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 22:38:19,897 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:19,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:19,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1070739068, now seen corresponding path program 18 times [2021-06-05 22:38:19,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:19,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089085361] [2021-06-05 22:38:19,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:19,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:19,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089085361] [2021-06-05 22:38:19,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089085361] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:19,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:19,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:38:19,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588048700] [2021-06-05 22:38:19,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:38:19,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:19,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:38:19,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:38:19,942 INFO L87 Difference]: Start difference. First operand 22436 states and 80270 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:20,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:20,326 INFO L93 Difference]: Finished difference Result 35683 states and 123807 transitions. [2021-06-05 22:38:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:38:20,327 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:20,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:20,404 INFO L225 Difference]: With dead ends: 35683 [2021-06-05 22:38:20,404 INFO L226 Difference]: Without dead ends: 35127 [2021-06-05 22:38:20,408 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 43.3ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:38:20,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35127 states. [2021-06-05 22:38:21,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35127 to 21141. [2021-06-05 22:38:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21141 states, 21140 states have (on average 3.479091769157994) internal successors, (73548), 21140 states have internal predecessors, (73548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21141 states to 21141 states and 73548 transitions. [2021-06-05 22:38:21,127 INFO L78 Accepts]: Start accepts. Automaton has 21141 states and 73548 transitions. Word has length 39 [2021-06-05 22:38:21,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:21,127 INFO L482 AbstractCegarLoop]: Abstraction has 21141 states and 73548 transitions. [2021-06-05 22:38:21,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:21,127 INFO L276 IsEmpty]: Start isEmpty. Operand 21141 states and 73548 transitions. [2021-06-05 22:38:21,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:21,156 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:21,156 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:21,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 22:38:21,156 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:21,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:21,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1489406878, now seen corresponding path program 19 times [2021-06-05 22:38:21,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:21,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271438153] [2021-06-05 22:38:21,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:21,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:21,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271438153] [2021-06-05 22:38:21,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271438153] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:21,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:21,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:38:21,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093537017] [2021-06-05 22:38:21,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 22:38:21,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:21,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 22:38:21,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:38:21,207 INFO L87 Difference]: Start difference. First operand 21141 states and 73548 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:21,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:21,401 INFO L93 Difference]: Finished difference Result 34526 states and 119373 transitions. [2021-06-05 22:38:21,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 22:38:21,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:21,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:21,467 INFO L225 Difference]: With dead ends: 34526 [2021-06-05 22:38:21,467 INFO L226 Difference]: Without dead ends: 34342 [2021-06-05 22:38:21,467 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.4ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:38:21,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34342 states. [2021-06-05 22:38:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34342 to 20667. [2021-06-05 22:38:22,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20667 states, 20666 states have (on average 3.459498693506242) internal successors, (71494), 20666 states have internal predecessors, (71494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20667 states to 20667 states and 71494 transitions. [2021-06-05 22:38:22,194 INFO L78 Accepts]: Start accepts. Automaton has 20667 states and 71494 transitions. Word has length 39 [2021-06-05 22:38:22,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:22,194 INFO L482 AbstractCegarLoop]: Abstraction has 20667 states and 71494 transitions. [2021-06-05 22:38:22,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:22,195 INFO L276 IsEmpty]: Start isEmpty. Operand 20667 states and 71494 transitions. [2021-06-05 22:38:22,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:22,224 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:22,224 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:22,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 22:38:22,224 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:22,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:22,224 INFO L82 PathProgramCache]: Analyzing trace with hash 921984860, now seen corresponding path program 20 times [2021-06-05 22:38:22,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:22,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429821009] [2021-06-05 22:38:22,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:22,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:22,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429821009] [2021-06-05 22:38:22,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429821009] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:22,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:22,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:38:22,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012414964] [2021-06-05 22:38:22,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:38:22,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:22,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:38:22,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:38:22,272 INFO L87 Difference]: Start difference. First operand 20667 states and 71494 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:22,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:22,560 INFO L93 Difference]: Finished difference Result 30341 states and 101554 transitions. [2021-06-05 22:38:22,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:38:22,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:22,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:22,615 INFO L225 Difference]: With dead ends: 30341 [2021-06-05 22:38:22,615 INFO L226 Difference]: Without dead ends: 28975 [2021-06-05 22:38:22,615 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 45.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:38:22,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28975 states. [2021-06-05 22:38:22,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28975 to 18475. [2021-06-05 22:38:22,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18475 states, 18474 states have (on average 3.362725993287864) internal successors, (62123), 18474 states have internal predecessors, (62123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:22,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18475 states to 18475 states and 62123 transitions. [2021-06-05 22:38:22,968 INFO L78 Accepts]: Start accepts. Automaton has 18475 states and 62123 transitions. Word has length 39 [2021-06-05 22:38:22,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:22,969 INFO L482 AbstractCegarLoop]: Abstraction has 18475 states and 62123 transitions. [2021-06-05 22:38:22,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:22,969 INFO L276 IsEmpty]: Start isEmpty. Operand 18475 states and 62123 transitions. [2021-06-05 22:38:22,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:22,993 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:22,994 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:22,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 22:38:22,994 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:22,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:22,994 INFO L82 PathProgramCache]: Analyzing trace with hash -2140176006, now seen corresponding path program 21 times [2021-06-05 22:38:22,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:22,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913845682] [2021-06-05 22:38:22,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:23,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:23,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913845682] [2021-06-05 22:38:23,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913845682] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:23,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:23,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:38:23,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080983980] [2021-06-05 22:38:23,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:38:23,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:23,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:38:23,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:38:23,041 INFO L87 Difference]: Start difference. First operand 18475 states and 62123 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:23,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:23,579 INFO L93 Difference]: Finished difference Result 28267 states and 94087 transitions. [2021-06-05 22:38:23,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:38:23,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:23,628 INFO L225 Difference]: With dead ends: 28267 [2021-06-05 22:38:23,628 INFO L226 Difference]: Without dead ends: 28159 [2021-06-05 22:38:23,628 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 32.3ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:38:23,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28159 states. [2021-06-05 22:38:23,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28159 to 18449. [2021-06-05 22:38:23,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18449 states, 18448 states have (on average 3.357328707718994) internal successors, (61936), 18448 states have internal predecessors, (61936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:23,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18449 states to 18449 states and 61936 transitions. [2021-06-05 22:38:23,977 INFO L78 Accepts]: Start accepts. Automaton has 18449 states and 61936 transitions. Word has length 39 [2021-06-05 22:38:23,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:23,977 INFO L482 AbstractCegarLoop]: Abstraction has 18449 states and 61936 transitions. [2021-06-05 22:38:23,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:23,977 INFO L276 IsEmpty]: Start isEmpty. Operand 18449 states and 61936 transitions. [2021-06-05 22:38:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:24,003 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:24,003 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:24,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 22:38:24,003 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:24,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:24,004 INFO L82 PathProgramCache]: Analyzing trace with hash -539276934, now seen corresponding path program 22 times [2021-06-05 22:38:24,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:24,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800461762] [2021-06-05 22:38:24,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:24,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:24,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800461762] [2021-06-05 22:38:24,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800461762] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:24,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:24,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:38:24,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660589330] [2021-06-05 22:38:24,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:38:24,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:24,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:38:24,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:38:24,053 INFO L87 Difference]: Start difference. First operand 18449 states and 61936 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:24,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:24,360 INFO L93 Difference]: Finished difference Result 28032 states and 93171 transitions. [2021-06-05 22:38:24,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 22:38:24,361 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:24,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:24,416 INFO L225 Difference]: With dead ends: 28032 [2021-06-05 22:38:24,416 INFO L226 Difference]: Without dead ends: 27672 [2021-06-05 22:38:24,417 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 48.0ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:38:24,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27672 states. [2021-06-05 22:38:24,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27672 to 18187. [2021-06-05 22:38:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18187 states, 18186 states have (on average 3.346530298031453) internal successors, (60860), 18186 states have internal predecessors, (60860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18187 states to 18187 states and 60860 transitions. [2021-06-05 22:38:24,942 INFO L78 Accepts]: Start accepts. Automaton has 18187 states and 60860 transitions. Word has length 39 [2021-06-05 22:38:24,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:24,942 INFO L482 AbstractCegarLoop]: Abstraction has 18187 states and 60860 transitions. [2021-06-05 22:38:24,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand 18187 states and 60860 transitions. [2021-06-05 22:38:24,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:24,968 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:24,968 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:24,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 22:38:24,968 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:24,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:24,969 INFO L82 PathProgramCache]: Analyzing trace with hash 2076747928, now seen corresponding path program 23 times [2021-06-05 22:38:24,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:24,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782984134] [2021-06-05 22:38:24,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:25,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:25,038 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782984134] [2021-06-05 22:38:25,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782984134] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:25,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:25,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:38:25,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63689682] [2021-06-05 22:38:25,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:38:25,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:25,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:38:25,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:38:25,040 INFO L87 Difference]: Start difference. First operand 18187 states and 60860 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:25,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:25,474 INFO L93 Difference]: Finished difference Result 27773 states and 91779 transitions. [2021-06-05 22:38:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:38:25,475 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:25,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:25,529 INFO L225 Difference]: With dead ends: 27773 [2021-06-05 22:38:25,529 INFO L226 Difference]: Without dead ends: 27521 [2021-06-05 22:38:25,529 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:38:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27521 states. [2021-06-05 22:38:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27521 to 18576. [2021-06-05 22:38:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18576 states, 18575 states have (on average 3.3176312247644684) internal successors, (61625), 18575 states have internal predecessors, (61625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:25,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18576 states to 18576 states and 61625 transitions. [2021-06-05 22:38:25,943 INFO L78 Accepts]: Start accepts. Automaton has 18576 states and 61625 transitions. Word has length 39 [2021-06-05 22:38:25,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:25,943 INFO L482 AbstractCegarLoop]: Abstraction has 18576 states and 61625 transitions. [2021-06-05 22:38:25,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:25,944 INFO L276 IsEmpty]: Start isEmpty. Operand 18576 states and 61625 transitions. [2021-06-05 22:38:25,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:25,968 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:25,968 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:25,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 22:38:25,968 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:25,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:25,969 INFO L82 PathProgramCache]: Analyzing trace with hash 904564570, now seen corresponding path program 24 times [2021-06-05 22:38:25,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:25,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428609443] [2021-06-05 22:38:25,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:26,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:26,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428609443] [2021-06-05 22:38:26,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428609443] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:26,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:26,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:38:26,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076801679] [2021-06-05 22:38:26,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:38:26,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:26,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:38:26,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:38:26,010 INFO L87 Difference]: Start difference. First operand 18576 states and 61625 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:26,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:26,467 INFO L93 Difference]: Finished difference Result 28814 states and 94330 transitions. [2021-06-05 22:38:26,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:38:26,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:26,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:26,523 INFO L225 Difference]: With dead ends: 28814 [2021-06-05 22:38:26,523 INFO L226 Difference]: Without dead ends: 28630 [2021-06-05 22:38:26,523 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 32.1ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:38:26,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28630 states. [2021-06-05 22:38:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28630 to 18552. [2021-06-05 22:38:26,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18552 states, 18551 states have (on average 3.308986038488491) internal successors, (61385), 18551 states have internal predecessors, (61385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:26,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18552 states to 18552 states and 61385 transitions. [2021-06-05 22:38:26,902 INFO L78 Accepts]: Start accepts. Automaton has 18552 states and 61385 transitions. Word has length 39 [2021-06-05 22:38:26,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:26,902 INFO L482 AbstractCegarLoop]: Abstraction has 18552 states and 61385 transitions. [2021-06-05 22:38:26,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:26,902 INFO L276 IsEmpty]: Start isEmpty. Operand 18552 states and 61385 transitions. [2021-06-05 22:38:26,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:26,927 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:26,928 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:26,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 22:38:26,928 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:26,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:26,928 INFO L82 PathProgramCache]: Analyzing trace with hash -984736934, now seen corresponding path program 25 times [2021-06-05 22:38:26,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:26,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166738418] [2021-06-05 22:38:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:26,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:26,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:26,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166738418] [2021-06-05 22:38:26,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166738418] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:26,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:26,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:38:26,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566977268] [2021-06-05 22:38:26,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:38:26,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:26,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:38:26,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:38:26,985 INFO L87 Difference]: Start difference. First operand 18552 states and 61385 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:27,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:27,285 INFO L93 Difference]: Finished difference Result 28644 states and 93689 transitions. [2021-06-05 22:38:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 22:38:27,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:27,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:27,354 INFO L225 Difference]: With dead ends: 28644 [2021-06-05 22:38:27,355 INFO L226 Difference]: Without dead ends: 27824 [2021-06-05 22:38:27,355 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:38:27,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27824 states. [2021-06-05 22:38:27,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27824 to 17898. [2021-06-05 22:38:27,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17898 states, 17897 states have (on average 3.2920601218081242) internal successors, (58918), 17897 states have internal predecessors, (58918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17898 states to 17898 states and 58918 transitions. [2021-06-05 22:38:27,977 INFO L78 Accepts]: Start accepts. Automaton has 17898 states and 58918 transitions. Word has length 39 [2021-06-05 22:38:27,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:27,977 INFO L482 AbstractCegarLoop]: Abstraction has 17898 states and 58918 transitions. [2021-06-05 22:38:27,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 17898 states and 58918 transitions. [2021-06-05 22:38:28,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:28,004 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:28,004 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:28,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 22:38:28,004 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:28,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:28,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1731722632, now seen corresponding path program 26 times [2021-06-05 22:38:28,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:28,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672512072] [2021-06-05 22:38:28,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:28,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:28,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:28,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672512072] [2021-06-05 22:38:28,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672512072] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:28,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:28,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:38:28,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129618427] [2021-06-05 22:38:28,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:38:28,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:28,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:38:28,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:38:28,063 INFO L87 Difference]: Start difference. First operand 17898 states and 58918 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:28,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:28,399 INFO L93 Difference]: Finished difference Result 28142 states and 91490 transitions. [2021-06-05 22:38:28,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:38:28,400 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:28,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:28,451 INFO L225 Difference]: With dead ends: 28142 [2021-06-05 22:38:28,451 INFO L226 Difference]: Without dead ends: 26796 [2021-06-05 22:38:28,452 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 75.1ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:38:28,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26796 states. [2021-06-05 22:38:28,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26796 to 17614. [2021-06-05 22:38:28,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17614 states, 17613 states have (on average 3.2751376823936864) internal successors, (57685), 17613 states have internal predecessors, (57685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17614 states to 17614 states and 57685 transitions. [2021-06-05 22:38:28,800 INFO L78 Accepts]: Start accepts. Automaton has 17614 states and 57685 transitions. Word has length 39 [2021-06-05 22:38:28,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:28,800 INFO L482 AbstractCegarLoop]: Abstraction has 17614 states and 57685 transitions. [2021-06-05 22:38:28,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:28,801 INFO L276 IsEmpty]: Start isEmpty. Operand 17614 states and 57685 transitions. [2021-06-05 22:38:28,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:28,824 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:28,824 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:28,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 22:38:28,824 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:28,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:28,825 INFO L82 PathProgramCache]: Analyzing trace with hash -652913060, now seen corresponding path program 27 times [2021-06-05 22:38:28,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:28,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440404797] [2021-06-05 22:38:28,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:29,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:29,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440404797] [2021-06-05 22:38:29,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440404797] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:29,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:29,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:38:29,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129593753] [2021-06-05 22:38:29,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:38:29,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:29,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:38:29,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:38:29,172 INFO L87 Difference]: Start difference. First operand 17614 states and 57685 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:29,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:29,543 INFO L93 Difference]: Finished difference Result 27764 states and 89075 transitions. [2021-06-05 22:38:29,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:38:29,543 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:29,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:29,591 INFO L225 Difference]: With dead ends: 27764 [2021-06-05 22:38:29,591 INFO L226 Difference]: Without dead ends: 26272 [2021-06-05 22:38:29,591 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 358.1ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:38:29,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26272 states. [2021-06-05 22:38:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26272 to 16042. [2021-06-05 22:38:29,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16042 states, 16041 states have (on average 3.2308459572345862) internal successors, (51826), 16041 states have internal predecessors, (51826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16042 states to 16042 states and 51826 transitions. [2021-06-05 22:38:29,899 INFO L78 Accepts]: Start accepts. Automaton has 16042 states and 51826 transitions. Word has length 39 [2021-06-05 22:38:29,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:29,899 INFO L482 AbstractCegarLoop]: Abstraction has 16042 states and 51826 transitions. [2021-06-05 22:38:29,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:29,900 INFO L276 IsEmpty]: Start isEmpty. Operand 16042 states and 51826 transitions. [2021-06-05 22:38:29,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:29,922 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:29,922 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:29,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 22:38:29,922 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:29,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:29,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1990404212, now seen corresponding path program 28 times [2021-06-05 22:38:29,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:29,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210987381] [2021-06-05 22:38:29,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:29,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:29,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:29,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210987381] [2021-06-05 22:38:29,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210987381] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:29,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:29,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:38:29,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107815450] [2021-06-05 22:38:29,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 22:38:29,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:29,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 22:38:29,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:38:29,951 INFO L87 Difference]: Start difference. First operand 16042 states and 51826 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:30,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:30,098 INFO L93 Difference]: Finished difference Result 26251 states and 83635 transitions. [2021-06-05 22:38:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 22:38:30,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:30,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:30,145 INFO L225 Difference]: With dead ends: 26251 [2021-06-05 22:38:30,145 INFO L226 Difference]: Without dead ends: 25907 [2021-06-05 22:38:30,145 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:38:30,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25907 states. [2021-06-05 22:38:30,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25907 to 15530. [2021-06-05 22:38:30,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15530 states, 15529 states have (on average 3.2065168394616523) internal successors, (49794), 15529 states have internal predecessors, (49794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15530 states to 15530 states and 49794 transitions. [2021-06-05 22:38:30,578 INFO L78 Accepts]: Start accepts. Automaton has 15530 states and 49794 transitions. Word has length 39 [2021-06-05 22:38:30,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:30,578 INFO L482 AbstractCegarLoop]: Abstraction has 15530 states and 49794 transitions. [2021-06-05 22:38:30,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:30,578 INFO L276 IsEmpty]: Start isEmpty. Operand 15530 states and 49794 transitions. [2021-06-05 22:38:30,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:30,598 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:30,599 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:30,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 22:38:30,599 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:30,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:30,599 INFO L82 PathProgramCache]: Analyzing trace with hash -486861366, now seen corresponding path program 29 times [2021-06-05 22:38:30,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:30,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925597157] [2021-06-05 22:38:30,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:30,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:30,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:30,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925597157] [2021-06-05 22:38:30,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925597157] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:30,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:30,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:38:30,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507834057] [2021-06-05 22:38:30,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:38:30,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:30,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:38:30,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:38:30,645 INFO L87 Difference]: Start difference. First operand 15530 states and 49794 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:30,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:30,910 INFO L93 Difference]: Finished difference Result 19376 states and 57898 transitions. [2021-06-05 22:38:30,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:38:30,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:30,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:30,948 INFO L225 Difference]: With dead ends: 19376 [2021-06-05 22:38:30,948 INFO L226 Difference]: Without dead ends: 17805 [2021-06-05 22:38:30,948 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 36.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:38:30,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17805 states. [2021-06-05 22:38:31,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17805 to 10863. [2021-06-05 22:38:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10863 states, 10862 states have (on average 3.029736696740932) internal successors, (32909), 10862 states have internal predecessors, (32909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:31,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 32909 transitions. [2021-06-05 22:38:31,241 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 32909 transitions. Word has length 39 [2021-06-05 22:38:31,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:31,241 INFO L482 AbstractCegarLoop]: Abstraction has 10863 states and 32909 transitions. [2021-06-05 22:38:31,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:31,241 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 32909 transitions. [2021-06-05 22:38:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:31,256 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:31,256 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:31,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 22:38:31,256 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:31,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:31,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1712472694, now seen corresponding path program 30 times [2021-06-05 22:38:31,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:31,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8835470] [2021-06-05 22:38:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:31,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:31,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8835470] [2021-06-05 22:38:31,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8835470] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:31,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:31,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:38:31,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406160619] [2021-06-05 22:38:31,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:38:31,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:31,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:38:31,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:38:31,304 INFO L87 Difference]: Start difference. First operand 10863 states and 32909 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:31,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:31,556 INFO L93 Difference]: Finished difference Result 16060 states and 47771 transitions. [2021-06-05 22:38:31,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 22:38:31,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:31,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:31,578 INFO L225 Difference]: With dead ends: 16060 [2021-06-05 22:38:31,578 INFO L226 Difference]: Without dead ends: 15380 [2021-06-05 22:38:31,579 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 22:38:31,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15380 states. [2021-06-05 22:38:31,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15380 to 10289. [2021-06-05 22:38:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10289 states, 10288 states have (on average 3.010303265940902) internal successors, (30970), 10288 states have internal predecessors, (30970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10289 states to 10289 states and 30970 transitions. [2021-06-05 22:38:31,739 INFO L78 Accepts]: Start accepts. Automaton has 10289 states and 30970 transitions. Word has length 39 [2021-06-05 22:38:31,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:31,739 INFO L482 AbstractCegarLoop]: Abstraction has 10289 states and 30970 transitions. [2021-06-05 22:38:31,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:31,739 INFO L276 IsEmpty]: Start isEmpty. Operand 10289 states and 30970 transitions. [2021-06-05 22:38:31,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:31,751 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:31,751 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:31,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 22:38:31,751 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:31,752 INFO L82 PathProgramCache]: Analyzing trace with hash -12539988, now seen corresponding path program 31 times [2021-06-05 22:38:31,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:31,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425350371] [2021-06-05 22:38:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:31,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:31,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425350371] [2021-06-05 22:38:31,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425350371] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:31,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:31,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:38:31,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379092283] [2021-06-05 22:38:31,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:38:31,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:31,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:38:31,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:38:31,815 INFO L87 Difference]: Start difference. First operand 10289 states and 30970 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:32,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:32,203 INFO L93 Difference]: Finished difference Result 14404 states and 42007 transitions. [2021-06-05 22:38:32,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:38:32,204 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:32,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:32,233 INFO L225 Difference]: With dead ends: 14404 [2021-06-05 22:38:32,233 INFO L226 Difference]: Without dead ends: 13806 [2021-06-05 22:38:32,233 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 75.9ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:38:32,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13806 states. [2021-06-05 22:38:32,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13806 to 9515. [2021-06-05 22:38:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9515 states, 9514 states have (on average 2.974248475930208) internal successors, (28297), 9514 states have internal predecessors, (28297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9515 states to 9515 states and 28297 transitions. [2021-06-05 22:38:32,441 INFO L78 Accepts]: Start accepts. Automaton has 9515 states and 28297 transitions. Word has length 39 [2021-06-05 22:38:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:32,441 INFO L482 AbstractCegarLoop]: Abstraction has 9515 states and 28297 transitions. [2021-06-05 22:38:32,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 9515 states and 28297 transitions. [2021-06-05 22:38:32,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:32,455 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:32,455 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:32,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 22:38:32,456 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:32,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:32,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1602526426, now seen corresponding path program 32 times [2021-06-05 22:38:32,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:32,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774975634] [2021-06-05 22:38:32,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:32,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:32,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:32,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774975634] [2021-06-05 22:38:32,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774975634] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:32,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:32,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:38:32,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014239387] [2021-06-05 22:38:32,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:38:32,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:32,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:38:32,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:38:32,511 INFO L87 Difference]: Start difference. First operand 9515 states and 28297 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:32,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:32,793 INFO L93 Difference]: Finished difference Result 14734 states and 43845 transitions. [2021-06-05 22:38:32,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 22:38:32,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:32,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:32,815 INFO L225 Difference]: With dead ends: 14734 [2021-06-05 22:38:32,815 INFO L226 Difference]: Without dead ends: 14686 [2021-06-05 22:38:32,815 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:38:32,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14686 states. [2021-06-05 22:38:32,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14686 to 9376. [2021-06-05 22:38:32,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9376 states, 9375 states have (on average 2.9634133333333335) internal successors, (27782), 9375 states have internal predecessors, (27782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 27782 transitions. [2021-06-05 22:38:32,967 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 27782 transitions. Word has length 39 [2021-06-05 22:38:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:32,968 INFO L482 AbstractCegarLoop]: Abstraction has 9376 states and 27782 transitions. [2021-06-05 22:38:32,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 27782 transitions. [2021-06-05 22:38:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:32,979 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:32,980 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:32,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 22:38:32,980 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:32,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1091541798, now seen corresponding path program 33 times [2021-06-05 22:38:32,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:32,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336254882] [2021-06-05 22:38:32,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:33,020 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:33,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336254882] [2021-06-05 22:38:33,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336254882] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:33,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:33,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:38:33,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675987018] [2021-06-05 22:38:33,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:38:33,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:33,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:38:33,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:38:33,021 INFO L87 Difference]: Start difference. First operand 9376 states and 27782 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:33,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:33,317 INFO L93 Difference]: Finished difference Result 14599 states and 43322 transitions. [2021-06-05 22:38:33,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 22:38:33,317 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:33,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:33,337 INFO L225 Difference]: With dead ends: 14599 [2021-06-05 22:38:33,338 INFO L226 Difference]: Without dead ends: 14479 [2021-06-05 22:38:33,338 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 54.8ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-05 22:38:33,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2021-06-05 22:38:33,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 9268. [2021-06-05 22:38:33,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9268 states, 9267 states have (on average 2.9584547318441783) internal successors, (27416), 9267 states have internal predecessors, (27416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 27416 transitions. [2021-06-05 22:38:33,494 INFO L78 Accepts]: Start accepts. Automaton has 9268 states and 27416 transitions. Word has length 39 [2021-06-05 22:38:33,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:33,494 INFO L482 AbstractCegarLoop]: Abstraction has 9268 states and 27416 transitions. [2021-06-05 22:38:33,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:33,494 INFO L276 IsEmpty]: Start isEmpty. Operand 9268 states and 27416 transitions. [2021-06-05 22:38:33,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:33,506 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:33,506 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:33,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 22:38:33,506 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:33,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:33,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1524483064, now seen corresponding path program 34 times [2021-06-05 22:38:33,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:33,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304242463] [2021-06-05 22:38:33,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:33,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:33,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304242463] [2021-06-05 22:38:33,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304242463] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:33,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:33,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:38:33,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808770029] [2021-06-05 22:38:33,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:38:33,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:33,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:38:33,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:38:33,562 INFO L87 Difference]: Start difference. First operand 9268 states and 27416 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:34,003 INFO L93 Difference]: Finished difference Result 14208 states and 42268 transitions. [2021-06-05 22:38:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:38:34,004 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:34,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:34,030 INFO L225 Difference]: With dead ends: 14208 [2021-06-05 22:38:34,030 INFO L226 Difference]: Without dead ends: 14016 [2021-06-05 22:38:34,031 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 75.8ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:38:34,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14016 states. [2021-06-05 22:38:34,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14016 to 9164. [2021-06-05 22:38:34,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9164 states, 9163 states have (on average 2.960820691913129) internal successors, (27130), 9163 states have internal predecessors, (27130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 27130 transitions. [2021-06-05 22:38:34,182 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 27130 transitions. Word has length 39 [2021-06-05 22:38:34,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:34,182 INFO L482 AbstractCegarLoop]: Abstraction has 9164 states and 27130 transitions. [2021-06-05 22:38:34,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:34,182 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 27130 transitions. [2021-06-05 22:38:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:34,193 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:34,194 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:34,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 22:38:34,194 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:34,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:34,194 INFO L82 PathProgramCache]: Analyzing trace with hash 121958780, now seen corresponding path program 35 times [2021-06-05 22:38:34,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:34,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855857363] [2021-06-05 22:38:34,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:34,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:34,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855857363] [2021-06-05 22:38:34,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855857363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:34,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:34,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 22:38:34,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323200384] [2021-06-05 22:38:34,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 22:38:34,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:34,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 22:38:34,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:38:34,256 INFO L87 Difference]: Start difference. First operand 9164 states and 27130 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:34,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:34,701 INFO L93 Difference]: Finished difference Result 14134 states and 42012 transitions. [2021-06-05 22:38:34,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 22:38:34,701 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:34,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:34,721 INFO L225 Difference]: With dead ends: 14134 [2021-06-05 22:38:34,722 INFO L226 Difference]: Without dead ends: 13966 [2021-06-05 22:38:34,722 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 118.0ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-05 22:38:34,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13966 states. [2021-06-05 22:38:34,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13966 to 9158. [2021-06-05 22:38:34,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9158 states, 9157 states have (on average 2.9588293109096866) internal successors, (27094), 9157 states have internal predecessors, (27094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:34,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9158 states to 9158 states and 27094 transitions. [2021-06-05 22:38:34,863 INFO L78 Accepts]: Start accepts. Automaton has 9158 states and 27094 transitions. Word has length 39 [2021-06-05 22:38:34,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:34,863 INFO L482 AbstractCegarLoop]: Abstraction has 9158 states and 27094 transitions. [2021-06-05 22:38:34,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:34,864 INFO L276 IsEmpty]: Start isEmpty. Operand 9158 states and 27094 transitions. [2021-06-05 22:38:34,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:34,874 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:34,875 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:34,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 22:38:34,875 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:34,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:34,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1643590330, now seen corresponding path program 36 times [2021-06-05 22:38:34,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:34,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486926670] [2021-06-05 22:38:34,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:34,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:34,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:34,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486926670] [2021-06-05 22:38:34,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486926670] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:34,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:34,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:38:34,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304187653] [2021-06-05 22:38:34,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:38:34,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:34,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:38:34,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:38:34,919 INFO L87 Difference]: Start difference. First operand 9158 states and 27094 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:35,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:35,141 INFO L93 Difference]: Finished difference Result 14594 states and 43056 transitions. [2021-06-05 22:38:35,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 22:38:35,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:35,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:35,162 INFO L225 Difference]: With dead ends: 14594 [2021-06-05 22:38:35,162 INFO L226 Difference]: Without dead ends: 14466 [2021-06-05 22:38:35,162 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:38:35,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14466 states. [2021-06-05 22:38:35,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14466 to 9094. [2021-06-05 22:38:35,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9094 states, 9093 states have (on average 2.9493016606180578) internal successors, (26818), 9093 states have internal predecessors, (26818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:35,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9094 states to 9094 states and 26818 transitions. [2021-06-05 22:38:35,299 INFO L78 Accepts]: Start accepts. Automaton has 9094 states and 26818 transitions. Word has length 39 [2021-06-05 22:38:35,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:35,300 INFO L482 AbstractCegarLoop]: Abstraction has 9094 states and 26818 transitions. [2021-06-05 22:38:35,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:35,300 INFO L276 IsEmpty]: Start isEmpty. Operand 9094 states and 26818 transitions. [2021-06-05 22:38:35,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:35,310 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:35,310 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:35,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 22:38:35,311 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:35,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:35,311 INFO L82 PathProgramCache]: Analyzing trace with hash -245711174, now seen corresponding path program 37 times [2021-06-05 22:38:35,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:35,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517025041] [2021-06-05 22:38:35,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:35,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:35,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517025041] [2021-06-05 22:38:35,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517025041] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:35,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:35,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:38:35,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985578843] [2021-06-05 22:38:35,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:38:35,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:35,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:38:35,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:38:35,362 INFO L87 Difference]: Start difference. First operand 9094 states and 26818 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:35,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:35,717 INFO L93 Difference]: Finished difference Result 14494 states and 42702 transitions. [2021-06-05 22:38:35,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 22:38:35,717 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:35,744 INFO L225 Difference]: With dead ends: 14494 [2021-06-05 22:38:35,744 INFO L226 Difference]: Without dead ends: 14022 [2021-06-05 22:38:35,745 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 59.0ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-05 22:38:35,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14022 states. [2021-06-05 22:38:35,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14022 to 8890. [2021-06-05 22:38:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8890 states, 8889 states have (on average 2.937338283271459) internal successors, (26110), 8889 states have internal predecessors, (26110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:35,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8890 states to 8890 states and 26110 transitions. [2021-06-05 22:38:35,933 INFO L78 Accepts]: Start accepts. Automaton has 8890 states and 26110 transitions. Word has length 39 [2021-06-05 22:38:35,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:35,933 INFO L482 AbstractCegarLoop]: Abstraction has 8890 states and 26110 transitions. [2021-06-05 22:38:35,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:35,933 INFO L276 IsEmpty]: Start isEmpty. Operand 8890 states and 26110 transitions. [2021-06-05 22:38:35,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:35,944 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:35,944 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:35,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 22:38:35,944 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:35,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:35,944 INFO L82 PathProgramCache]: Analyzing trace with hash -992696872, now seen corresponding path program 38 times [2021-06-05 22:38:35,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:35,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836840729] [2021-06-05 22:38:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:35,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:35,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836840729] [2021-06-05 22:38:35,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836840729] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:35,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:35,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:38:35,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106189247] [2021-06-05 22:38:35,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:38:35,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:35,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:38:35,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:38:35,995 INFO L87 Difference]: Start difference. First operand 8890 states and 26110 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:36,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:36,330 INFO L93 Difference]: Finished difference Result 14086 states and 41514 transitions. [2021-06-05 22:38:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:38:36,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:36,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:36,350 INFO L225 Difference]: With dead ends: 14086 [2021-06-05 22:38:36,350 INFO L226 Difference]: Without dead ends: 13386 [2021-06-05 22:38:36,351 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 76.5ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:38:36,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13386 states. [2021-06-05 22:38:36,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13386 to 8674. [2021-06-05 22:38:36,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8674 states, 8673 states have (on average 2.945462930935086) internal successors, (25546), 8673 states have internal predecessors, (25546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 25546 transitions. [2021-06-05 22:38:36,485 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 25546 transitions. Word has length 39 [2021-06-05 22:38:36,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:36,485 INFO L482 AbstractCegarLoop]: Abstraction has 8674 states and 25546 transitions. [2021-06-05 22:38:36,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:36,486 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 25546 transitions. [2021-06-05 22:38:36,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:36,495 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:36,496 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:36,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 22:38:36,496 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:36,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:36,496 INFO L82 PathProgramCache]: Analyzing trace with hash 2135186268, now seen corresponding path program 39 times [2021-06-05 22:38:36,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:36,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339073329] [2021-06-05 22:38:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:36,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:36,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339073329] [2021-06-05 22:38:36,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339073329] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:36,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:36,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 22:38:36,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395667607] [2021-06-05 22:38:36,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 22:38:36,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:36,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 22:38:36,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:38:36,556 INFO L87 Difference]: Start difference. First operand 8674 states and 25546 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:36,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:36,966 INFO L93 Difference]: Finished difference Result 13828 states and 40806 transitions. [2021-06-05 22:38:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 22:38:36,967 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:36,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:36,987 INFO L225 Difference]: With dead ends: 13828 [2021-06-05 22:38:36,987 INFO L226 Difference]: Without dead ends: 13182 [2021-06-05 22:38:36,988 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-05 22:38:37,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13182 states. [2021-06-05 22:38:37,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13182 to 8470. [2021-06-05 22:38:37,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8470 states, 8469 states have (on average 2.964694769158106) internal successors, (25108), 8469 states have internal predecessors, (25108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 25108 transitions. [2021-06-05 22:38:37,134 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 25108 transitions. Word has length 39 [2021-06-05 22:38:37,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:37,134 INFO L482 AbstractCegarLoop]: Abstraction has 8470 states and 25108 transitions. [2021-06-05 22:38:37,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:37,134 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 25108 transitions. [2021-06-05 22:38:37,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:37,144 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:37,144 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:37,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 22:38:37,144 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:37,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:37,145 INFO L82 PathProgramCache]: Analyzing trace with hash -695140544, now seen corresponding path program 40 times [2021-06-05 22:38:37,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:37,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134753860] [2021-06-05 22:38:37,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:37,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:37,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134753860] [2021-06-05 22:38:37,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134753860] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:37,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:37,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 22:38:37,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018347598] [2021-06-05 22:38:37,203 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 22:38:37,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:37,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 22:38:37,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:38:37,204 INFO L87 Difference]: Start difference. First operand 8470 states and 25108 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:37,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:37,641 INFO L93 Difference]: Finished difference Result 13371 states and 39611 transitions. [2021-06-05 22:38:37,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 22:38:37,642 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:37,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:37,663 INFO L225 Difference]: With dead ends: 13371 [2021-06-05 22:38:37,663 INFO L226 Difference]: Without dead ends: 12735 [2021-06-05 22:38:37,664 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 109.9ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-05 22:38:37,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12735 states. [2021-06-05 22:38:37,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12735 to 7590. [2021-06-05 22:38:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7590 states, 7589 states have (on average 2.960469100013177) internal successors, (22467), 7589 states have internal predecessors, (22467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:37,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7590 states to 7590 states and 22467 transitions. [2021-06-05 22:38:37,785 INFO L78 Accepts]: Start accepts. Automaton has 7590 states and 22467 transitions. Word has length 39 [2021-06-05 22:38:37,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:37,785 INFO L482 AbstractCegarLoop]: Abstraction has 7590 states and 22467 transitions. [2021-06-05 22:38:37,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:37,785 INFO L276 IsEmpty]: Start isEmpty. Operand 7590 states and 22467 transitions. [2021-06-05 22:38:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:37,794 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:37,794 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:37,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 22:38:37,794 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:37,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:37,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1794340302, now seen corresponding path program 41 times [2021-06-05 22:38:37,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:37,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395515954] [2021-06-05 22:38:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:37,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:37,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395515954] [2021-06-05 22:38:37,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395515954] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:37,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:37,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 22:38:37,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137429408] [2021-06-05 22:38:37,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 22:38:37,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:37,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 22:38:37,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-06-05 22:38:37,837 INFO L87 Difference]: Start difference. First operand 7590 states and 22467 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:38,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:38,123 INFO L93 Difference]: Finished difference Result 12745 states and 37674 transitions. [2021-06-05 22:38:38,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 22:38:38,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:38,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:38,142 INFO L225 Difference]: With dead ends: 12745 [2021-06-05 22:38:38,142 INFO L226 Difference]: Without dead ends: 12601 [2021-06-05 22:38:38,143 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-06-05 22:38:38,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-06-05 22:38:38,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 7346. [2021-06-05 22:38:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7346 states, 7345 states have (on average 2.9400953029271615) internal successors, (21595), 7345 states have internal predecessors, (21595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 21595 transitions. [2021-06-05 22:38:38,264 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 21595 transitions. Word has length 39 [2021-06-05 22:38:38,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:38,264 INFO L482 AbstractCegarLoop]: Abstraction has 7346 states and 21595 transitions. [2021-06-05 22:38:38,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:38,264 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 21595 transitions. [2021-06-05 22:38:38,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:38,272 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:38,272 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:38,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 22:38:38,272 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:38,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:38,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1613437490, now seen corresponding path program 42 times [2021-06-05 22:38:38,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:38,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842387398] [2021-06-05 22:38:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:38,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:38,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842387398] [2021-06-05 22:38:38,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842387398] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:38,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:38,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:38:38,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293192831] [2021-06-05 22:38:38,332 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:38:38,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:38,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:38:38,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:38:38,332 INFO L87 Difference]: Start difference. First operand 7346 states and 21595 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:38,645 INFO L93 Difference]: Finished difference Result 11821 states and 34814 transitions. [2021-06-05 22:38:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:38:38,645 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:38,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:38,660 INFO L225 Difference]: With dead ends: 11821 [2021-06-05 22:38:38,660 INFO L226 Difference]: Without dead ends: 11629 [2021-06-05 22:38:38,660 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 76.8ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:38:38,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11629 states. [2021-06-05 22:38:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11629 to 7242. [2021-06-05 22:38:38,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7242 states, 7241 states have (on average 2.9428255765778206) internal successors, (21309), 7241 states have internal predecessors, (21309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:38,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 21309 transitions. [2021-06-05 22:38:38,773 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 21309 transitions. Word has length 39 [2021-06-05 22:38:38,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:38,773 INFO L482 AbstractCegarLoop]: Abstraction has 7242 states and 21309 transitions. [2021-06-05 22:38:38,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:38,773 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 21309 transitions. [2021-06-05 22:38:38,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:38,782 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:38,782 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:38,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 22:38:38,782 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:38,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:38,782 INFO L82 PathProgramCache]: Analyzing trace with hash -798629012, now seen corresponding path program 43 times [2021-06-05 22:38:38,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:38,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464732497] [2021-06-05 22:38:38,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:38,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:38,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464732497] [2021-06-05 22:38:38,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464732497] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:38,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:38,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 22:38:38,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413347407] [2021-06-05 22:38:38,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 22:38:38,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:38,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 22:38:38,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:38:38,836 INFO L87 Difference]: Start difference. First operand 7242 states and 21309 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:39,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:39,233 INFO L93 Difference]: Finished difference Result 11315 states and 33296 transitions. [2021-06-05 22:38:39,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 22:38:39,234 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:39,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:39,254 INFO L225 Difference]: With dead ends: 11315 [2021-06-05 22:38:39,255 INFO L226 Difference]: Without dead ends: 11099 [2021-06-05 22:38:39,255 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 101.3ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-06-05 22:38:39,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2021-06-05 22:38:39,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 7008. [2021-06-05 22:38:39,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7008 states, 7007 states have (on average 2.97445411731126) internal successors, (20842), 7007 states have internal predecessors, (20842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:39,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7008 states to 7008 states and 20842 transitions. [2021-06-05 22:38:39,408 INFO L78 Accepts]: Start accepts. Automaton has 7008 states and 20842 transitions. Word has length 39 [2021-06-05 22:38:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:39,410 INFO L482 AbstractCegarLoop]: Abstraction has 7008 states and 20842 transitions. [2021-06-05 22:38:39,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:39,410 INFO L276 IsEmpty]: Start isEmpty. Operand 7008 states and 20842 transitions. [2021-06-05 22:38:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:39,422 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:39,422 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:39,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 22:38:39,422 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:39,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:39,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1518942532, now seen corresponding path program 44 times [2021-06-05 22:38:39,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:39,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604904806] [2021-06-05 22:38:39,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:39,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:39,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:39,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604904806] [2021-06-05 22:38:39,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604904806] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:39,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:39,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 22:38:39,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299540378] [2021-06-05 22:38:39,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 22:38:39,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:39,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 22:38:39,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-06-05 22:38:39,459 INFO L87 Difference]: Start difference. First operand 7008 states and 20842 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:39,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:39,573 INFO L93 Difference]: Finished difference Result 9444 states and 26929 transitions. [2021-06-05 22:38:39,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 22:38:39,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:39,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:39,588 INFO L225 Difference]: With dead ends: 9444 [2021-06-05 22:38:39,588 INFO L226 Difference]: Without dead ends: 8824 [2021-06-05 22:38:39,589 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.3ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-06-05 22:38:39,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8824 states. [2021-06-05 22:38:39,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8824 to 4125. [2021-06-05 22:38:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4125 states, 4124 states have (on average 2.908341416100873) internal successors, (11994), 4124 states have internal predecessors, (11994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:39,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 11994 transitions. [2021-06-05 22:38:39,672 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 11994 transitions. Word has length 39 [2021-06-05 22:38:39,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:39,672 INFO L482 AbstractCegarLoop]: Abstraction has 4125 states and 11994 transitions. [2021-06-05 22:38:39,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:39,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 11994 transitions. [2021-06-05 22:38:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:39,677 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:39,677 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:39,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 22:38:39,677 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:39,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:39,678 INFO L82 PathProgramCache]: Analyzing trace with hash -236999486, now seen corresponding path program 45 times [2021-06-05 22:38:39,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:39,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754519522] [2021-06-05 22:38:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:39,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:39,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754519522] [2021-06-05 22:38:39,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754519522] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:39,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:39,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 22:38:39,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786733307] [2021-06-05 22:38:39,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 22:38:39,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:39,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 22:38:39,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 22:38:39,713 INFO L87 Difference]: Start difference. First operand 4125 states and 11994 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:39,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:39,861 INFO L93 Difference]: Finished difference Result 6107 states and 16719 transitions. [2021-06-05 22:38:39,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 22:38:39,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:39,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:39,867 INFO L225 Difference]: With dead ends: 6107 [2021-06-05 22:38:39,867 INFO L226 Difference]: Without dead ends: 4693 [2021-06-05 22:38:39,867 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 36.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:38:39,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2021-06-05 22:38:39,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 2542. [2021-06-05 22:38:39,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2541 states have (on average 2.786698150334514) internal successors, (7081), 2541 states have internal predecessors, (7081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 7081 transitions. [2021-06-05 22:38:39,899 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 7081 transitions. Word has length 39 [2021-06-05 22:38:39,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:39,899 INFO L482 AbstractCegarLoop]: Abstraction has 2542 states and 7081 transitions. [2021-06-05 22:38:39,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:39,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 7081 transitions. [2021-06-05 22:38:39,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:39,902 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:39,902 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:39,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-05 22:38:39,902 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:39,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:39,902 INFO L82 PathProgramCache]: Analyzing trace with hash -634778652, now seen corresponding path program 46 times [2021-06-05 22:38:39,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:39,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761373286] [2021-06-05 22:38:39,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:39,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:39,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761373286] [2021-06-05 22:38:39,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761373286] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:39,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:39,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-05 22:38:39,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36224790] [2021-06-05 22:38:39,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 22:38:39,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:39,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 22:38:39,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-06-05 22:38:39,956 INFO L87 Difference]: Start difference. First operand 2542 states and 7081 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:40,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:40,184 INFO L93 Difference]: Finished difference Result 1862 states and 4307 transitions. [2021-06-05 22:38:40,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 22:38:40,185 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:40,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:40,186 INFO L225 Difference]: With dead ends: 1862 [2021-06-05 22:38:40,186 INFO L226 Difference]: Without dead ends: 648 [2021-06-05 22:38:40,186 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 74.3ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-06-05 22:38:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-06-05 22:38:40,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 456. [2021-06-05 22:38:40,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 2.4329670329670328) internal successors, (1107), 455 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:40,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1107 transitions. [2021-06-05 22:38:40,193 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1107 transitions. Word has length 39 [2021-06-05 22:38:40,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:40,193 INFO L482 AbstractCegarLoop]: Abstraction has 456 states and 1107 transitions. [2021-06-05 22:38:40,193 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:40,193 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1107 transitions. [2021-06-05 22:38:40,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-06-05 22:38:40,193 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 22:38:40,194 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 22:38:40,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-05 22:38:40,194 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-05 22:38:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 22:38:40,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1819342244, now seen corresponding path program 47 times [2021-06-05 22:38:40,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 22:38:40,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335974770] [2021-06-05 22:38:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 22:38:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 22:38:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 22:38:40,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 22:38:40,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335974770] [2021-06-05 22:38:40,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335974770] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 22:38:40,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 22:38:40,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-05 22:38:40,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302798690] [2021-06-05 22:38:40,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 22:38:40,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 22:38:40,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 22:38:40,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 22:38:40,258 INFO L87 Difference]: Start difference. First operand 456 states and 1107 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:40,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 22:38:40,423 INFO L93 Difference]: Finished difference Result 391 states and 811 transitions. [2021-06-05 22:38:40,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 22:38:40,424 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-06-05 22:38:40,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 22:38:40,424 INFO L225 Difference]: With dead ends: 391 [2021-06-05 22:38:40,424 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 22:38:40,424 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 87.2ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-06-05 22:38:40,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 22:38:40,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 22:38:40,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:40,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 22:38:40,424 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-06-05 22:38:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 22:38:40,425 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 22:38:40,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 22:38:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 22:38:40,425 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 22:38:40,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-05 22:38:40,428 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 22:38:40,430 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 10:38:40 BasicIcfg [2021-06-05 22:38:40,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 22:38:40,430 INFO L168 Benchmark]: Toolchain (without parser) took 46008.99 ms. Allocated memory was 354.4 MB in the beginning and 14.4 GB in the end (delta: 14.1 GB). Free memory was 334.5 MB in the beginning and 10.5 GB in the end (delta: -10.2 GB). Peak memory consumption was 3.9 GB. Max. memory is 16.0 GB. [2021-06-05 22:38:40,430 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 354.4 MB. Free memory is still 335.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 22:38:40,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.31 ms. Allocated memory is still 354.4 MB. Free memory was 334.4 MB in the beginning and 333.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 22:38:40,431 INFO L168 Benchmark]: Boogie Preprocessor took 12.37 ms. Allocated memory is still 354.4 MB. Free memory was 333.0 MB in the beginning and 332.0 MB in the end (delta: 976.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 22:38:40,431 INFO L168 Benchmark]: RCFGBuilder took 311.41 ms. Allocated memory is still 354.4 MB. Free memory was 331.9 MB in the beginning and 316.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-06-05 22:38:40,431 INFO L168 Benchmark]: TraceAbstraction took 45659.08 ms. Allocated memory was 354.4 MB in the beginning and 14.4 GB in the end (delta: 14.1 GB). Free memory was 316.3 MB in the beginning and 10.5 GB in the end (delta: -10.2 GB). Peak memory consumption was 3.9 GB. Max. memory is 16.0 GB. [2021-06-05 22:38:40,431 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 0.13 ms. Allocated memory is still 354.4 MB. Free memory is still 335.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.31 ms. Allocated memory is still 354.4 MB. Free memory was 334.4 MB in the beginning and 333.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.37 ms. Allocated memory is still 354.4 MB. Free memory was 333.0 MB in the beginning and 332.0 MB in the end (delta: 976.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 311.41 ms. Allocated memory is still 354.4 MB. Free memory was 331.9 MB in the beginning and 316.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 45659.08 ms. Allocated memory was 354.4 MB in the beginning and 14.4 GB in the end (delta: 14.1 GB). Free memory was 316.3 MB in the beginning and 10.5 GB in the end (delta: -10.2 GB). Peak memory consumption was 3.9 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 11 procedures, 83 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 45551.5ms, OverallIterations: 47, TraceHistogramMax: 1, EmptinessCheckTime: 1324.2ms, AutomataDifference: 19708.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1636.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3516 SDtfs, 5072 SDslu, 12592 SDs, 0 SdLazy, 13314 SolverSat, 2088 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6663.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 574 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 449 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 2679.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24666occurred in iteration=11, InterpolantAutomatonStates: 453, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19770.2ms AutomataMinimizationTime, 47 MinimizatonAttempts, 380099 StatesRemovedByMinimization, 44 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 59.6ms SsaConstructionTime, 246.5ms SatisfiabilityAnalysisTime, 2476.1ms InterpolantComputationTime, 1833 NumberOfCodeBlocks, 1833 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 1786 ConstructedInterpolants, 0 QuantifiedInterpolants, 5196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 47 InterpolantComputations, 47 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...