/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 19:02:45,122 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 19:02:45,185 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-29 19:02:45,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 19:02:45,208 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 19:02:45,208 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 19:02:45,209 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 19:02:45,209 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 19:02:45,209 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 19:02:45,212 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 19:02:45,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 19:02:45,212 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 19:02:45,213 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 19:02:45,213 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 19:02:45,214 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 19:02:45,214 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 19:02:45,214 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 19:02:45,214 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 19:02:45,214 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 19:02:45,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 19:02:45,214 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 19:02:45,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 19:02:45,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 19:02:45,215 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 19:02:45,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 19:02:45,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:02:45,216 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 19:02:45,216 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 19:02:45,216 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 19:02:45,217 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 19:02:45,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 19:02:45,217 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 19:02:45,217 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 19:02:45,217 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 19:02:45,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 19:02:45,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 19:02:45,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 19:02:45,410 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 19:02:45,410 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 19:02:45,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2023-11-29 19:02:46,330 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 19:02:46,504 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 19:02:46,504 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2023-11-29 19:02:46,522 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a0ee44a7/98a522c6599649b3876fb44af2bd8bf4/FLAG1686100ca [2023-11-29 19:02:46,533 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a0ee44a7/98a522c6599649b3876fb44af2bd8bf4 [2023-11-29 19:02:46,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 19:02:46,535 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 19:02:46,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 19:02:46,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 19:02:46,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 19:02:46,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:02:46" (1/1) ... [2023-11-29 19:02:46,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b351435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46, skipping insertion in model container [2023-11-29 19:02:46,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:02:46" (1/1) ... [2023-11-29 19:02:46,583 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 19:02:46,760 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2023-11-29 19:02:46,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:02:46,769 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 19:02:46,821 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2023-11-29 19:02:46,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:02:46,845 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 19:02:46,845 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 19:02:46,850 INFO L206 MainTranslator]: Completed translation [2023-11-29 19:02:46,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46 WrapperNode [2023-11-29 19:02:46,850 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 19:02:46,851 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 19:02:46,851 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 19:02:46,852 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 19:02:46,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 19:02:46,872 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 19:02:46,886 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2023-11-29 19:02:46,886 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 19:02:46,886 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 19:02:46,887 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 19:02:46,887 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 19:02:46,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 19:02:46,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 19:02:46,896 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 19:02:46,896 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 19:02:46,910 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 19:02:46,911 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 19:02:46,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 19:02:46,913 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 19:02:46,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 19:02:46,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 19:02:46,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 19:02:46,919 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 19:02:46,920 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (1/1) ... [2023-11-29 19:02:46,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:02:46,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:02:46,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-29 19:02:46,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-29 19:02:46,961 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-29 19:02:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-29 19:02:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-29 19:02:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-29 19:02:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 19:02:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 19:02:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 19:02:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 19:02:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 19:02:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 19:02:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 19:02:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 19:02:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 19:02:46,964 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 19:02:47,039 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 19:02:47,040 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 19:02:47,154 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 19:02:47,160 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 19:02:47,160 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 19:02:47,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:02:47 BoogieIcfgContainer [2023-11-29 19:02:47,161 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 19:02:47,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 19:02:47,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 19:02:47,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 19:02:47,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:02:46" (1/3) ... [2023-11-29 19:02:47,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1ceaf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:02:47, skipping insertion in model container [2023-11-29 19:02:47,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:02:46" (2/3) ... [2023-11-29 19:02:47,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1ceaf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:02:47, skipping insertion in model container [2023-11-29 19:02:47,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:02:47" (3/3) ... [2023-11-29 19:02:47,167 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2023-11-29 19:02:47,177 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 19:02:47,178 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 19:02:47,178 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 19:02:47,223 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:02:47,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 68 transitions, 144 flow [2023-11-29 19:02:47,269 INFO L124 PetriNetUnfolderBase]: 5/66 cut-off events. [2023-11-29 19:02:47,269 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:02:47,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 5/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-29 19:02:47,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 68 transitions, 144 flow [2023-11-29 19:02:47,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 66 transitions, 138 flow [2023-11-29 19:02:47,284 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:02:47,288 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@637bdd07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:02:47,288 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 19:02:47,300 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:02:47,300 INFO L124 PetriNetUnfolderBase]: 4/54 cut-off events. [2023-11-29 19:02:47,300 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:02:47,300 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:02:47,301 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:02:47,301 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:02:47,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:02:47,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1937643587, now seen corresponding path program 1 times [2023-11-29 19:02:47,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:02:47,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740782668] [2023-11-29 19:02:47,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:02:47,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:02:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:02:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:02:47,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:02:47,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740782668] [2023-11-29 19:02:47,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740782668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:02:47,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:02:47,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 19:02:47,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294441512] [2023-11-29 19:02:47,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:02:47,787 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 19:02:47,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:02:47,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 19:02:47,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 19:02:47,821 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:02:47,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:47,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:02:47,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:02:47,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:02:47,944 INFO L124 PetriNetUnfolderBase]: 60/301 cut-off events. [2023-11-29 19:02:47,944 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 19:02:47,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 301 events. 60/301 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1409 event pairs, 2 based on Foata normal form. 62/334 useless extension candidates. Maximal degree in co-relation 378. Up to 32 conditions per place. [2023-11-29 19:02:47,947 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 14 selfloop transitions, 6 changer transitions 23/85 dead transitions. [2023-11-29 19:02:47,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 85 transitions, 246 flow [2023-11-29 19:02:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 19:02:47,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 19:02:47,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 470 transitions. [2023-11-29 19:02:47,964 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8639705882352942 [2023-11-29 19:02:47,964 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 470 transitions. [2023-11-29 19:02:47,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 470 transitions. [2023-11-29 19:02:47,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:02:47,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 470 transitions. [2023-11-29 19:02:47,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.75) internal successors, (470), 8 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:47,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:47,977 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:47,981 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 6 predicate places. [2023-11-29 19:02:47,981 INFO L500 AbstractCegarLoop]: Abstraction has has 74 places, 85 transitions, 246 flow [2023-11-29 19:02:47,981 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:47,982 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:02:47,982 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:02:47,982 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 19:02:47,982 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:02:47,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:02:47,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1498210311, now seen corresponding path program 1 times [2023-11-29 19:02:47,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:02:47,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622963332] [2023-11-29 19:02:47,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:02:47,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:02:48,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:02:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:02:48,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:02:48,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622963332] [2023-11-29 19:02:48,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622963332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:02:48,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:02:48,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 19:02:48,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673631245] [2023-11-29 19:02:48,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:02:48,133 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 19:02:48,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:02:48,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 19:02:48,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 19:02:48,134 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:02:48,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 85 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 53.5) internal successors, (321), 6 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:02:48,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:02:48,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:02:48,278 INFO L124 PetriNetUnfolderBase]: 84/382 cut-off events. [2023-11-29 19:02:48,278 INFO L125 PetriNetUnfolderBase]: For 59/115 co-relation queries the response was YES. [2023-11-29 19:02:48,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 382 events. 84/382 cut-off events. For 59/115 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1973 event pairs, 0 based on Foata normal form. 19/369 useless extension candidates. Maximal degree in co-relation 624. Up to 61 conditions per place. [2023-11-29 19:02:48,284 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 28 selfloop transitions, 11 changer transitions 65/146 dead transitions. [2023-11-29 19:02:48,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 146 transitions, 685 flow [2023-11-29 19:02:48,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 19:02:48,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 19:02:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 568 transitions. [2023-11-29 19:02:48,286 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8352941176470589 [2023-11-29 19:02:48,286 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 568 transitions. [2023-11-29 19:02:48,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 568 transitions. [2023-11-29 19:02:48,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:02:48,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 568 transitions. [2023-11-29 19:02:48,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 56.8) internal successors, (568), 10 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 68.0) internal successors, (748), 11 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,289 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 68.0) internal successors, (748), 11 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,290 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2023-11-29 19:02:48,290 INFO L500 AbstractCegarLoop]: Abstraction has has 83 places, 146 transitions, 685 flow [2023-11-29 19:02:48,290 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.5) internal successors, (321), 6 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,290 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:02:48,290 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:02:48,291 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 19:02:48,291 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:02:48,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:02:48,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2002865279, now seen corresponding path program 2 times [2023-11-29 19:02:48,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:02:48,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773141401] [2023-11-29 19:02:48,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:02:48,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:02:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:02:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:02:48,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:02:48,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773141401] [2023-11-29 19:02:48,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773141401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:02:48,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:02:48,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 19:02:48,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518695658] [2023-11-29 19:02:48,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:02:48,439 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 19:02:48,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:02:48,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 19:02:48,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 19:02:48,441 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:02:48,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 146 transitions, 685 flow. Second operand has 6 states, 6 states have (on average 53.5) internal successors, (321), 6 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:02:48,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:02:48,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:02:48,567 INFO L124 PetriNetUnfolderBase]: 96/456 cut-off events. [2023-11-29 19:02:48,569 INFO L125 PetriNetUnfolderBase]: For 201/314 co-relation queries the response was YES. [2023-11-29 19:02:48,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 456 events. 96/456 cut-off events. For 201/314 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2616 event pairs, 0 based on Foata normal form. 41/463 useless extension candidates. Maximal degree in co-relation 880. Up to 77 conditions per place. [2023-11-29 19:02:48,571 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 27 selfloop transitions, 12 changer transitions 95/176 dead transitions. [2023-11-29 19:02:48,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 176 transitions, 1117 flow [2023-11-29 19:02:48,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 19:02:48,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 19:02:48,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 504 transitions. [2023-11-29 19:02:48,573 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8235294117647058 [2023-11-29 19:02:48,573 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 504 transitions. [2023-11-29 19:02:48,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 504 transitions. [2023-11-29 19:02:48,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:02:48,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 504 transitions. [2023-11-29 19:02:48,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 56.0) internal successors, (504), 9 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 68.0) internal successors, (680), 10 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,576 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 68.0) internal successors, (680), 10 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,577 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 23 predicate places. [2023-11-29 19:02:48,577 INFO L500 AbstractCegarLoop]: Abstraction has has 91 places, 176 transitions, 1117 flow [2023-11-29 19:02:48,577 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.5) internal successors, (321), 6 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,577 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:02:48,577 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:02:48,577 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 19:02:48,577 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:02:48,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:02:48,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1956601411, now seen corresponding path program 1 times [2023-11-29 19:02:48,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:02:48,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469871926] [2023-11-29 19:02:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:02:48,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:02:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:02:48,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:02:48,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:02:48,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469871926] [2023-11-29 19:02:48,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469871926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:02:48,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:02:48,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:02:48,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395278868] [2023-11-29 19:02:48,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:02:48,703 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:02:48,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:02:48,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:02:48,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:02:48,705 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:02:48,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 176 transitions, 1117 flow. Second operand has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:02:48,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:02:48,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:02:48,831 INFO L124 PetriNetUnfolderBase]: 122/570 cut-off events. [2023-11-29 19:02:48,831 INFO L125 PetriNetUnfolderBase]: For 492/677 co-relation queries the response was YES. [2023-11-29 19:02:48,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1339 conditions, 570 events. 122/570 cut-off events. For 492/677 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3505 event pairs, 0 based on Foata normal form. 49/575 useless extension candidates. Maximal degree in co-relation 1296. Up to 105 conditions per place. [2023-11-29 19:02:48,833 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 26 selfloop transitions, 21 changer transitions 120/209 dead transitions. [2023-11-29 19:02:48,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 209 transitions, 1699 flow [2023-11-29 19:02:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 19:02:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 19:02:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 733 transitions. [2023-11-29 19:02:48,835 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.829185520361991 [2023-11-29 19:02:48,835 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 733 transitions. [2023-11-29 19:02:48,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 733 transitions. [2023-11-29 19:02:48,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:02:48,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 733 transitions. [2023-11-29 19:02:48,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 56.38461538461539) internal successors, (733), 13 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 68.0) internal successors, (952), 14 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,839 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 68.0) internal successors, (952), 14 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,840 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 35 predicate places. [2023-11-29 19:02:48,840 INFO L500 AbstractCegarLoop]: Abstraction has has 103 places, 209 transitions, 1699 flow [2023-11-29 19:02:48,840 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,840 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:02:48,840 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:02:48,840 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 19:02:48,841 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:02:48,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:02:48,841 INFO L85 PathProgramCache]: Analyzing trace with hash 848435781, now seen corresponding path program 2 times [2023-11-29 19:02:48,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:02:48,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347550890] [2023-11-29 19:02:48,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:02:48,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:02:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:02:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:02:48,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:02:48,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347550890] [2023-11-29 19:02:48,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347550890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:02:48,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:02:48,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:02:48,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110270029] [2023-11-29 19:02:48,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:02:48,930 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:02:48,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:02:48,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:02:48,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:02:48,930 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:02:48,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 209 transitions, 1699 flow. Second operand has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:48,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:02:48,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:02:48,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:02:49,048 INFO L124 PetriNetUnfolderBase]: 124/575 cut-off events. [2023-11-29 19:02:49,048 INFO L125 PetriNetUnfolderBase]: For 833/1065 co-relation queries the response was YES. [2023-11-29 19:02:49,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 575 events. 124/575 cut-off events. For 833/1065 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3564 event pairs, 0 based on Foata normal form. 66/601 useless extension candidates. Maximal degree in co-relation 1501. Up to 104 conditions per place. [2023-11-29 19:02:49,050 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 24 selfloop transitions, 21 changer transitions 137/224 dead transitions. [2023-11-29 19:02:49,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 224 transitions, 2197 flow [2023-11-29 19:02:49,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 19:02:49,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 19:02:49,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 669 transitions. [2023-11-29 19:02:49,052 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8198529411764706 [2023-11-29 19:02:49,052 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 669 transitions. [2023-11-29 19:02:49,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 669 transitions. [2023-11-29 19:02:49,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:02:49,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 669 transitions. [2023-11-29 19:02:49,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 55.75) internal successors, (669), 12 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:49,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 68.0) internal successors, (884), 13 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:49,055 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 68.0) internal successors, (884), 13 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:49,057 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 46 predicate places. [2023-11-29 19:02:49,057 INFO L500 AbstractCegarLoop]: Abstraction has has 114 places, 224 transitions, 2197 flow [2023-11-29 19:02:49,058 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:49,058 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:02:49,058 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:02:49,058 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 19:02:49,058 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:02:49,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:02:49,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1909941691, now seen corresponding path program 3 times [2023-11-29 19:02:49,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:02:49,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405792209] [2023-11-29 19:02:49,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:02:49,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:02:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:02:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:02:49,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:02:49,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405792209] [2023-11-29 19:02:49,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405792209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:02:49,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:02:49,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 19:02:49,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161972447] [2023-11-29 19:02:49,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:02:49,149 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:02:49,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:02:49,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:02:49,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 19:02:49,150 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:02:49,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 224 transitions, 2197 flow. Second operand has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:49,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:02:49,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:02:49,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:02:49,311 INFO L124 PetriNetUnfolderBase]: 135/633 cut-off events. [2023-11-29 19:02:49,312 INFO L125 PetriNetUnfolderBase]: For 1364/1648 co-relation queries the response was YES. [2023-11-29 19:02:49,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 633 events. 135/633 cut-off events. For 1364/1648 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4097 event pairs, 0 based on Foata normal form. 65/654 useless extension candidates. Maximal degree in co-relation 1849. Up to 117 conditions per place. [2023-11-29 19:02:49,315 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 33 selfloop transitions, 17 changer transitions 147/239 dead transitions. [2023-11-29 19:02:49,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 239 transitions, 2755 flow [2023-11-29 19:02:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 19:02:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 19:02:49,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 835 transitions. [2023-11-29 19:02:49,317 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8186274509803921 [2023-11-29 19:02:49,317 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 835 transitions. [2023-11-29 19:02:49,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 835 transitions. [2023-11-29 19:02:49,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:02:49,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 835 transitions. [2023-11-29 19:02:49,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 55.666666666666664) internal successors, (835), 15 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:49,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 68.0) internal successors, (1088), 16 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:49,321 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 68.0) internal successors, (1088), 16 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:49,323 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 60 predicate places. [2023-11-29 19:02:49,324 INFO L500 AbstractCegarLoop]: Abstraction has has 128 places, 239 transitions, 2755 flow [2023-11-29 19:02:49,324 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:49,324 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:02:49,324 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:02:49,324 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 19:02:49,325 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:02:49,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:02:49,325 INFO L85 PathProgramCache]: Analyzing trace with hash 912085672, now seen corresponding path program 1 times [2023-11-29 19:02:49,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:02:49,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451626798] [2023-11-29 19:02:49,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:02:49,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:02:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:02:49,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:02:49,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:02:49,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451626798] [2023-11-29 19:02:49,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451626798] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:02:49,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369630043] [2023-11-29 19:02:49,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:02:49,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:02:49,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:02:49,438 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:02:49,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 19:02:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:02:49,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 19:02:49,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:02:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:02:49,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:02:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:02:49,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369630043] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:02:49,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:02:49,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2023-11-29 19:02:49,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933993928] [2023-11-29 19:02:49,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:02:49,776 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 19:02:49,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:02:49,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 19:02:49,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-29 19:02:49,778 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:02:49,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 239 transitions, 2755 flow. Second operand has 13 states, 13 states have (on average 53.61538461538461) internal successors, (697), 13 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:49,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:02:49,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:02:49,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:02:50,054 INFO L124 PetriNetUnfolderBase]: 215/1066 cut-off events. [2023-11-29 19:02:50,054 INFO L125 PetriNetUnfolderBase]: For 2679/2970 co-relation queries the response was YES. [2023-11-29 19:02:50,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3399 conditions, 1066 events. 215/1066 cut-off events. For 2679/2970 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7488 event pairs, 0 based on Foata normal form. 61/1042 useless extension candidates. Maximal degree in co-relation 3341. Up to 199 conditions per place. [2023-11-29 19:02:50,059 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 34 selfloop transitions, 36 changer transitions 241/353 dead transitions. [2023-11-29 19:02:50,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 353 transitions, 4957 flow [2023-11-29 19:02:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 19:02:50,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 19:02:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1224 transitions. [2023-11-29 19:02:50,061 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2023-11-29 19:02:50,061 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1224 transitions. [2023-11-29 19:02:50,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1224 transitions. [2023-11-29 19:02:50,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:02:50,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1224 transitions. [2023-11-29 19:02:50,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 55.63636363636363) internal successors, (1224), 22 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:50,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 68.0) internal successors, (1564), 23 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:50,066 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 68.0) internal successors, (1564), 23 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:50,066 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 81 predicate places. [2023-11-29 19:02:50,066 INFO L500 AbstractCegarLoop]: Abstraction has has 149 places, 353 transitions, 4957 flow [2023-11-29 19:02:50,067 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 53.61538461538461) internal successors, (697), 13 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:50,067 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:02:50,067 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:02:50,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 19:02:50,271 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:02:50,271 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:02:50,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:02:50,272 INFO L85 PathProgramCache]: Analyzing trace with hash 165067305, now seen corresponding path program 1 times [2023-11-29 19:02:50,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:02:50,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666957984] [2023-11-29 19:02:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:02:50,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:02:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:02:50,420 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:02:50,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:02:50,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666957984] [2023-11-29 19:02:50,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666957984] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:02:50,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319492688] [2023-11-29 19:02:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:02:50,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:02:50,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:02:50,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:02:50,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 19:02:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:02:50,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 19:02:50,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:02:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:02:50,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:02:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:02:50,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319492688] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:02:50,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:02:50,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2023-11-29 19:02:50,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489443044] [2023-11-29 19:02:50,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:02:50,748 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 19:02:50,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:02:50,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 19:02:50,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-11-29 19:02:50,750 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:02:50,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 353 transitions, 4957 flow. Second operand has 17 states, 17 states have (on average 53.64705882352941) internal successors, (912), 17 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:50,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:02:50,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:02:50,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:02:51,268 INFO L124 PetriNetUnfolderBase]: 402/2019 cut-off events. [2023-11-29 19:02:51,268 INFO L125 PetriNetUnfolderBase]: For 6311/6852 co-relation queries the response was YES. [2023-11-29 19:02:51,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6948 conditions, 2019 events. 402/2019 cut-off events. For 6311/6852 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 15579 event pairs, 0 based on Foata normal form. 63/1914 useless extension candidates. Maximal degree in co-relation 6885. Up to 369 conditions per place. [2023-11-29 19:02:51,275 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 73 selfloop transitions, 25 changer transitions 496/636 dead transitions. [2023-11-29 19:02:51,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 636 transitions, 10657 flow [2023-11-29 19:02:51,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 19:02:51,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 19:02:51,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1745 transitions. [2023-11-29 19:02:51,279 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8277988614800759 [2023-11-29 19:02:51,279 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1745 transitions. [2023-11-29 19:02:51,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1745 transitions. [2023-11-29 19:02:51,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:02:51,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1745 transitions. [2023-11-29 19:02:51,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 56.29032258064516) internal successors, (1745), 31 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:51,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 68.0) internal successors, (2176), 32 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:51,285 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 68.0) internal successors, (2176), 32 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:51,286 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 111 predicate places. [2023-11-29 19:02:51,286 INFO L500 AbstractCegarLoop]: Abstraction has has 179 places, 636 transitions, 10657 flow [2023-11-29 19:02:51,286 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 53.64705882352941) internal successors, (912), 17 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:51,286 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:02:51,286 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:02:51,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 19:02:51,490 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 19:02:51,491 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:02:51,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:02:51,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1196497927, now seen corresponding path program 2 times [2023-11-29 19:02:51,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:02:51,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685736597] [2023-11-29 19:02:51,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:02:51,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:02:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:02:51,611 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:02:51,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:02:51,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685736597] [2023-11-29 19:02:51,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685736597] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:02:51,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045744298] [2023-11-29 19:02:51,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 19:02:51,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:02:51,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:02:51,612 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:02:51,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 19:02:51,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 19:02:51,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:02:51,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 19:02:51,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:02:51,748 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:02:51,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:02:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:02:51,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045744298] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:02:51,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:02:51,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2023-11-29 19:02:51,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048296774] [2023-11-29 19:02:51,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:02:51,868 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 19:02:51,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:02:51,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 19:02:51,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-11-29 19:02:51,870 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:02:51,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 636 transitions, 10657 flow. Second operand has 17 states, 17 states have (on average 53.64705882352941) internal successors, (912), 17 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:51,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:02:51,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:02:51,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:02:52,652 INFO L124 PetriNetUnfolderBase]: 703/3522 cut-off events. [2023-11-29 19:02:52,652 INFO L125 PetriNetUnfolderBase]: For 14309/15778 co-relation queries the response was YES. [2023-11-29 19:02:52,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13188 conditions, 3522 events. 703/3522 cut-off events. For 14309/15778 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 32673 event pairs, 0 based on Foata normal form. 202/3435 useless extension candidates. Maximal degree in co-relation 13120. Up to 694 conditions per place. [2023-11-29 19:02:52,664 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 92 selfloop transitions, 82 changer transitions 846/1062 dead transitions. [2023-11-29 19:02:52,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 1062 transitions, 20349 flow [2023-11-29 19:02:52,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 19:02:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-11-29 19:02:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2291 transitions. [2023-11-29 19:02:52,667 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8217360114777619 [2023-11-29 19:02:52,667 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2291 transitions. [2023-11-29 19:02:52,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2291 transitions. [2023-11-29 19:02:52,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:02:52,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2291 transitions. [2023-11-29 19:02:52,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 55.8780487804878) internal successors, (2291), 41 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:52,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 68.0) internal successors, (2856), 42 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:52,674 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 68.0) internal successors, (2856), 42 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:52,674 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 151 predicate places. [2023-11-29 19:02:52,674 INFO L500 AbstractCegarLoop]: Abstraction has has 219 places, 1062 transitions, 20349 flow [2023-11-29 19:02:52,674 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 53.64705882352941) internal successors, (912), 17 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:52,674 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:02:52,675 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:02:52,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 19:02:52,881 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:02:52,881 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:02:52,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:02:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash 417271697, now seen corresponding path program 3 times [2023-11-29 19:02:52,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:02:52,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909402411] [2023-11-29 19:02:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:02:52,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:02:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:02:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:02:52,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:02:52,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909402411] [2023-11-29 19:02:52,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909402411] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:02:52,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844696192] [2023-11-29 19:02:52,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 19:02:52,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:02:52,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:02:52,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:02:53,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 19:02:53,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 19:02:53,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:02:53,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 19:02:53,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:02:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:02:53,092 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:02:53,177 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:02:53,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844696192] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:02:53,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:02:53,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2023-11-29 19:02:53,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287337325] [2023-11-29 19:02:53,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:02:53,178 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 19:02:53,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:02:53,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 19:02:53,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-29 19:02:53,179 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:02:53,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 1062 transitions, 20349 flow. Second operand has 17 states, 17 states have (on average 53.64705882352941) internal successors, (912), 17 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:53,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:02:53,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:02:53,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:02:54,142 INFO L124 PetriNetUnfolderBase]: 954/4927 cut-off events. [2023-11-29 19:02:54,142 INFO L125 PetriNetUnfolderBase]: For 23594/25015 co-relation queries the response was YES. [2023-11-29 19:02:54,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19546 conditions, 4927 events. 954/4927 cut-off events. For 23594/25015 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 50272 event pairs, 0 based on Foata normal form. 178/4694 useless extension candidates. Maximal degree in co-relation 19473. Up to 977 conditions per place. [2023-11-29 19:02:54,167 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 117 selfloop transitions, 137 changer transitions 1146/1442 dead transitions. [2023-11-29 19:02:54,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 1442 transitions, 30733 flow [2023-11-29 19:02:54,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 19:02:54,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-11-29 19:02:54,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2281 transitions. [2023-11-29 19:02:54,170 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8181492109038737 [2023-11-29 19:02:54,170 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2281 transitions. [2023-11-29 19:02:54,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2281 transitions. [2023-11-29 19:02:54,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:02:54,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2281 transitions. [2023-11-29 19:02:54,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 55.63414634146341) internal successors, (2281), 41 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:54,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 68.0) internal successors, (2856), 42 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:54,178 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 68.0) internal successors, (2856), 42 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:54,179 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 191 predicate places. [2023-11-29 19:02:54,179 INFO L500 AbstractCegarLoop]: Abstraction has has 259 places, 1442 transitions, 30733 flow [2023-11-29 19:02:54,179 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 53.64705882352941) internal successors, (912), 17 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:54,179 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:02:54,179 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:02:54,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 19:02:54,383 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:02:54,384 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:02:54,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:02:54,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1734588324, now seen corresponding path program 4 times [2023-11-29 19:02:54,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:02:54,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477400085] [2023-11-29 19:02:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:02:54,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:02:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:02:54,563 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:02:54,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:02:54,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477400085] [2023-11-29 19:02:54,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477400085] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:02:54,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032213376] [2023-11-29 19:02:54,564 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 19:02:54,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:02:54,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:02:54,565 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:02:54,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 19:02:54,624 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 19:02:54,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:02:54,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 19:02:54,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:02:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:02:54,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:02:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:02:54,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032213376] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:02:54,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:02:54,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2023-11-29 19:02:54,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443849149] [2023-11-29 19:02:54,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:02:54,955 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 19:02:54,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:02:54,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 19:02:54,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2023-11-29 19:02:54,957 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:02:54,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 1442 transitions, 30733 flow. Second operand has 26 states, 26 states have (on average 53.34615384615385) internal successors, (1387), 26 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:54,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:02:54,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:02:54,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:02:56,780 INFO L124 PetriNetUnfolderBase]: 1658/8519 cut-off events. [2023-11-29 19:02:56,780 INFO L125 PetriNetUnfolderBase]: For 48707/51147 co-relation queries the response was YES. [2023-11-29 19:02:56,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36424 conditions, 8519 events. 1658/8519 cut-off events. For 48707/51147 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 93375 event pairs, 0 based on Foata normal form. 265/8075 useless extension candidates. Maximal degree in co-relation 36346. Up to 1711 conditions per place. [2023-11-29 19:02:56,816 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 199 selfloop transitions, 179 changer transitions 2097/2517 dead transitions. [2023-11-29 19:02:56,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 2517 transitions, 59317 flow [2023-11-29 19:02:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 19:02:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-29 19:02:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2673 transitions. [2023-11-29 19:02:56,819 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8189338235294118 [2023-11-29 19:02:56,819 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2673 transitions. [2023-11-29 19:02:56,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2673 transitions. [2023-11-29 19:02:56,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:02:56,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2673 transitions. [2023-11-29 19:02:56,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 55.6875) internal successors, (2673), 48 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:56,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 68.0) internal successors, (3332), 49 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:56,827 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 68.0) internal successors, (3332), 49 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:56,827 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 238 predicate places. [2023-11-29 19:02:56,828 INFO L500 AbstractCegarLoop]: Abstraction has has 306 places, 2517 transitions, 59317 flow [2023-11-29 19:02:56,828 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 53.34615384615385) internal successors, (1387), 26 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:56,828 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:02:56,828 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:02:56,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 19:02:57,032 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 19:02:57,033 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:02:57,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:02:57,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1261955236, now seen corresponding path program 5 times [2023-11-29 19:02:57,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:02:57,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344280735] [2023-11-29 19:02:57,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:02:57,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:02:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:02:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:02:57,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:02:57,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344280735] [2023-11-29 19:02:57,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344280735] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:02:57,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088580054] [2023-11-29 19:02:57,216 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 19:02:57,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:02:57,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:02:57,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:02:57,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 19:02:57,279 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-29 19:02:57,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:02:57,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 19:02:57,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:02:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:02:57,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:02:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:02:57,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088580054] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:02:57,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:02:57,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2023-11-29 19:02:57,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937794108] [2023-11-29 19:02:57,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:02:57,676 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 19:02:57,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:02:57,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 19:02:57,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2023-11-29 19:02:57,678 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:02:57,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 2517 transitions, 59317 flow. Second operand has 26 states, 26 states have (on average 53.30769230769231) internal successors, (1386), 26 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:02:57,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:02:57,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:02:57,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:03:01,135 INFO L124 PetriNetUnfolderBase]: 2810/14687 cut-off events. [2023-11-29 19:03:01,135 INFO L125 PetriNetUnfolderBase]: For 100045/104176 co-relation queries the response was YES. [2023-11-29 19:03:01,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66176 conditions, 14687 events. 2810/14687 cut-off events. For 100045/104176 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 175705 event pairs, 0 based on Foata normal form. 379/13825 useless extension candidates. Maximal degree in co-relation 66093. Up to 2922 conditions per place. [2023-11-29 19:03:01,191 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 286 selfloop transitions, 335 changer transitions 3554/4217 dead transitions. [2023-11-29 19:03:01,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 4217 transitions, 108451 flow [2023-11-29 19:03:01,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-29 19:03:01,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-11-29 19:03:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3224 transitions. [2023-11-29 19:03:01,200 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8174442190669371 [2023-11-29 19:03:01,201 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3224 transitions. [2023-11-29 19:03:01,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3224 transitions. [2023-11-29 19:03:01,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:03:01,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3224 transitions. [2023-11-29 19:03:01,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 55.58620689655172) internal successors, (3224), 58 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:01,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 68.0) internal successors, (4012), 59 states have internal predecessors, (4012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:01,223 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 68.0) internal successors, (4012), 59 states have internal predecessors, (4012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:01,223 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 295 predicate places. [2023-11-29 19:03:01,224 INFO L500 AbstractCegarLoop]: Abstraction has has 363 places, 4217 transitions, 108451 flow [2023-11-29 19:03:01,224 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 53.30769230769231) internal successors, (1386), 26 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:01,224 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:03:01,224 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:03:01,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 19:03:01,428 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:03:01,429 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:03:01,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:03:01,429 INFO L85 PathProgramCache]: Analyzing trace with hash 136856473, now seen corresponding path program 6 times [2023-11-29 19:03:01,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:03:01,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314210617] [2023-11-29 19:03:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:03:01,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:03:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:03:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:03:01,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:03:01,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314210617] [2023-11-29 19:03:01,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314210617] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:03:01,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016648332] [2023-11-29 19:03:01,769 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 19:03:01,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:03:01,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:03:01,770 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:03:01,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 19:03:01,855 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-11-29 19:03:01,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:03:01,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 19:03:01,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:03:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:03:02,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:03:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:03:02,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016648332] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:03:02,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:03:02,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 29 [2023-11-29 19:03:02,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344485278] [2023-11-29 19:03:02,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:03:02,321 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 19:03:02,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:03:02,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 19:03:02,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2023-11-29 19:03:02,323 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:03:02,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 4217 transitions, 108451 flow. Second operand has 29 states, 29 states have (on average 53.41379310344828) internal successors, (1549), 29 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:02,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:03:02,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:03:02,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:03:07,775 INFO L124 PetriNetUnfolderBase]: 3076/16095 cut-off events. [2023-11-29 19:03:07,775 INFO L125 PetriNetUnfolderBase]: For 125736/129458 co-relation queries the response was YES. [2023-11-29 19:03:07,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77061 conditions, 16095 events. 3076/16095 cut-off events. For 125736/129458 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 190119 event pairs, 0 based on Foata normal form. 160/14882 useless extension candidates. Maximal degree in co-relation 76973. Up to 3172 conditions per place. [2023-11-29 19:03:07,846 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 610 selfloop transitions, 47 changer transitions 3917/4616 dead transitions. [2023-11-29 19:03:07,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 4616 transitions, 127957 flow [2023-11-29 19:03:07,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-29 19:03:07,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-11-29 19:03:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 3089 transitions. [2023-11-29 19:03:07,848 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8259358288770053 [2023-11-29 19:03:07,848 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 3089 transitions. [2023-11-29 19:03:07,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 3089 transitions. [2023-11-29 19:03:07,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:03:07,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 3089 transitions. [2023-11-29 19:03:07,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 56.163636363636364) internal successors, (3089), 55 states have internal predecessors, (3089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:07,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 68.0) internal successors, (3808), 56 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:07,855 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 68.0) internal successors, (3808), 56 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:07,855 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 349 predicate places. [2023-11-29 19:03:07,855 INFO L500 AbstractCegarLoop]: Abstraction has has 417 places, 4616 transitions, 127957 flow [2023-11-29 19:03:07,856 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 53.41379310344828) internal successors, (1549), 29 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:07,856 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:03:07,856 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:03:07,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 19:03:08,060 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:03:08,060 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:03:08,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:03:08,061 INFO L85 PathProgramCache]: Analyzing trace with hash -991504793, now seen corresponding path program 7 times [2023-11-29 19:03:08,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:03:08,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930161905] [2023-11-29 19:03:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:03:08,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:03:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:03:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:03:08,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:03:08,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930161905] [2023-11-29 19:03:08,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930161905] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:03:08,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016505502] [2023-11-29 19:03:08,367 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 19:03:08,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:03:08,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:03:08,368 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:03:08,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 19:03:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:03:08,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 19:03:08,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:03:08,630 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:03:08,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:03:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:03:09,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016505502] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:03:09,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:03:09,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 31 [2023-11-29 19:03:09,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801434318] [2023-11-29 19:03:09,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:03:09,061 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 19:03:09,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:03:09,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 19:03:09,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2023-11-29 19:03:09,063 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:03:09,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 4616 transitions, 127957 flow. Second operand has 31 states, 31 states have (on average 53.38709677419355) internal successors, (1655), 31 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:09,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:03:09,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:03:09,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:03:17,088 INFO L124 PetriNetUnfolderBase]: 4020/21260 cut-off events. [2023-11-29 19:03:17,088 INFO L125 PetriNetUnfolderBase]: For 191577/196248 co-relation queries the response was YES. [2023-11-29 19:03:17,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106739 conditions, 21260 events. 4020/21260 cut-off events. For 191577/196248 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 262886 event pairs, 0 based on Foata normal form. 275/19696 useless extension candidates. Maximal degree in co-relation 106646. Up to 4116 conditions per place. [2023-11-29 19:03:17,162 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 594 selfloop transitions, 211 changer transitions 5185/6032 dead transitions. [2023-11-29 19:03:17,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 6032 transitions, 179569 flow [2023-11-29 19:03:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-29 19:03:17,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2023-11-29 19:03:17,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 3630 transitions. [2023-11-29 19:03:17,165 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8212669683257918 [2023-11-29 19:03:17,165 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 3630 transitions. [2023-11-29 19:03:17,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 3630 transitions. [2023-11-29 19:03:17,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:03:17,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 3630 transitions. [2023-11-29 19:03:17,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 55.84615384615385) internal successors, (3630), 65 states have internal predecessors, (3630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:17,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 68.0) internal successors, (4488), 66 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:17,172 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 68.0) internal successors, (4488), 66 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:17,173 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 413 predicate places. [2023-11-29 19:03:17,173 INFO L500 AbstractCegarLoop]: Abstraction has has 481 places, 6032 transitions, 179569 flow [2023-11-29 19:03:17,173 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 53.38709677419355) internal successors, (1655), 31 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:17,173 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:03:17,173 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:03:17,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 19:03:17,377 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 19:03:17,377 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:03:17,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:03:17,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1866858231, now seen corresponding path program 8 times [2023-11-29 19:03:17,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:03:17,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299169613] [2023-11-29 19:03:17,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:03:17,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:03:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:03:17,640 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:03:17,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:03:17,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299169613] [2023-11-29 19:03:17,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299169613] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:03:17,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314925904] [2023-11-29 19:03:17,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 19:03:17,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:03:17,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:03:17,643 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:03:17,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 19:03:17,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 19:03:17,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:03:17,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 19:03:17,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:03:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:03:17,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:03:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:03:18,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314925904] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:03:18,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:03:18,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 35 [2023-11-29 19:03:18,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917186326] [2023-11-29 19:03:18,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:03:18,211 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 19:03:18,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:03:18,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 19:03:18,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 19:03:18,213 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:03:18,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 6032 transitions, 179569 flow. Second operand has 35 states, 35 states have (on average 53.34285714285714) internal successors, (1867), 35 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:18,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:03:18,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:03:18,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:03:30,814 INFO L124 PetriNetUnfolderBase]: 4831/25453 cut-off events. [2023-11-29 19:03:30,814 INFO L125 PetriNetUnfolderBase]: For 264118/270222 co-relation queries the response was YES. [2023-11-29 19:03:30,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135337 conditions, 25453 events. 4831/25453 cut-off events. For 264118/270222 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 322428 event pairs, 0 based on Foata normal form. 474/23712 useless extension candidates. Maximal degree in co-relation 135239. Up to 4941 conditions per place. [2023-11-29 19:03:30,919 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 464 selfloop transitions, 476 changer transitions 6256/7238 dead transitions. [2023-11-29 19:03:30,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 7238 transitions, 230125 flow [2023-11-29 19:03:30,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-29 19:03:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-11-29 19:03:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 3834 transitions. [2023-11-29 19:03:30,922 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8171355498721228 [2023-11-29 19:03:30,922 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 3834 transitions. [2023-11-29 19:03:30,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 3834 transitions. [2023-11-29 19:03:30,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:03:30,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 3834 transitions. [2023-11-29 19:03:30,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 55.56521739130435) internal successors, (3834), 69 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:30,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 68.0) internal successors, (4760), 70 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:30,930 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 68.0) internal successors, (4760), 70 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:30,930 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 481 predicate places. [2023-11-29 19:03:30,930 INFO L500 AbstractCegarLoop]: Abstraction has has 549 places, 7238 transitions, 230125 flow [2023-11-29 19:03:30,931 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 53.34285714285714) internal successors, (1867), 35 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:30,931 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:03:30,931 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:03:30,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 19:03:31,134 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 19:03:31,135 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:03:31,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:03:31,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1940502665, now seen corresponding path program 9 times [2023-11-29 19:03:31,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:03:31,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060426479] [2023-11-29 19:03:31,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:03:31,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:03:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:03:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:03:31,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:03:31,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060426479] [2023-11-29 19:03:31,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060426479] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:03:31,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283139830] [2023-11-29 19:03:31,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 19:03:31,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:03:31,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:03:31,396 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:03:31,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 19:03:31,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-11-29 19:03:31,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:03:31,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 19:03:31,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:03:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:03:31,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:03:31,917 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:03:31,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283139830] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:03:31,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:03:31,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 34 [2023-11-29 19:03:31,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999549603] [2023-11-29 19:03:31,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:03:31,918 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 19:03:31,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:03:31,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 19:03:31,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2023-11-29 19:03:31,919 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:03:31,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 7238 transitions, 230125 flow. Second operand has 34 states, 34 states have (on average 53.3235294117647) internal successors, (1813), 34 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:31,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:03:31,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:03:31,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:03:47,767 INFO L124 PetriNetUnfolderBase]: 5212/27424 cut-off events. [2023-11-29 19:03:47,768 INFO L125 PetriNetUnfolderBase]: For 327367/334424 co-relation queries the response was YES. [2023-11-29 19:03:47,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153945 conditions, 27424 events. 5212/27424 cut-off events. For 327367/334424 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 351704 event pairs, 0 based on Foata normal form. 567/25612 useless extension candidates. Maximal degree in co-relation 153842. Up to 5371 conditions per place. [2023-11-29 19:03:47,885 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 508 selfloop transitions, 569 changer transitions 6631/7750 dead transitions. [2023-11-29 19:03:47,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 7750 transitions, 261909 flow [2023-11-29 19:03:47,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-11-29 19:03:47,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-11-29 19:03:47,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 4232 transitions. [2023-11-29 19:03:47,888 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8188854489164087 [2023-11-29 19:03:47,888 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 4232 transitions. [2023-11-29 19:03:47,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 4232 transitions. [2023-11-29 19:03:47,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:03:47,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 4232 transitions. [2023-11-29 19:03:47,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 55.68421052631579) internal successors, (4232), 76 states have internal predecessors, (4232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:47,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 68.0) internal successors, (5236), 77 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:47,896 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 68.0) internal successors, (5236), 77 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:47,896 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 556 predicate places. [2023-11-29 19:03:47,896 INFO L500 AbstractCegarLoop]: Abstraction has has 624 places, 7750 transitions, 261909 flow [2023-11-29 19:03:47,897 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 53.3235294117647) internal successors, (1813), 34 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:47,897 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:03:47,897 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:03:47,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 19:03:48,104 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 19:03:48,104 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:03:48,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:03:48,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2022637990, now seen corresponding path program 10 times [2023-11-29 19:03:48,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:03:48,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843081529] [2023-11-29 19:03:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:03:48,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:03:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:03:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:03:48,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:03:48,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843081529] [2023-11-29 19:03:48,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843081529] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:03:48,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345861120] [2023-11-29 19:03:48,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 19:03:48,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:03:48,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:03:48,394 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:03:48,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 19:03:48,476 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 19:03:48,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:03:48,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 19:03:48,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:03:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:03:48,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:03:48,841 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 19:03:48,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345861120] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:03:48,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:03:48,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 29 [2023-11-29 19:03:48,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3139472] [2023-11-29 19:03:48,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:03:48,842 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 19:03:48,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:03:48,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 19:03:48,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2023-11-29 19:03:48,844 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:03:48,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 7750 transitions, 261909 flow. Second operand has 29 states, 29 states have (on average 53.44827586206897) internal successors, (1550), 29 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:03:48,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:03:48,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:03:48,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:04:08,624 INFO L124 PetriNetUnfolderBase]: 5465/28559 cut-off events. [2023-11-29 19:04:08,625 INFO L125 PetriNetUnfolderBase]: For 392835/401858 co-relation queries the response was YES. [2023-11-29 19:04:08,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169464 conditions, 28559 events. 5465/28559 cut-off events. For 392835/401858 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 366230 event pairs, 0 based on Foata normal form. 922/27020 useless extension candidates. Maximal degree in co-relation 169356. Up to 5630 conditions per place. [2023-11-29 19:04:08,741 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 541 selfloop transitions, 583 changer transitions 6959/8125 dead transitions. [2023-11-29 19:04:08,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 8125 transitions, 290809 flow [2023-11-29 19:04:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-11-29 19:04:08,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-11-29 19:04:08,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 3883 transitions. [2023-11-29 19:04:08,744 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8157563025210084 [2023-11-29 19:04:08,744 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 3883 transitions. [2023-11-29 19:04:08,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 3883 transitions. [2023-11-29 19:04:08,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:04:08,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 3883 transitions. [2023-11-29 19:04:08,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 55.47142857142857) internal successors, (3883), 70 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:04:08,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 68.0) internal successors, (4828), 71 states have internal predecessors, (4828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:04:08,751 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 68.0) internal successors, (4828), 71 states have internal predecessors, (4828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:04:08,751 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 625 predicate places. [2023-11-29 19:04:08,751 INFO L500 AbstractCegarLoop]: Abstraction has has 693 places, 8125 transitions, 290809 flow [2023-11-29 19:04:08,751 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 53.44827586206897) internal successors, (1550), 29 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:04:08,751 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:04:08,751 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:04:08,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 19:04:08,956 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 19:04:08,956 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:04:08,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:04:08,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1892059148, now seen corresponding path program 11 times [2023-11-29 19:04:08,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:04:08,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350274639] [2023-11-29 19:04:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:04:08,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:04:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:04:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:04:09,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:04:09,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350274639] [2023-11-29 19:04:09,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350274639] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:04:09,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163720618] [2023-11-29 19:04:09,226 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 19:04:09,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:04:09,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:04:09,228 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:04:09,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 19:04:09,315 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-11-29 19:04:09,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:04:09,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 19:04:09,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:04:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:04:09,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 19:04:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:04:09,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163720618] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 19:04:09,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 19:04:09,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 30 [2023-11-29 19:04:09,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810602113] [2023-11-29 19:04:09,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 19:04:09,675 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 19:04:09,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:04:09,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 19:04:09,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2023-11-29 19:04:09,677 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-11-29 19:04:09,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 8125 transitions, 290809 flow. Second operand has 30 states, 30 states have (on average 53.333333333333336) internal successors, (1600), 30 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:04:09,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:04:09,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-11-29 19:04:09,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:04:30,142 INFO L124 PetriNetUnfolderBase]: 5503/28652 cut-off events. [2023-11-29 19:04:30,142 INFO L125 PetriNetUnfolderBase]: For 443973/453220 co-relation queries the response was YES. [2023-11-29 19:04:30,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178907 conditions, 28652 events. 5503/28652 cut-off events. For 443973/453220 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 367377 event pairs, 0 based on Foata normal form. 754/26957 useless extension candidates. Maximal degree in co-relation 178794. Up to 5669 conditions per place. [2023-11-29 19:04:30,264 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 525 selfloop transitions, 613 changer transitions 7024/8204 dead transitions. [2023-11-29 19:04:30,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 770 places, 8204 transitions, 309961 flow [2023-11-29 19:04:30,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-11-29 19:04:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2023-11-29 19:04:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 4326 transitions. [2023-11-29 19:04:30,267 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8156108597285068 [2023-11-29 19:04:30,267 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 4326 transitions. [2023-11-29 19:04:30,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 4326 transitions. [2023-11-29 19:04:30,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:04:30,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 4326 transitions. [2023-11-29 19:04:30,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 55.46153846153846) internal successors, (4326), 78 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:04:30,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 68.0) internal successors, (5372), 79 states have internal predecessors, (5372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:04:30,275 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 68.0) internal successors, (5372), 79 states have internal predecessors, (5372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:04:30,275 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 702 predicate places. [2023-11-29 19:04:30,275 INFO L500 AbstractCegarLoop]: Abstraction has has 770 places, 8204 transitions, 309961 flow [2023-11-29 19:04:30,275 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 53.333333333333336) internal successors, (1600), 30 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:04:30,275 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:04:30,275 INFO L232 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:04:30,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 19:04:30,479 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 19:04:30,480 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 19:04:30,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:04:30,480 INFO L85 PathProgramCache]: Analyzing trace with hash -785011434, now seen corresponding path program 12 times [2023-11-29 19:04:30,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:04:30,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120345338] [2023-11-29 19:04:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:04:30,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:04:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:04:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 393 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 19:04:30,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:04:30,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120345338] [2023-11-29 19:04:30,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120345338] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:04:30,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10724286] [2023-11-29 19:04:30,723 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 19:04:30,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:04:30,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:04:30,724 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 19:04:30,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 19:04:30,809 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-11-29 19:04:30,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 19:04:30,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 19:04:30,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:04:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 19:04:30,899 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 19:04:30,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10724286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:04:30,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 19:04:30,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2023-11-29 19:04:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821645276] [2023-11-29 19:04:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:04:30,900 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 19:04:30,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:04:30,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 19:04:30,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2023-11-29 19:04:30,901 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 68 [2023-11-29 19:04:30,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 8204 transitions, 309961 flow. Second operand has 23 states, 23 states have (on average 56.91304347826087) internal successors, (1309), 23 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:04:30,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:04:30,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 68 [2023-11-29 19:04:30,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:07:53,523 INFO L124 PetriNetUnfolderBase]: 26432/112942 cut-off events. [2023-11-29 19:07:53,524 INFO L125 PetriNetUnfolderBase]: For 1860302/1906146 co-relation queries the response was YES. [2023-11-29 19:07:55,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776580 conditions, 112942 events. 26432/112942 cut-off events. For 1860302/1906146 co-relation queries the response was YES. Maximal size of possible extension queue 2960. Compared 1803333 event pairs, 1 based on Foata normal form. 254/103464 useless extension candidates. Maximal degree in co-relation 776465. Up to 24016 conditions per place. [2023-11-29 19:07:55,580 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 0 selfloop transitions, 0 changer transitions 7437/7437 dead transitions. [2023-11-29 19:07:55,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 787 places, 7437 transitions, 279472 flow [2023-11-29 19:07:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 19:07:55,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 19:07:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1902 transitions. [2023-11-29 19:07:55,582 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8475935828877005 [2023-11-29 19:07:55,583 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1902 transitions. [2023-11-29 19:07:55,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1902 transitions. [2023-11-29 19:07:55,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:07:55,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1902 transitions. [2023-11-29 19:07:55,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 57.63636363636363) internal successors, (1902), 33 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:07:55,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 68.0) internal successors, (2312), 34 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:07:55,586 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 68.0) internal successors, (2312), 34 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:07:55,586 INFO L307 CegarLoopForPetriNet]: 68 programPoint places, 719 predicate places. [2023-11-29 19:07:55,586 INFO L500 AbstractCegarLoop]: Abstraction has has 787 places, 7437 transitions, 279472 flow [2023-11-29 19:07:55,587 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 56.91304347826087) internal successors, (1309), 23 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 19:07:55,590 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/triangular-longer-1.i_BEv2_AllErrorsAtOnce [2023-11-29 19:07:55,649 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-29 19:07:55,650 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-29 19:07:55,650 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-29 19:07:55,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 19:07:55,854 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:07:55,855 INFO L457 BasicCegarLoop]: Path program histogram: [12, 3, 2, 1, 1] [2023-11-29 19:07:55,857 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 19:07:55,857 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 19:07:55,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:07:55 BasicIcfg [2023-11-29 19:07:55,861 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 19:07:55,861 INFO L158 Benchmark]: Toolchain (without parser) took 309325.81ms. Allocated memory was 490.7MB in the beginning and 5.3GB in the end (delta: 4.8GB). Free memory was 446.3MB in the beginning and 3.1GB in the end (delta: -2.6GB). Peak memory consumption was 3.6GB. Max. memory is 16.0GB. [2023-11-29 19:07:55,861 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 346.0MB. Free memory is still 296.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 19:07:55,861 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.95ms. Allocated memory is still 490.7MB. Free memory was 445.9MB in the beginning and 426.2MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-11-29 19:07:55,862 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.87ms. Allocated memory is still 490.7MB. Free memory was 426.2MB in the beginning and 424.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 19:07:55,862 INFO L158 Benchmark]: Boogie Preprocessor took 27.91ms. Allocated memory is still 490.7MB. Free memory was 424.1MB in the beginning and 422.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 19:07:55,862 INFO L158 Benchmark]: RCFGBuilder took 242.56ms. Allocated memory is still 490.7MB. Free memory was 422.8MB in the beginning and 410.1MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-29 19:07:55,862 INFO L158 Benchmark]: TraceAbstraction took 308698.13ms. Allocated memory was 490.7MB in the beginning and 5.3GB in the end (delta: 4.8GB). Free memory was 409.4MB in the beginning and 3.1GB in the end (delta: -2.7GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. [2023-11-29 19:07:55,863 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 346.0MB. Free memory is still 296.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 313.95ms. Allocated memory is still 490.7MB. Free memory was 445.9MB in the beginning and 426.2MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.87ms. Allocated memory is still 490.7MB. Free memory was 426.2MB in the beginning and 424.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.91ms. Allocated memory is still 490.7MB. Free memory was 424.1MB in the beginning and 422.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 242.56ms. Allocated memory is still 490.7MB. Free memory was 422.8MB in the beginning and 410.1MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 308698.13ms. Allocated memory was 490.7MB in the beginning and 5.3GB in the end (delta: 4.8GB). Free memory was 409.4MB in the beginning and 3.1GB in the end (delta: -2.7GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 308.6s, OverallIterations: 19, TraceHistogramMax: 11, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 296.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4933 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4933 mSDsluCounter, 571 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 443 mSDsCounter, 471 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4118 IncrementalHoareTripleChecker+Invalid, 4589 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 471 mSolverCounterUnsat, 128 mSDtfsCounter, 4118 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3184 GetRequests, 2187 SyntacticMatches, 36 SemanticMatches, 961 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23158 ImplicationChecksByTransitivity, 8.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=309961occurred in iteration=18, InterpolantAutomatonStates: 754, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 2640 NumberOfCodeBlocks, 2635 NumberOfCodeBlocksAsserted, 80 NumberOfCheckSat, 3677 ConstructedInterpolants, 0 QuantifiedInterpolants, 15165 SizeOfPredicates, 173 NumberOfNonLiveVariables, 2665 ConjunctsInSsa, 235 ConjunctsInUnsatCore, 44 InterpolantComputations, 7 PerfectInterpolantSequences, 975/7381 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! [2023-11-29 19:07:55,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...