/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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/goblint-regression/28-race_reach_76-tricky_address3_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:03:50,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:03:50,194 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 [2023-12-09 15:03:50,216 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:03:50,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:03:50,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:03:50,217 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:03:50,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:03:50,218 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:03:50,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:03:50,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:03:50,219 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:03:50,219 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:03:50,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:03:50,220 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:03:50,220 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:03:50,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:03:50,221 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:03:50,221 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:03:50,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:03:50,221 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:03:50,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:03:50,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:03:50,222 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:03:50,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:03:50,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:03:50,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:03:50,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:03:50,224 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:03:50,224 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:03:50,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:03:50,224 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:03:50,224 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:03:50,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:03:50,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:03:50,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:03:50,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:03:50,411 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:03:50,412 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:03:50,413 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2023-12-09 15:03:51,624 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:03:51,878 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:03:51,878 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i [2023-12-09 15:03:51,899 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d0c27c4d/894dc85755e74f1497d72fe5010187b1/FLAG9a0addfe8 [2023-12-09 15:03:51,914 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d0c27c4d/894dc85755e74f1497d72fe5010187b1 [2023-12-09 15:03:51,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:03:51,918 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:03:51,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:03:51,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:03:51,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:03:51,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:03:51" (1/1) ... [2023-12-09 15:03:51,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a8e41fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:03:51, skipping insertion in model container [2023-12-09 15:03:51,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:03:51" (1/1) ... [2023-12-09 15:03:51,971 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:03:52,307 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2023-12-09 15:03:52,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:03:52,361 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:03:52,394 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_76-tricky_address3_racefree.i[41323,41336] [2023-12-09 15:03:52,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:03:52,451 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:03:52,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:03:52 WrapperNode [2023-12-09 15:03:52,451 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:03:52,452 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:03:52,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:03:52,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:03:52,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:03:52" (1/1) ... [2023-12-09 15:03:52,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:03:52" (1/1) ... [2023-12-09 15:03:52,497 INFO L138 Inliner]: procedures = 271, calls = 49, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 219 [2023-12-09 15:03:52,497 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:03:52,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:03:52,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:03:52,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:03:52,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:03:52" (1/1) ... [2023-12-09 15:03:52,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:03:52" (1/1) ... [2023-12-09 15:03:52,524 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:03:52" (1/1) ... [2023-12-09 15:03:52,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:03:52" (1/1) ... [2023-12-09 15:03:52,539 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:03:52" (1/1) ... [2023-12-09 15:03:52,544 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:03:52" (1/1) ... [2023-12-09 15:03:52,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:03:52" (1/1) ... [2023-12-09 15:03:52,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:03:52" (1/1) ... [2023-12-09 15:03:52,552 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:03:52,553 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:03:52,553 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:03:52,553 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:03:52,554 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:03:52" (1/1) ... [2023-12-09 15:03:52,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:03:52,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:03:52,581 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) [2023-12-09 15:03:52,631 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 [2023-12-09 15:03:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:03:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:03:52,653 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-09 15:03:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:03:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:03:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-09 15:03:52,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:03:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-12-09 15:03:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-12-09 15:03:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:03:52,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:03:52,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:03:52,658 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:03:52,767 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:03:52,769 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:03:52,999 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:03:53,040 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:03:53,041 INFO L309 CfgBuilder]: Removed 23 assume(true) statements. [2023-12-09 15:03:53,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:03:53 BoogieIcfgContainer [2023-12-09 15:03:53,042 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:03:53,044 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:03:53,044 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:03:53,047 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:03:53,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:03:51" (1/3) ... [2023-12-09 15:03:53,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27db35ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:03:53, skipping insertion in model container [2023-12-09 15:03:53,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:03:52" (2/3) ... [2023-12-09 15:03:53,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27db35ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:03:53, skipping insertion in model container [2023-12-09 15:03:53,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:03:53" (3/3) ... [2023-12-09 15:03:53,049 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_76-tricky_address3_racefree.i [2023-12-09 15:03:53,070 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:03:53,070 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-09 15:03:53,070 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:03:53,144 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-12-09 15:03:53,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 211 transitions, 429 flow [2023-12-09 15:03:53,275 INFO L124 PetriNetUnfolderBase]: 45/290 cut-off events. [2023-12-09 15:03:53,276 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 15:03:53,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 290 events. 45/290 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 932 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2023-12-09 15:03:53,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 211 transitions, 429 flow [2023-12-09 15:03:53,290 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 206 transitions, 416 flow [2023-12-09 15:03:53,302 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:03:53,311 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;@46d7d10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:03:53,311 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-09 15:03:53,348 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:03:53,348 INFO L124 PetriNetUnfolderBase]: 12/120 cut-off events. [2023-12-09 15:03:53,348 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 15:03:53,348 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:03:53,349 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1] [2023-12-09 15:03:53,350 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-09 15:03:53,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:03:53,356 INFO L85 PathProgramCache]: Analyzing trace with hash -558047669, now seen corresponding path program 1 times [2023-12-09 15:03:53,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:03:53,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068635452] [2023-12-09 15:03:53,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:03:53,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:03:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:03:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-09 15:03:53,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:03:53,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068635452] [2023-12-09 15:03:53,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068635452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:03:53,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:03:53,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:03:53,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366564567] [2023-12-09 15:03:53,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:03:53,633 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:03:53,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:03:53,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:03:53,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:03:53,660 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 211 [2023-12-09 15:03:53,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 206 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 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) [2023-12-09 15:03:53,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:03:53,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 211 [2023-12-09 15:03:53,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:03:53,870 INFO L124 PetriNetUnfolderBase]: 84/790 cut-off events. [2023-12-09 15:03:53,871 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 15:03:53,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 790 events. 84/790 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4944 event pairs, 72 based on Foata normal form. 189/938 useless extension candidates. Maximal degree in co-relation 841. Up to 180 conditions per place. [2023-12-09 15:03:53,881 INFO L140 encePairwiseOnDemand]: 181/211 looper letters, 28 selfloop transitions, 2 changer transitions 1/181 dead transitions. [2023-12-09 15:03:53,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 181 transitions, 426 flow [2023-12-09 15:03:53,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:03:53,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:03:53,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2023-12-09 15:03:53,898 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8278041074249605 [2023-12-09 15:03:53,899 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2023-12-09 15:03:53,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2023-12-09 15:03:53,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:03:53,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2023-12-09 15:03:53,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:53,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:53,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:53,918 INFO L308 CegarLoopForPetriNet]: 179 programPoint places, 0 predicate places. [2023-12-09 15:03:53,919 INFO L500 AbstractCegarLoop]: Abstraction has has 179 places, 181 transitions, 426 flow [2023-12-09 15:03:53,919 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 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) [2023-12-09 15:03:53,919 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:03:53,920 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1] [2023-12-09 15:03:53,920 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:03:53,920 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-09 15:03:53,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:03:53,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1926381102, now seen corresponding path program 1 times [2023-12-09 15:03:53,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:03:53,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241665710] [2023-12-09 15:03:53,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:03:53,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:03:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:03:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-09 15:03:54,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:03:54,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241665710] [2023-12-09 15:03:54,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241665710] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:03:54,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752508070] [2023-12-09 15:03:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:03:54,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:03:54,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:03:54,068 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) [2023-12-09 15:03:54,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:03:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:03:54,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:03:54,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:03:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-09 15:03:54,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:03:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-09 15:03:54,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752508070] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:03:54,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:03:54,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-12-09 15:03:54,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553804436] [2023-12-09 15:03:54,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:03:54,319 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:03:54,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:03:54,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:03:54,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:03:54,326 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 211 [2023-12-09 15:03:54,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 181 transitions, 426 flow. Second operand has 10 states, 10 states have (on average 156.2) internal successors, (1562), 10 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:54,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:03:54,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 211 [2023-12-09 15:03:54,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:03:54,562 INFO L124 PetriNetUnfolderBase]: 84/797 cut-off events. [2023-12-09 15:03:54,563 INFO L125 PetriNetUnfolderBase]: For 98/106 co-relation queries the response was YES. [2023-12-09 15:03:54,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1182 conditions, 797 events. 84/797 cut-off events. For 98/106 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4895 event pairs, 72 based on Foata normal form. 0/756 useless extension candidates. Maximal degree in co-relation 1002. Up to 185 conditions per place. [2023-12-09 15:03:54,567 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 29 selfloop transitions, 9 changer transitions 1/188 dead transitions. [2023-12-09 15:03:54,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 188 transitions, 526 flow [2023-12-09 15:03:54,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:03:54,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:03:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1426 transitions. [2023-12-09 15:03:54,570 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7509215376513955 [2023-12-09 15:03:54,571 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1426 transitions. [2023-12-09 15:03:54,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1426 transitions. [2023-12-09 15:03:54,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:03:54,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1426 transitions. [2023-12-09 15:03:54,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 158.44444444444446) internal successors, (1426), 9 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:54,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 211.0) internal successors, (2110), 10 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:54,580 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 211.0) internal successors, (2110), 10 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:54,581 INFO L308 CegarLoopForPetriNet]: 179 programPoint places, 8 predicate places. [2023-12-09 15:03:54,581 INFO L500 AbstractCegarLoop]: Abstraction has has 187 places, 188 transitions, 526 flow [2023-12-09 15:03:54,582 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 156.2) internal successors, (1562), 10 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:54,582 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:03:54,582 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 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, 1] [2023-12-09 15:03:54,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 15:03:54,787 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:03:54,788 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-09 15:03:54,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:03:54,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1488740722, now seen corresponding path program 2 times [2023-12-09 15:03:54,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:03:54,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846033276] [2023-12-09 15:03:54,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:03:54,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:03:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:03:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-09 15:03:55,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:03:55,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846033276] [2023-12-09 15:03:55,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846033276] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:03:55,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114664157] [2023-12-09 15:03:55,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:03:55,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:03:55,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:03:55,061 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) [2023-12-09 15:03:55,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:03:55,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:03:55,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:03:55,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:03:55,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:03:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-09 15:03:55,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:03:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-09 15:03:55,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114664157] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:03:55,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:03:55,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-12-09 15:03:55,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445749406] [2023-12-09 15:03:55,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:03:55,318 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-09 15:03:55,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:03:55,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-09 15:03:55,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-12-09 15:03:55,322 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 211 [2023-12-09 15:03:55,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 188 transitions, 526 flow. Second operand has 18 states, 18 states have (on average 156.33333333333334) internal successors, (2814), 18 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:55,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:03:55,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 211 [2023-12-09 15:03:55,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:03:55,662 INFO L124 PetriNetUnfolderBase]: 84/817 cut-off events. [2023-12-09 15:03:55,663 INFO L125 PetriNetUnfolderBase]: For 291/307 co-relation queries the response was YES. [2023-12-09 15:03:55,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 817 events. 84/817 cut-off events. For 291/307 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4943 event pairs, 72 based on Foata normal form. 0/776 useless extension candidates. Maximal degree in co-relation 1163. Up to 201 conditions per place. [2023-12-09 15:03:55,668 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 37 selfloop transitions, 21 changer transitions 1/208 dead transitions. [2023-12-09 15:03:55,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 208 transitions, 754 flow [2023-12-09 15:03:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-09 15:03:55,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-12-09 15:03:55,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3296 transitions. [2023-12-09 15:03:55,675 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7438501466937486 [2023-12-09 15:03:55,675 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3296 transitions. [2023-12-09 15:03:55,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3296 transitions. [2023-12-09 15:03:55,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:03:55,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3296 transitions. [2023-12-09 15:03:55,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 156.95238095238096) internal successors, (3296), 21 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:55,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 211.0) internal successors, (4642), 22 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:55,693 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 211.0) internal successors, (4642), 22 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:55,694 INFO L308 CegarLoopForPetriNet]: 179 programPoint places, 28 predicate places. [2023-12-09 15:03:55,694 INFO L500 AbstractCegarLoop]: Abstraction has has 207 places, 208 transitions, 754 flow [2023-12-09 15:03:55,695 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 156.33333333333334) internal successors, (2814), 18 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:55,696 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:03:55,696 INFO L233 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 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, 1] [2023-12-09 15:03:55,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 15:03:55,908 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,SelfDestructingSolverStorable2 [2023-12-09 15:03:55,909 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-09 15:03:55,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:03:55,909 INFO L85 PathProgramCache]: Analyzing trace with hash -43874126, now seen corresponding path program 3 times [2023-12-09 15:03:55,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:03:55,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839530357] [2023-12-09 15:03:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:03:55,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:03:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:03:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-09 15:03:56,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:03:56,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839530357] [2023-12-09 15:03:56,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839530357] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:03:56,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542011741] [2023-12-09 15:03:56,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:03:56,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:03:56,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:03:56,265 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) [2023-12-09 15:03:56,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 15:03:56,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-09 15:03:56,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:03:56,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:03:56,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:03:56,467 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-09 15:03:56,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:03:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-09 15:03:56,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542011741] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:03:56,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:03:56,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-12-09 15:03:56,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98399992] [2023-12-09 15:03:56,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:03:56,647 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-09 15:03:56,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:03:56,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-09 15:03:56,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-12-09 15:03:56,653 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 211 [2023-12-09 15:03:56,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 208 transitions, 754 flow. Second operand has 23 states, 23 states have (on average 156.47826086956522) internal successors, (3599), 23 states have internal predecessors, (3599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:56,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:03:56,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 211 [2023-12-09 15:03:56,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:03:57,110 INFO L124 PetriNetUnfolderBase]: 84/832 cut-off events. [2023-12-09 15:03:57,110 INFO L125 PetriNetUnfolderBase]: For 580/604 co-relation queries the response was YES. [2023-12-09 15:03:57,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 832 events. 84/832 cut-off events. For 580/604 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4910 event pairs, 72 based on Foata normal form. 0/791 useless extension candidates. Maximal degree in co-relation 1324. Up to 213 conditions per place. [2023-12-09 15:03:57,116 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 43 selfloop transitions, 30 changer transitions 1/223 dead transitions. [2023-12-09 15:03:57,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 223 transitions, 1014 flow [2023-12-09 15:03:57,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:03:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:03:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4696 transitions. [2023-12-09 15:03:57,126 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7418641390205372 [2023-12-09 15:03:57,126 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4696 transitions. [2023-12-09 15:03:57,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4696 transitions. [2023-12-09 15:03:57,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:03:57,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4696 transitions. [2023-12-09 15:03:57,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 156.53333333333333) internal successors, (4696), 30 states have internal predecessors, (4696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:57,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 211.0) internal successors, (6541), 31 states have internal predecessors, (6541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:57,148 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 211.0) internal successors, (6541), 31 states have internal predecessors, (6541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:57,149 INFO L308 CegarLoopForPetriNet]: 179 programPoint places, 57 predicate places. [2023-12-09 15:03:57,149 INFO L500 AbstractCegarLoop]: Abstraction has has 236 places, 223 transitions, 1014 flow [2023-12-09 15:03:57,151 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 156.47826086956522) internal successors, (3599), 23 states have internal predecessors, (3599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:57,151 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:03:57,151 INFO L233 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 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, 1] [2023-12-09 15:03:57,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 15:03:57,356 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:03:57,357 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-09 15:03:57,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:03:57,357 INFO L85 PathProgramCache]: Analyzing trace with hash 444447787, now seen corresponding path program 4 times [2023-12-09 15:03:57,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:03:57,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693038460] [2023-12-09 15:03:57,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:03:57,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:03:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 15:03:57,393 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 15:03:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 15:03:57,441 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 15:03:57,441 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 15:03:57,442 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-12-09 15:03:57,443 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-12-09 15:03:57,444 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-12-09 15:03:57,444 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-12-09 15:03:57,444 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:03:57,444 INFO L457 BasicCegarLoop]: Path program histogram: [4, 1] [2023-12-09 15:03:57,455 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 15:03:57,455 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-09 15:03:57,499 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:03:57,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 292 transitions, 600 flow [2023-12-09 15:03:57,554 INFO L124 PetriNetUnfolderBase]: 75/476 cut-off events. [2023-12-09 15:03:57,555 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-12-09 15:03:57,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 476 events. 75/476 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1951 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 292. Up to 12 conditions per place. [2023-12-09 15:03:57,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 292 transitions, 600 flow [2023-12-09 15:03:57,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 292 transitions, 600 flow [2023-12-09 15:03:57,570 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:03:57,571 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;@46d7d10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:03:57,571 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-12-09 15:03:57,578 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:03:57,578 INFO L124 PetriNetUnfolderBase]: 12/136 cut-off events. [2023-12-09 15:03:57,579 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 15:03:57,579 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:03:57,579 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:03:57,579 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-09 15:03:57,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:03:57,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1513109978, now seen corresponding path program 1 times [2023-12-09 15:03:57,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:03:57,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384517415] [2023-12-09 15:03:57,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:03:57,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:03:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:03:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:03:57,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:03:57,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384517415] [2023-12-09 15:03:57,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384517415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:03:57,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:03:57,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:03:57,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091104512] [2023-12-09 15:03:57,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:03:57,617 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:03:57,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:03:57,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:03:57,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:03:57,618 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 292 [2023-12-09 15:03:57,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 292 transitions, 600 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:57,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:03:57,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 292 [2023-12-09 15:03:57,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:03:58,806 INFO L124 PetriNetUnfolderBase]: 1577/7857 cut-off events. [2023-12-09 15:03:58,807 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-12-09 15:03:58,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10324 conditions, 7857 events. 1577/7857 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 86944 event pairs, 1464 based on Foata normal form. 2637/10128 useless extension candidates. Maximal degree in co-relation 1223. Up to 2411 conditions per place. [2023-12-09 15:03:58,869 INFO L140 encePairwiseOnDemand]: 250/292 looper letters, 39 selfloop transitions, 2 changer transitions 1/254 dead transitions. [2023-12-09 15:03:58,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 254 transitions, 606 flow [2023-12-09 15:03:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:03:58,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:03:58,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2023-12-09 15:03:58,872 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8230593607305936 [2023-12-09 15:03:58,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2023-12-09 15:03:58,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2023-12-09 15:03:58,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:03:58,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2023-12-09 15:03:58,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:58,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:58,876 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:58,878 INFO L308 CegarLoopForPetriNet]: 252 programPoint places, -1 predicate places. [2023-12-09 15:03:58,878 INFO L500 AbstractCegarLoop]: Abstraction has has 251 places, 254 transitions, 606 flow [2023-12-09 15:03:58,878 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:58,878 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:03:58,879 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:03:58,879 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 15:03:58,879 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-09 15:03:58,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:03:58,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1626753061, now seen corresponding path program 1 times [2023-12-09 15:03:58,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:03:58,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370604662] [2023-12-09 15:03:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:03:58,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:03:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:03:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:03:58,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:03:58,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370604662] [2023-12-09 15:03:58,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370604662] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:03:58,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948675759] [2023-12-09 15:03:58,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:03:58,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:03:58,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:03:58,945 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) [2023-12-09 15:03:58,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 15:03:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:03:59,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-09 15:03:59,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:03:59,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:03:59,040 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 15:03:59,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948675759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:03:59,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 15:03:59,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-09 15:03:59,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198071885] [2023-12-09 15:03:59,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:03:59,041 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:03:59,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:03:59,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:03:59,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:03:59,043 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 292 [2023-12-09 15:03:59,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 254 transitions, 606 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:03:59,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:03:59,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 292 [2023-12-09 15:03:59,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:00,505 INFO L124 PetriNetUnfolderBase]: 2487/9510 cut-off events. [2023-12-09 15:04:00,505 INFO L125 PetriNetUnfolderBase]: For 1993/2313 co-relation queries the response was YES. [2023-12-09 15:04:00,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16732 conditions, 9510 events. 2487/9510 cut-off events. For 1993/2313 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 106661 event pairs, 1104 based on Foata normal form. 0/8753 useless extension candidates. Maximal degree in co-relation 2161. Up to 3822 conditions per place. [2023-12-09 15:04:00,586 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 47 selfloop transitions, 2 changer transitions 1/266 dead transitions. [2023-12-09 15:04:00,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 266 transitions, 744 flow [2023-12-09 15:04:00,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:04:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:04:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2023-12-09 15:04:00,588 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7865296803652968 [2023-12-09 15:04:00,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2023-12-09 15:04:00,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2023-12-09 15:04:00,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:00,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2023-12-09 15:04:00,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:00,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:00,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:00,593 INFO L308 CegarLoopForPetriNet]: 252 programPoint places, 1 predicate places. [2023-12-09 15:04:00,593 INFO L500 AbstractCegarLoop]: Abstraction has has 253 places, 266 transitions, 744 flow [2023-12-09 15:04:00,594 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:00,594 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:00,594 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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, 1, 1] [2023-12-09 15:04:00,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 15:04:00,799 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:04:00,800 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-09 15:04:00,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:00,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1330449942, now seen corresponding path program 1 times [2023-12-09 15:04:00,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:00,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171393366] [2023-12-09 15:04:00,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:00,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-09 15:04:00,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:00,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171393366] [2023-12-09 15:04:00,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171393366] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:04:00,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851076958] [2023-12-09 15:04:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:00,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:04:00,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:04:00,852 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) [2023-12-09 15:04:00,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 15:04:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:00,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:04:00,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:04:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-09 15:04:00,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:04:00,993 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-09 15:04:00,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851076958] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:04:00,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:04:00,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-12-09 15:04:00,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730492465] [2023-12-09 15:04:00,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:04:00,994 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:04:00,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:00,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:04:00,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:04:00,998 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 292 [2023-12-09 15:04:00,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 266 transitions, 744 flow. Second operand has 10 states, 10 states have (on average 214.3) internal successors, (2143), 10 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:01,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:01,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 292 [2023-12-09 15:04:01,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:02,246 INFO L124 PetriNetUnfolderBase]: 2487/9517 cut-off events. [2023-12-09 15:04:02,247 INFO L125 PetriNetUnfolderBase]: For 5720/6360 co-relation queries the response was YES. [2023-12-09 15:04:02,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20071 conditions, 9517 events. 2487/9517 cut-off events. For 5720/6360 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 106750 event pairs, 1104 based on Foata normal form. 0/8760 useless extension candidates. Maximal degree in co-relation 2661. Up to 3822 conditions per place. [2023-12-09 15:04:02,345 INFO L140 encePairwiseOnDemand]: 286/292 looper letters, 48 selfloop transitions, 9 changer transitions 1/273 dead transitions. [2023-12-09 15:04:02,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 273 transitions, 882 flow [2023-12-09 15:04:02,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:04:02,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:04:02,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1959 transitions. [2023-12-09 15:04:02,352 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7454337899543378 [2023-12-09 15:04:02,352 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1959 transitions. [2023-12-09 15:04:02,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1959 transitions. [2023-12-09 15:04:02,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:02,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1959 transitions. [2023-12-09 15:04:02,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 217.66666666666666) internal successors, (1959), 9 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:02,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 292.0) internal successors, (2920), 10 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:02,376 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 292.0) internal successors, (2920), 10 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:02,376 INFO L308 CegarLoopForPetriNet]: 252 programPoint places, 9 predicate places. [2023-12-09 15:04:02,376 INFO L500 AbstractCegarLoop]: Abstraction has has 261 places, 273 transitions, 882 flow [2023-12-09 15:04:02,377 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 214.3) internal successors, (2143), 10 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:02,377 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:02,377 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2023-12-09 15:04:02,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-09 15:04:02,582 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:04:02,583 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-09 15:04:02,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:02,584 INFO L85 PathProgramCache]: Analyzing trace with hash -340245750, now seen corresponding path program 2 times [2023-12-09 15:04:02,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:02,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159575468] [2023-12-09 15:04:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:02,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-09 15:04:02,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:02,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159575468] [2023-12-09 15:04:02,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159575468] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:04:02,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353253844] [2023-12-09 15:04:02,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:04:02,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:04:02,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:04:02,786 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) [2023-12-09 15:04:02,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 15:04:02,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:04:02,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:04:02,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:04:02,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:04:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-09 15:04:02,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:04:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-09 15:04:02,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353253844] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:04:02,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:04:03,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-12-09 15:04:03,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839565945] [2023-12-09 15:04:03,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:04:03,001 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-09 15:04:03,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:03,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-09 15:04:03,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-12-09 15:04:03,005 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 292 [2023-12-09 15:04:03,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 273 transitions, 882 flow. Second operand has 18 states, 18 states have (on average 214.38888888888889) internal successors, (3859), 18 states have internal predecessors, (3859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:03,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:03,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 292 [2023-12-09 15:04:03,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:04,452 INFO L124 PetriNetUnfolderBase]: 2646/9710 cut-off events. [2023-12-09 15:04:04,452 INFO L125 PetriNetUnfolderBase]: For 11397/12213 co-relation queries the response was YES. [2023-12-09 15:04:04,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24283 conditions, 9710 events. 2646/9710 cut-off events. For 11397/12213 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 106796 event pairs, 1736 based on Foata normal form. 0/8939 useless extension candidates. Maximal degree in co-relation 3161. Up to 3981 conditions per place. [2023-12-09 15:04:04,520 INFO L140 encePairwiseOnDemand]: 286/292 looper letters, 56 selfloop transitions, 21 changer transitions 1/293 dead transitions. [2023-12-09 15:04:04,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 293 transitions, 1148 flow [2023-12-09 15:04:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-09 15:04:04,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-12-09 15:04:04,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4525 transitions. [2023-12-09 15:04:04,530 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7379321591650359 [2023-12-09 15:04:04,530 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4525 transitions. [2023-12-09 15:04:04,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4525 transitions. [2023-12-09 15:04:04,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:04,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4525 transitions. [2023-12-09 15:04:04,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 215.47619047619048) internal successors, (4525), 21 states have internal predecessors, (4525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:04,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 292.0) internal successors, (6424), 22 states have internal predecessors, (6424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:04,550 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 292.0) internal successors, (6424), 22 states have internal predecessors, (6424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:04,550 INFO L308 CegarLoopForPetriNet]: 252 programPoint places, 29 predicate places. [2023-12-09 15:04:04,551 INFO L500 AbstractCegarLoop]: Abstraction has has 281 places, 293 transitions, 1148 flow [2023-12-09 15:04:04,551 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 214.38888888888889) internal successors, (3859), 18 states have internal predecessors, (3859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:04,552 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:04,552 INFO L233 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 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] [2023-12-09 15:04:04,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-09 15:04:04,757 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:04:04,758 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-09 15:04:04,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:04,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1559506250, now seen corresponding path program 3 times [2023-12-09 15:04:04,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:04,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362700141] [2023-12-09 15:04:04,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:04,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-09 15:04:05,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:05,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362700141] [2023-12-09 15:04:05,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362700141] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:04:05,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726647203] [2023-12-09 15:04:05,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:04:05,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:04:05,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:04:05,029 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) [2023-12-09 15:04:05,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 15:04:05,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-12-09 15:04:05,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:04:05,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:04:05,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:04:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-09 15:04:05,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:04:05,492 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-12-09 15:04:05,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726647203] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:04:05,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:04:05,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-12-09 15:04:05,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001256118] [2023-12-09 15:04:05,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:04:05,494 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-09 15:04:05,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:05,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-09 15:04:05,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-12-09 15:04:05,498 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 292 [2023-12-09 15:04:05,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 293 transitions, 1148 flow. Second operand has 23 states, 23 states have (on average 214.52173913043478) internal successors, (4934), 23 states have internal predecessors, (4934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:05,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:05,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 292 [2023-12-09 15:04:05,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:07,284 INFO L124 PetriNetUnfolderBase]: 2646/9725 cut-off events. [2023-12-09 15:04:07,284 INFO L125 PetriNetUnfolderBase]: For 18512/19438 co-relation queries the response was YES. [2023-12-09 15:04:07,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27861 conditions, 9725 events. 2646/9725 cut-off events. For 18512/19438 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 106861 event pairs, 1736 based on Foata normal form. 0/8954 useless extension candidates. Maximal degree in co-relation 3661. Up to 3981 conditions per place. [2023-12-09 15:04:07,361 INFO L140 encePairwiseOnDemand]: 286/292 looper letters, 62 selfloop transitions, 30 changer transitions 1/308 dead transitions. [2023-12-09 15:04:07,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 308 transitions, 1446 flow [2023-12-09 15:04:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:04:07,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:04:07,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 6447 transitions. [2023-12-09 15:04:07,373 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7359589041095891 [2023-12-09 15:04:07,374 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 6447 transitions. [2023-12-09 15:04:07,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 6447 transitions. [2023-12-09 15:04:07,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:07,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 6447 transitions. [2023-12-09 15:04:07,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 214.9) internal successors, (6447), 30 states have internal predecessors, (6447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:07,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 292.0) internal successors, (9052), 31 states have internal predecessors, (9052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:07,400 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 292.0) internal successors, (9052), 31 states have internal predecessors, (9052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:07,401 INFO L308 CegarLoopForPetriNet]: 252 programPoint places, 58 predicate places. [2023-12-09 15:04:07,401 INFO L500 AbstractCegarLoop]: Abstraction has has 310 places, 308 transitions, 1446 flow [2023-12-09 15:04:07,403 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 214.52173913043478) internal successors, (4934), 23 states have internal predecessors, (4934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:07,403 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:07,403 INFO L233 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 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] [2023-12-09 15:04:07,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-09 15:04:07,609 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:04:07,610 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-09 15:04:07,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:07,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1460289119, now seen corresponding path program 4 times [2023-12-09 15:04:07,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:07,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191160550] [2023-12-09 15:04:07,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:07,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 15:04:07,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 15:04:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 15:04:07,695 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 15:04:07,695 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 15:04:07,696 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-12-09 15:04:07,696 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-12-09 15:04:07,696 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-12-09 15:04:07,696 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-12-09 15:04:07,696 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-12-09 15:04:07,696 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-09 15:04:07,697 INFO L457 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-12-09 15:04:07,697 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 15:04:07,697 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-09 15:04:07,740 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-12-09 15:04:07,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 373 transitions, 773 flow [2023-12-09 15:04:07,842 INFO L124 PetriNetUnfolderBase]: 110/697 cut-off events. [2023-12-09 15:04:07,842 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2023-12-09 15:04:07,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 697 events. 110/697 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3222 event pairs, 1 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 484. Up to 16 conditions per place. [2023-12-09 15:04:07,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 373 transitions, 773 flow [2023-12-09 15:04:07,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 373 transitions, 773 flow [2023-12-09 15:04:07,864 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:04:07,865 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;@46d7d10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:04:07,865 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-09 15:04:07,872 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:04:07,873 INFO L124 PetriNetUnfolderBase]: 12/136 cut-off events. [2023-12-09 15:04:07,873 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 15:04:07,873 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:07,873 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:07,873 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 15:04:07,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:07,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1222797467, now seen corresponding path program 1 times [2023-12-09 15:04:07,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:07,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971865039] [2023-12-09 15:04:07,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:07,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:07,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:04:07,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:07,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971865039] [2023-12-09 15:04:07,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971865039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:04:07,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:04:07,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:04:07,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941347353] [2023-12-09 15:04:07,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:04:07,901 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:04:07,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:07,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:04:07,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:04:07,902 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 373 [2023-12-09 15:04:07,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 373 transitions, 773 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:07,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:07,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 373 [2023-12-09 15:04:07,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:19,481 INFO L124 PetriNetUnfolderBase]: 22024/79784 cut-off events. [2023-12-09 15:04:19,481 INFO L125 PetriNetUnfolderBase]: For 1657/1657 co-relation queries the response was YES. [2023-12-09 15:04:20,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110125 conditions, 79784 events. 22024/79784 cut-off events. For 1657/1657 co-relation queries the response was YES. Maximal size of possible extension queue 2029. Compared 1176252 event pairs, 21001 based on Foata normal form. 32634/109037 useless extension candidates. Maximal degree in co-relation 10311. Up to 29680 conditions per place. [2023-12-09 15:04:20,582 INFO L140 encePairwiseOnDemand]: 319/373 looper letters, 49 selfloop transitions, 2 changer transitions 1/322 dead transitions. [2023-12-09 15:04:20,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 322 transitions, 773 flow [2023-12-09 15:04:20,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:04:20,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:04:20,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-12-09 15:04:20,584 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8194816800714924 [2023-12-09 15:04:20,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-12-09 15:04:20,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-12-09 15:04:20,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:20,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-12-09 15:04:20,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:20,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:20,588 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:20,589 INFO L308 CegarLoopForPetriNet]: 321 programPoint places, -2 predicate places. [2023-12-09 15:04:20,589 INFO L500 AbstractCegarLoop]: Abstraction has has 319 places, 322 transitions, 773 flow [2023-12-09 15:04:20,589 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:20,589 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:20,590 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:20,590 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-09 15:04:20,590 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 15:04:20,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:20,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1697303227, now seen corresponding path program 1 times [2023-12-09 15:04:20,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:20,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910429158] [2023-12-09 15:04:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:20,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:20,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:04:20,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:20,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910429158] [2023-12-09 15:04:20,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910429158] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:04:20,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047988464] [2023-12-09 15:04:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:20,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:04:20,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:04:20,635 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) [2023-12-09 15:04:20,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-09 15:04:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:20,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-09 15:04:20,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:04:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:04:20,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 15:04:20,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047988464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:04:20,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 15:04:20,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-09 15:04:20,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383990151] [2023-12-09 15:04:20,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:04:20,755 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:04:20,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:20,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:04:20,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:04:20,757 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 373 [2023-12-09 15:04:20,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 322 transitions, 773 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:20,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:20,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 373 [2023-12-09 15:04:20,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:35,225 INFO L124 PetriNetUnfolderBase]: 34598/99509 cut-off events. [2023-12-09 15:04:35,225 INFO L125 PetriNetUnfolderBase]: For 24913/27834 co-relation queries the response was YES. [2023-12-09 15:04:36,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189576 conditions, 99509 events. 34598/99509 cut-off events. For 24913/27834 co-relation queries the response was YES. Maximal size of possible extension queue 2740. Compared 1414249 event pairs, 21721 based on Foata normal form. 0/92497 useless extension candidates. Maximal degree in co-relation 16756. Up to 47129 conditions per place. [2023-12-09 15:04:36,716 INFO L140 encePairwiseOnDemand]: 370/373 looper letters, 57 selfloop transitions, 2 changer transitions 1/334 dead transitions. [2023-12-09 15:04:36,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 334 transitions, 931 flow [2023-12-09 15:04:36,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:04:36,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:04:36,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2023-12-09 15:04:36,718 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7801608579088471 [2023-12-09 15:04:36,718 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 873 transitions. [2023-12-09 15:04:36,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 873 transitions. [2023-12-09 15:04:36,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:36,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 873 transitions. [2023-12-09 15:04:36,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:36,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:36,721 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 373.0) internal successors, (1492), 4 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:36,722 INFO L308 CegarLoopForPetriNet]: 321 programPoint places, 0 predicate places. [2023-12-09 15:04:36,722 INFO L500 AbstractCegarLoop]: Abstraction has has 321 places, 334 transitions, 931 flow [2023-12-09 15:04:36,722 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:36,722 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:36,722 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:36,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-09 15:04:36,928 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,SelfDestructingSolverStorable12 [2023-12-09 15:04:36,928 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 15:04:36,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:36,929 INFO L85 PathProgramCache]: Analyzing trace with hash 152880695, now seen corresponding path program 1 times [2023-12-09 15:04:36,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:36,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483096293] [2023-12-09 15:04:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:36,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:04:36,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:36,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483096293] [2023-12-09 15:04:36,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483096293] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:04:36,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163454997] [2023-12-09 15:04:36,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:36,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:04:36,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:04:36,978 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) [2023-12-09 15:04:36,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-09 15:04:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:37,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:04:37,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:04:37,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:04:37,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:04:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:04:37,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163454997] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:04:37,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:04:37,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-12-09 15:04:37,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297926864] [2023-12-09 15:04:37,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:04:37,138 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:04:37,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:37,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:04:37,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:04:37,142 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 373 [2023-12-09 15:04:37,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 334 transitions, 931 flow. Second operand has 10 states, 10 states have (on average 272.4) internal successors, (2724), 10 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:37,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:37,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 373 [2023-12-09 15:04:37,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:04:53,752 INFO L124 PetriNetUnfolderBase]: 34599/99553 cut-off events. [2023-12-09 15:04:53,753 INFO L125 PetriNetUnfolderBase]: For 68130/74074 co-relation queries the response was YES. [2023-12-09 15:04:55,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231885 conditions, 99553 events. 34599/99553 cut-off events. For 68130/74074 co-relation queries the response was YES. Maximal size of possible extension queue 2740. Compared 1415292 event pairs, 33569 based on Foata normal form. 0/92520 useless extension candidates. Maximal degree in co-relation 20070. Up to 47129 conditions per place. [2023-12-09 15:04:56,154 INFO L140 encePairwiseOnDemand]: 367/373 looper letters, 58 selfloop transitions, 9 changer transitions 1/341 dead transitions. [2023-12-09 15:04:56,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 341 transitions, 1089 flow [2023-12-09 15:04:56,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:04:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:04:56,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2491 transitions. [2023-12-09 15:04:56,183 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7420315758117366 [2023-12-09 15:04:56,183 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2491 transitions. [2023-12-09 15:04:56,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2491 transitions. [2023-12-09 15:04:56,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:04:56,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2491 transitions. [2023-12-09 15:04:56,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 276.77777777777777) internal successors, (2491), 9 states have internal predecessors, (2491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:56,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:56,195 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 373.0) internal successors, (3730), 10 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:56,208 INFO L308 CegarLoopForPetriNet]: 321 programPoint places, 8 predicate places. [2023-12-09 15:04:56,208 INFO L500 AbstractCegarLoop]: Abstraction has has 329 places, 341 transitions, 1089 flow [2023-12-09 15:04:56,209 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 272.4) internal successors, (2724), 10 states have internal predecessors, (2724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:56,209 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:04:56,210 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:04:56,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-09 15:04:56,410 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,SelfDestructingSolverStorable13 [2023-12-09 15:04:56,410 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 15:04:56,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:04:56,411 INFO L85 PathProgramCache]: Analyzing trace with hash 643953207, now seen corresponding path program 2 times [2023-12-09 15:04:56,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:04:56,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352458976] [2023-12-09 15:04:56,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:04:56,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:04:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:04:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-09 15:04:56,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:04:56,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352458976] [2023-12-09 15:04:56,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352458976] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:04:56,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839179964] [2023-12-09 15:04:56,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:04:56,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:04:56,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:04:56,532 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) [2023-12-09 15:04:56,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-09 15:04:56,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:04:56,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:04:56,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:04:56,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:04:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:04:56,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:04:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:04:56,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839179964] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:04:56,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:04:56,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-12-09 15:04:56,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608431204] [2023-12-09 15:04:56,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:04:56,978 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:04:56,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:04:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:04:56,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:04:56,984 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 373 [2023-12-09 15:04:56,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 341 transitions, 1089 flow. Second operand has 19 states, 19 states have (on average 265.3157894736842) internal successors, (5041), 19 states have internal predecessors, (5041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:04:56,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:04:56,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 373 [2023-12-09 15:04:56,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:05:15,819 INFO L124 PetriNetUnfolderBase]: 38160/102719 cut-off events. [2023-12-09 15:05:15,820 INFO L125 PetriNetUnfolderBase]: For 117116/149843 co-relation queries the response was YES. [2023-12-09 15:05:17,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297095 conditions, 102719 events. 38160/102719 cut-off events. For 117116/149843 co-relation queries the response was YES. Maximal size of possible extension queue 2860. Compared 1425898 event pairs, 10754 based on Foata normal form. 16/95272 useless extension candidates. Maximal degree in co-relation 24694. Up to 50973 conditions per place. [2023-12-09 15:05:18,381 INFO L140 encePairwiseOnDemand]: 362/373 looper letters, 110 selfloop transitions, 26 changer transitions 1/398 dead transitions. [2023-12-09 15:05:18,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 398 transitions, 1747 flow [2023-12-09 15:05:18,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-09 15:05:18,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-12-09 15:05:18,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 6691 transitions. [2023-12-09 15:05:18,391 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7175335120643431 [2023-12-09 15:05:18,391 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 6691 transitions. [2023-12-09 15:05:18,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 6691 transitions. [2023-12-09 15:05:18,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:05:18,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 6691 transitions. [2023-12-09 15:05:18,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 267.64) internal successors, (6691), 25 states have internal predecessors, (6691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:05:18,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 373.0) internal successors, (9698), 26 states have internal predecessors, (9698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:05:18,429 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 373.0) internal successors, (9698), 26 states have internal predecessors, (9698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:05:18,430 INFO L308 CegarLoopForPetriNet]: 321 programPoint places, 32 predicate places. [2023-12-09 15:05:18,430 INFO L500 AbstractCegarLoop]: Abstraction has has 353 places, 398 transitions, 1747 flow [2023-12-09 15:05:18,431 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 265.3157894736842) internal successors, (5041), 19 states have internal predecessors, (5041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:05:18,431 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:05:18,431 INFO L233 CegarLoopForPetriNet]: trace histogram [7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:05:18,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-09 15:05:18,638 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,SelfDestructingSolverStorable14 [2023-12-09 15:05:18,638 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 15:05:18,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:05:18,639 INFO L85 PathProgramCache]: Analyzing trace with hash -791705453, now seen corresponding path program 1 times [2023-12-09 15:05:18,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:05:18,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293371066] [2023-12-09 15:05:18,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:18,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:05:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:18,981 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:05:18,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:05:18,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293371066] [2023-12-09 15:05:18,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293371066] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:05:18,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867065242] [2023-12-09 15:05:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:05:18,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:05:18,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:05:18,997 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) [2023-12-09 15:05:19,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-09 15:05:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:05:19,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:05:19,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:05:19,273 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:05:19,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:05:19,480 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:05:19,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867065242] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:05:19,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:05:19,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-12-09 15:05:19,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141265007] [2023-12-09 15:05:19,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:05:19,481 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-09 15:05:19,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:05:19,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-09 15:05:19,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-12-09 15:05:19,486 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 373 [2023-12-09 15:05:19,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 398 transitions, 1747 flow. Second operand has 23 states, 23 states have (on average 272.5652173913044) internal successors, (6269), 23 states have internal predecessors, (6269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:05:19,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:05:19,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 373 [2023-12-09 15:05:19,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand