/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_20-callback_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:02:06,947 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:02:07,010 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 15:02:07,041 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:02:07,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:02:07,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:02:07,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:02:07,043 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:02:07,043 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:02:07,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:02:07,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:02:07,047 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:02:07,047 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:02:07,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:02:07,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:02:07,048 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:02:07,048 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:02:07,048 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:02:07,049 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:02:07,049 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:02:07,049 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:02:07,049 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:02:07,050 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:02:07,050 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:02:07,050 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:02:07,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:02:07,051 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:02:07,051 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:02:07,051 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:02:07,051 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:02:07,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:02:07,052 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:02:07,052 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:02:07,053 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:02:07,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:02:07,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:02:07,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:02:07,259 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:02:07,261 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:02:07,262 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_racefree.i [2023-12-09 15:02:08,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:02:08,534 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:02:08,534 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_racefree.i [2023-12-09 15:02:08,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c99c5b26/2a741ea9e58d45ba912584dad4ccd327/FLAG599fab2f1 [2023-12-09 15:02:08,553 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c99c5b26/2a741ea9e58d45ba912584dad4ccd327 [2023-12-09 15:02:08,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:02:08,556 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:02:08,557 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:02:08,557 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:02:08,560 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:02:08,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:02:08" (1/1) ... [2023-12-09 15:02:08,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e2c257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:08, skipping insertion in model container [2023-12-09 15:02:08,561 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:02:08" (1/1) ... [2023-12-09 15:02:08,602 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:02:08,769 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_20-callback_racefree.i[30212,30225] [2023-12-09 15:02:08,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:02:08,795 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:02:08,816 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_20-callback_racefree.i[30212,30225] [2023-12-09 15:02:08,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:02:08,842 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:02:08,847 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:02:08,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:08 WrapperNode [2023-12-09 15:02:08,848 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:02:08,849 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:02:08,849 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:02:08,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:02:08,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:08" (1/1) ... [2023-12-09 15:02:08,874 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:08" (1/1) ... [2023-12-09 15:02:08,894 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 152 [2023-12-09 15:02:08,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:02:08,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:02:08,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:02:08,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:02:08,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:08" (1/1) ... [2023-12-09 15:02:08,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:08" (1/1) ... [2023-12-09 15:02:08,902 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:08" (1/1) ... [2023-12-09 15:02:08,902 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:08" (1/1) ... [2023-12-09 15:02:08,907 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:08" (1/1) ... [2023-12-09 15:02:08,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:08" (1/1) ... [2023-12-09 15:02:08,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:08" (1/1) ... [2023-12-09 15:02:08,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:08" (1/1) ... [2023-12-09 15:02:08,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:02:08,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:02:08,918 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:02:08,918 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:02:08,919 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:08" (1/1) ... [2023-12-09 15:02:08,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:02:08,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:02:08,950 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 15:02:08,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-09 15:02:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:02:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:02:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-09 15:02:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:02:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:02:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-12-09 15:02:08,973 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-12-09 15:02:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:02:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:02:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-09 15:02:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:02:08,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:02:08,974 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 15:02:09,077 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:02:09,078 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:02:09,248 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:02:09,300 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:02:09,300 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-12-09 15:02:09,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:02:09 BoogieIcfgContainer [2023-12-09 15:02:09,302 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:02:09,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:02:09,303 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:02:09,305 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:02:09,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:02:08" (1/3) ... [2023-12-09 15:02:09,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1831784d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:02:09, skipping insertion in model container [2023-12-09 15:02:09,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:02:08" (2/3) ... [2023-12-09 15:02:09,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1831784d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:02:09, skipping insertion in model container [2023-12-09 15:02:09,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:02:09" (3/3) ... [2023-12-09 15:02:09,307 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2023-12-09 15:02:09,320 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:02:09,320 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:02:09,320 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:02:09,363 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-12-09 15:02:09,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 153 transitions, 313 flow [2023-12-09 15:02:09,440 INFO L124 PetriNetUnfolderBase]: 26/235 cut-off events. [2023-12-09 15:02:09,440 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 15:02:09,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 235 events. 26/235 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 668 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 117. Up to 6 conditions per place. [2023-12-09 15:02:09,447 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 153 transitions, 313 flow [2023-12-09 15:02:09,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 148 transitions, 300 flow [2023-12-09 15:02:09,457 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:02:09,464 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;@635fb775, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:02:09,464 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:02:09,489 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:02:09,489 INFO L124 PetriNetUnfolderBase]: 5/102 cut-off events. [2023-12-09 15:02:09,489 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 15:02:09,490 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:02:09,490 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] [2023-12-09 15:02:09,491 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-09 15:02:09,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:02:09,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2037030839, now seen corresponding path program 1 times [2023-12-09 15:02:09,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:02:09,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369427288] [2023-12-09 15:02:09,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:02:09,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:02:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:02:09,909 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 15:02:09,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:02:09,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369427288] [2023-12-09 15:02:09,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369427288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:02:09,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:02:09,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:02:09,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547107738] [2023-12-09 15:02:09,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:02:09,926 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:02:09,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:02:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:02:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:02:09,956 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 153 [2023-12-09 15:02:09,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 148 transitions, 300 flow. Second operand has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 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 15:02:09,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:02:09,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 153 [2023-12-09 15:02:09,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:02:10,293 INFO L124 PetriNetUnfolderBase]: 216/1231 cut-off events. [2023-12-09 15:02:10,293 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 15:02:10,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1666 conditions, 1231 events. 216/1231 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 7384 event pairs, 60 based on Foata normal form. 154/1313 useless extension candidates. Maximal degree in co-relation 1498. Up to 238 conditions per place. [2023-12-09 15:02:10,303 INFO L140 encePairwiseOnDemand]: 133/153 looper letters, 37 selfloop transitions, 8 changer transitions 35/192 dead transitions. [2023-12-09 15:02:10,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 192 transitions, 548 flow [2023-12-09 15:02:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:02:10,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:02:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1062 transitions. [2023-12-09 15:02:10,320 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8676470588235294 [2023-12-09 15:02:10,321 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1062 transitions. [2023-12-09 15:02:10,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1062 transitions. [2023-12-09 15:02:10,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:02:10,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1062 transitions. [2023-12-09 15:02:10,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.75) internal successors, (1062), 8 states have internal predecessors, (1062), 0 states have call successors, (0), 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 15:02:10,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 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 15:02:10,336 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 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 15:02:10,339 INFO L308 CegarLoopForPetriNet]: 137 programPoint places, 6 predicate places. [2023-12-09 15:02:10,339 INFO L500 AbstractCegarLoop]: Abstraction has has 143 places, 192 transitions, 548 flow [2023-12-09 15:02:10,340 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 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 15:02:10,340 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:02:10,341 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] [2023-12-09 15:02:10,341 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:02:10,341 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-09 15:02:10,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:02:10,342 INFO L85 PathProgramCache]: Analyzing trace with hash -590464328, now seen corresponding path program 1 times [2023-12-09 15:02:10,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:02:10,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280853456] [2023-12-09 15:02:10,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:02:10,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:02:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 15:02:10,385 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 15:02:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 15:02:10,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 15:02:10,419 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 15:02:10,420 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-12-09 15:02:10,421 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-12-09 15:02:10,421 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-12-09 15:02:10,421 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:02:10,422 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-09 15:02:10,424 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 15:02:10,424 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-09 15:02:10,452 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:02:10,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 179 transitions, 374 flow [2023-12-09 15:02:10,486 INFO L124 PetriNetUnfolderBase]: 43/369 cut-off events. [2023-12-09 15:02:10,487 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-12-09 15:02:10,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 369 events. 43/369 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1355 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 237. Up to 9 conditions per place. [2023-12-09 15:02:10,488 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 179 transitions, 374 flow [2023-12-09 15:02:10,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 179 transitions, 374 flow [2023-12-09 15:02:10,492 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:02:10,493 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;@635fb775, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:02:10,493 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-09 15:02:10,500 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:02:10,500 INFO L124 PetriNetUnfolderBase]: 5/101 cut-off events. [2023-12-09 15:02:10,500 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 15:02:10,500 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:02:10,500 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] [2023-12-09 15:02:10,500 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-09 15:02:10,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:02:10,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1114017489, now seen corresponding path program 1 times [2023-12-09 15:02:10,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:02:10,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990823955] [2023-12-09 15:02:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:02:10,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:02:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:02:10,656 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 15:02:10,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:02:10,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990823955] [2023-12-09 15:02:10,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990823955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:02:10,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:02:10,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:02:10,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182755751] [2023-12-09 15:02:10,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:02:10,657 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:02:10,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:02:10,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:02:10,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:02:10,659 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 179 [2023-12-09 15:02:10,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 179 transitions, 374 flow. Second operand has 5 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 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 15:02:10,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:02:10,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 179 [2023-12-09 15:02:10,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:02:11,617 INFO L124 PetriNetUnfolderBase]: 2616/9035 cut-off events. [2023-12-09 15:02:11,617 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2023-12-09 15:02:11,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13193 conditions, 9035 events. 2616/9035 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 88772 event pairs, 555 based on Foata normal form. 1483/10006 useless extension candidates. Maximal degree in co-relation 11260. Up to 2179 conditions per place. [2023-12-09 15:02:11,661 INFO L140 encePairwiseOnDemand]: 156/179 looper letters, 109 selfloop transitions, 13 changer transitions 5/258 dead transitions. [2023-12-09 15:02:11,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 258 transitions, 817 flow [2023-12-09 15:02:11,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:02:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:02:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1250 transitions. [2023-12-09 15:02:11,664 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8729050279329609 [2023-12-09 15:02:11,664 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1250 transitions. [2023-12-09 15:02:11,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1250 transitions. [2023-12-09 15:02:11,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:02:11,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1250 transitions. [2023-12-09 15:02:11,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 156.25) internal successors, (1250), 8 states have internal predecessors, (1250), 0 states have call successors, (0), 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 15:02:11,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 179.0) internal successors, (1611), 9 states have internal predecessors, (1611), 0 states have call successors, (0), 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 15:02:11,669 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 179.0) internal successors, (1611), 9 states have internal predecessors, (1611), 0 states have call successors, (0), 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 15:02:11,669 INFO L308 CegarLoopForPetriNet]: 165 programPoint places, 5 predicate places. [2023-12-09 15:02:11,670 INFO L500 AbstractCegarLoop]: Abstraction has has 170 places, 258 transitions, 817 flow [2023-12-09 15:02:11,670 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 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 15:02:11,670 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:02:11,670 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] [2023-12-09 15:02:11,670 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:02:11,671 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-12-09 15:02:11,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:02:11,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1710750516, now seen corresponding path program 1 times [2023-12-09 15:02:11,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:02:11,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184875733] [2023-12-09 15:02:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:02:11,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:02:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 15:02:11,683 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 15:02:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 15:02:11,694 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 15:02:11,694 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 15:02:11,694 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-12-09 15:02:11,694 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-12-09 15:02:11,694 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-12-09 15:02:11,694 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-12-09 15:02:11,695 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:02:11,695 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-09 15:02:11,695 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 15:02:11,695 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-09 15:02:11,711 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-12-09 15:02:11,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 205 transitions, 437 flow [2023-12-09 15:02:11,742 INFO L124 PetriNetUnfolderBase]: 65/538 cut-off events. [2023-12-09 15:02:11,742 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-12-09 15:02:11,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 538 events. 65/538 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2238 event pairs, 1 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 377. Up to 16 conditions per place. [2023-12-09 15:02:11,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 205 transitions, 437 flow [2023-12-09 15:02:11,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 205 transitions, 437 flow [2023-12-09 15:02:11,749 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:02:11,750 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;@635fb775, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:02:11,750 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-12-09 15:02:11,754 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:02:11,754 INFO L124 PetriNetUnfolderBase]: 5/103 cut-off events. [2023-12-09 15:02:11,754 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 15:02:11,754 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:02:11,754 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] [2023-12-09 15:02:11,755 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-09 15:02:11,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:02:11,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2145513959, now seen corresponding path program 1 times [2023-12-09 15:02:11,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:02:11,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914649324] [2023-12-09 15:02:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:02:11,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:02:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:02:11,870 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 15:02:11,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:02:11,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914649324] [2023-12-09 15:02:11,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914649324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:02:11,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:02:11,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:02:11,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959339457] [2023-12-09 15:02:11,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:02:11,872 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:02:11,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:02:11,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:02:11,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:02:11,873 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 205 [2023-12-09 15:02:11,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 205 transitions, 437 flow. Second operand has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 0 states have call successors, (0), 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 15:02:11,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:02:11,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 205 [2023-12-09 15:02:11,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:02:18,238 INFO L124 PetriNetUnfolderBase]: 23962/64590 cut-off events. [2023-12-09 15:02:18,238 INFO L125 PetriNetUnfolderBase]: For 1987/1987 co-relation queries the response was YES. [2023-12-09 15:02:18,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98493 conditions, 64590 events. 23962/64590 cut-off events. For 1987/1987 co-relation queries the response was YES. Maximal size of possible extension queue 1292. Compared 802053 event pairs, 4412 based on Foata normal form. 12478/73796 useless extension candidates. Maximal degree in co-relation 83321. Up to 17420 conditions per place. [2023-12-09 15:02:18,762 INFO L140 encePairwiseOnDemand]: 179/205 looper letters, 159 selfloop transitions, 13 changer transitions 0/318 dead transitions. [2023-12-09 15:02:18,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 318 transitions, 1070 flow [2023-12-09 15:02:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:02:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:02:18,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1436 transitions. [2023-12-09 15:02:18,767 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.875609756097561 [2023-12-09 15:02:18,767 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1436 transitions. [2023-12-09 15:02:18,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1436 transitions. [2023-12-09 15:02:18,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:02:18,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1436 transitions. [2023-12-09 15:02:18,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 179.5) internal successors, (1436), 8 states have internal predecessors, (1436), 0 states have call successors, (0), 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 15:02:18,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 205.0) internal successors, (1845), 9 states have internal predecessors, (1845), 0 states have call successors, (0), 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 15:02:18,774 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 205.0) internal successors, (1845), 9 states have internal predecessors, (1845), 0 states have call successors, (0), 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 15:02:18,775 INFO L308 CegarLoopForPetriNet]: 189 programPoint places, 4 predicate places. [2023-12-09 15:02:18,776 INFO L500 AbstractCegarLoop]: Abstraction has has 193 places, 318 transitions, 1070 flow [2023-12-09 15:02:18,776 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 0 states have call successors, (0), 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 15:02:18,776 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:02:18,776 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:02:18,776 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:02:18,776 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-09 15:02:18,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:02:18,777 INFO L85 PathProgramCache]: Analyzing trace with hash -728762205, now seen corresponding path program 1 times [2023-12-09 15:02:18,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:02:18,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343880327] [2023-12-09 15:02:18,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:02:18,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:02:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:02:18,874 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 15:02:18,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:02:18,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343880327] [2023-12-09 15:02:18,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343880327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:02:18,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:02:18,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:02:18,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352627111] [2023-12-09 15:02:18,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:02:18,877 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:02:18,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:02:18,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:02:18,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:02:18,878 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 205 [2023-12-09 15:02:18,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 318 transitions, 1070 flow. Second operand has 5 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 0 states have call successors, (0), 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 15:02:18,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:02:18,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 205 [2023-12-09 15:02:18,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:02:33,511 INFO L124 PetriNetUnfolderBase]: 60009/151040 cut-off events. [2023-12-09 15:02:33,511 INFO L125 PetriNetUnfolderBase]: For 41017/99050 co-relation queries the response was YES. [2023-12-09 15:02:34,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294466 conditions, 151040 events. 60009/151040 cut-off events. For 41017/99050 co-relation queries the response was YES. Maximal size of possible extension queue 2893. Compared 2015978 event pairs, 13254 based on Foata normal form. 475/142331 useless extension candidates. Maximal degree in co-relation 96831. Up to 41242 conditions per place. [2023-12-09 15:02:35,045 INFO L140 encePairwiseOnDemand]: 197/205 looper letters, 428 selfloop transitions, 21 changer transitions 11/616 dead transitions. [2023-12-09 15:02:35,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 616 transitions, 3273 flow [2023-12-09 15:02:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:02:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:02:35,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1340 transitions. [2023-12-09 15:02:35,048 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8170731707317073 [2023-12-09 15:02:35,049 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1340 transitions. [2023-12-09 15:02:35,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1340 transitions. [2023-12-09 15:02:35,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:02:35,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1340 transitions. [2023-12-09 15:02:35,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 167.5) internal successors, (1340), 8 states have internal predecessors, (1340), 0 states have call successors, (0), 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 15:02:35,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 205.0) internal successors, (1845), 9 states have internal predecessors, (1845), 0 states have call successors, (0), 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 15:02:35,054 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 205.0) internal successors, (1845), 9 states have internal predecessors, (1845), 0 states have call successors, (0), 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 15:02:35,054 INFO L308 CegarLoopForPetriNet]: 189 programPoint places, 11 predicate places. [2023-12-09 15:02:35,054 INFO L500 AbstractCegarLoop]: Abstraction has has 200 places, 616 transitions, 3273 flow [2023-12-09 15:02:35,055 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.8) internal successors, (739), 5 states have internal predecessors, (739), 0 states have call successors, (0), 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 15:02:35,055 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:02:35,055 INFO L233 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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] [2023-12-09 15:02:35,055 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 15:02:35,055 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-12-09 15:02:35,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:02:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash -528633775, now seen corresponding path program 1 times [2023-12-09 15:02:35,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:02:35,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598259869] [2023-12-09 15:02:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:02:35,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:02:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 15:02:35,068 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-09 15:02:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-09 15:02:35,080 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-09 15:02:35,080 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-12-09 15:02:35,080 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-12-09 15:02:35,081 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-12-09 15:02:35,081 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-12-09 15:02:35,081 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-12-09 15:02:35,081 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-12-09 15:02:35,081 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 15:02:35,081 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-09 15:02:35,082 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-09 15:02:35,082 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-12-09 15:02:35,102 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-12-09 15:02:35,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 231 transitions, 502 flow [2023-12-09 15:02:35,163 INFO L124 PetriNetUnfolderBase]: 99/779 cut-off events. [2023-12-09 15:02:35,163 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-12-09 15:02:35,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 779 events. 99/779 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3536 event pairs, 6 based on Foata normal form. 0/676 useless extension candidates. Maximal degree in co-relation 558. Up to 32 conditions per place. [2023-12-09 15:02:35,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 231 transitions, 502 flow [2023-12-09 15:02:35,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 231 transitions, 502 flow [2023-12-09 15:02:35,174 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:02:35,175 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;@635fb775, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:02:35,175 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-09 15:02:35,185 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:02:35,200 INFO L124 PetriNetUnfolderBase]: 5/101 cut-off events. [2023-12-09 15:02:35,200 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 15:02:35,200 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:02:35,200 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] [2023-12-09 15:02:35,200 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-12-09 15:02:35,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:02:35,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1051560737, now seen corresponding path program 1 times [2023-12-09 15:02:35,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:02:35,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982218127] [2023-12-09 15:02:35,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:02:35,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:02:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:02:35,289 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 15:02:35,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:02:35,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982218127] [2023-12-09 15:02:35,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982218127] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:02:35,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:02:35,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:02:35,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481937721] [2023-12-09 15:02:35,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:02:35,290 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:02:35,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:02:35,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:02:35,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:02:35,292 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 231 [2023-12-09 15:02:35,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 231 transitions, 502 flow. Second operand has 5 states, 5 states have (on average 162.6) internal successors, (813), 5 states have internal predecessors, (813), 0 states have call successors, (0), 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 15:02:35,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:02:35,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 231 [2023-12-09 15:02:35,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand