/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 07:53:30,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 07:53:31,068 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-VariableLbe.epf [2023-08-26 07:53:31,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 07:53:31,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 07:53:31,103 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 07:53:31,104 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 07:53:31,104 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 07:53:31,105 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 07:53:31,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 07:53:31,108 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 07:53:31,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 07:53:31,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 07:53:31,110 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 07:53:31,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 07:53:31,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 07:53:31,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 07:53:31,111 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 07:53:31,111 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 07:53:31,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 07:53:31,112 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 07:53:31,112 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 07:53:31,113 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 07:53:31,113 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 07:53:31,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 07:53:31,113 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 07:53:31,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 07:53:31,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:53:31,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 07:53:31,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 07:53:31,115 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 07:53:31,115 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 07:53:31,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 07:53:31,116 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 07:53:31,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 07:53:31,116 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 07:53:31,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 07:53:31,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 07:53:31,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 07:53:31,416 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 07:53:31,417 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 07:53:31,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-08-26 07:53:32,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 07:53:32,933 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 07:53:32,933 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-08-26 07:53:32,952 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a39d8d4/73e34653af844b6bbebcb2d21f6bc895/FLAG2841ce9c4 [2023-08-26 07:53:32,964 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71a39d8d4/73e34653af844b6bbebcb2d21f6bc895 [2023-08-26 07:53:32,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 07:53:32,969 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 07:53:32,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 07:53:32,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 07:53:32,973 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 07:53:32,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:53:32" (1/1) ... [2023-08-26 07:53:32,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69aa2266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:53:32, skipping insertion in model container [2023-08-26 07:53:32,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:53:32" (1/1) ... [2023-08-26 07:53:33,037 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 07:53:33,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:53:33,472 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 07:53:33,501 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:53:33,503 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:53:33,509 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-26 07:53:33,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:53:33,604 INFO L206 MainTranslator]: Completed translation [2023-08-26 07:53:33,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:53:33 WrapperNode [2023-08-26 07:53:33,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 07:53:33,605 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 07:53:33,605 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 07:53:33,606 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 07:53:33,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:53:33" (1/1) ... [2023-08-26 07:53:33,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:53:33" (1/1) ... [2023-08-26 07:53:33,671 INFO L138 Inliner]: procedures = 270, calls = 42, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 262 [2023-08-26 07:53:33,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 07:53:33,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 07:53:33,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 07:53:33,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 07:53:33,679 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:53:33" (1/1) ... [2023-08-26 07:53:33,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:53:33" (1/1) ... [2023-08-26 07:53:33,685 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:53:33" (1/1) ... [2023-08-26 07:53:33,685 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:53:33" (1/1) ... [2023-08-26 07:53:33,700 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:53:33" (1/1) ... [2023-08-26 07:53:33,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:53:33" (1/1) ... [2023-08-26 07:53:33,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:53:33" (1/1) ... [2023-08-26 07:53:33,708 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:53:33" (1/1) ... [2023-08-26 07:53:33,712 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 07:53:33,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 07:53:33,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 07:53:33,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 07:53:33,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:53:33" (1/1) ... [2023-08-26 07:53:33,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:53:33,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:53:33,742 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) [2023-08-26 07:53:33,756 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 [2023-08-26 07:53:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 07:53:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 07:53:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 07:53:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 07:53:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 07:53:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 07:53:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 07:53:33,777 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 07:53:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 07:53:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 07:53:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 07:53:33,779 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 07:53:33,963 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 07:53:33,967 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 07:53:34,351 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 07:53:34,358 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 07:53:34,359 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-26 07:53:34,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:53:34 BoogieIcfgContainer [2023-08-26 07:53:34,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 07:53:34,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 07:53:34,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 07:53:34,365 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 07:53:34,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 07:53:32" (1/3) ... [2023-08-26 07:53:34,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66257051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:53:34, skipping insertion in model container [2023-08-26 07:53:34,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:53:33" (2/3) ... [2023-08-26 07:53:34,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66257051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:53:34, skipping insertion in model container [2023-08-26 07:53:34,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:53:34" (3/3) ... [2023-08-26 07:53:34,368 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2023-08-26 07:53:34,381 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 07:53:34,381 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-26 07:53:34,381 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 07:53:34,487 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 07:53:34,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 275 transitions, 558 flow [2023-08-26 07:53:34,637 INFO L124 PetriNetUnfolderBase]: 48/391 cut-off events. [2023-08-26 07:53:34,637 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:53:34,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 391 events. 48/391 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1646 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2023-08-26 07:53:34,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 275 transitions, 558 flow [2023-08-26 07:53:34,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 275 transitions, 558 flow [2023-08-26 07:53:34,668 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:53:34,683 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 275 transitions, 558 flow [2023-08-26 07:53:34,687 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 275 transitions, 558 flow [2023-08-26 07:53:34,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 275 transitions, 558 flow [2023-08-26 07:53:34,773 INFO L124 PetriNetUnfolderBase]: 48/391 cut-off events. [2023-08-26 07:53:34,773 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:53:34,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 391 events. 48/391 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1646 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2023-08-26 07:53:34,792 INFO L119 LiptonReduction]: Number of co-enabled transitions 25864 [2023-08-26 07:53:37,851 INFO L134 LiptonReduction]: Checked pairs total: 113508 [2023-08-26 07:53:37,852 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-08-26 07:53:37,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:53:37,877 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1956931f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:53:37,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-26 07:53:37,883 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:53:37,884 INFO L124 PetriNetUnfolderBase]: 14/75 cut-off events. [2023-08-26 07:53:37,884 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:53:37,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:53:37,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:53:37,885 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:53:37,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:53:37,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1021694442, now seen corresponding path program 1 times [2023-08-26 07:53:37,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:53:37,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585957299] [2023-08-26 07:53:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:37,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:53:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:38,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:53:38,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:53:38,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585957299] [2023-08-26 07:53:38,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585957299] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:53:38,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:53:38,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:53:38,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411267787] [2023-08-26 07:53:38,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:53:38,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:53:38,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:53:38,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:53:38,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:53:38,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 458 [2023-08-26 07:53:38,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 134 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:38,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:53:38,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 458 [2023-08-26 07:53:38,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:53:38,402 INFO L124 PetriNetUnfolderBase]: 440/1670 cut-off events. [2023-08-26 07:53:38,402 INFO L125 PetriNetUnfolderBase]: For 3/4 co-relation queries the response was YES. [2023-08-26 07:53:38,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 1670 events. 440/1670 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12290 event pairs, 396 based on Foata normal form. 172/1650 useless extension candidates. Maximal degree in co-relation 2436. Up to 860 conditions per place. [2023-08-26 07:53:38,411 INFO L140 encePairwiseOnDemand]: 434/458 looper letters, 45 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-08-26 07:53:38,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 114 transitions, 330 flow [2023-08-26 07:53:38,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:53:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:53:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2023-08-26 07:53:38,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611353711790393 [2023-08-26 07:53:38,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 771 transitions. [2023-08-26 07:53:38,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 771 transitions. [2023-08-26 07:53:38,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:53:38,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 771 transitions. [2023-08-26 07:53:38,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:38,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:38,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:38,443 INFO L175 Difference]: Start difference. First operand has 112 places, 134 transitions, 276 flow. Second operand 3 states and 771 transitions. [2023-08-26 07:53:38,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 114 transitions, 330 flow [2023-08-26 07:53:38,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 114 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:53:38,449 INFO L231 Difference]: Finished difference. Result has 115 places, 114 transitions, 246 flow [2023-08-26 07:53:38,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2023-08-26 07:53:38,453 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 3 predicate places. [2023-08-26 07:53:38,454 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 246 flow [2023-08-26 07:53:38,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:38,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:53:38,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:53:38,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 07:53:38,455 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:53:38,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:53:38,455 INFO L85 PathProgramCache]: Analyzing trace with hash 58107970, now seen corresponding path program 1 times [2023-08-26 07:53:38,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:53:38,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059600679] [2023-08-26 07:53:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:38,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:53:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:53:38,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:53:38,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059600679] [2023-08-26 07:53:38,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059600679] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:53:38,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56183721] [2023-08-26 07:53:38,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:38,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:53:38,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:53:38,561 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) [2023-08-26 07:53:38,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 07:53:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:38,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-26 07:53:38,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:53:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:53:38,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:53:38,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56183721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:53:38,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:53:38,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-26 07:53:38,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075376775] [2023-08-26 07:53:38,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:53:38,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:53:38,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:53:38,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:53:38,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:53:38,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 458 [2023-08-26 07:53:38,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:38,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:53:38,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 458 [2023-08-26 07:53:38,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:53:38,956 INFO L124 PetriNetUnfolderBase]: 438/1610 cut-off events. [2023-08-26 07:53:38,956 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 07:53:38,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2473 conditions, 1610 events. 438/1610 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 11658 event pairs, 315 based on Foata normal form. 0/1419 useless extension candidates. Maximal degree in co-relation 2461. Up to 822 conditions per place. [2023-08-26 07:53:38,964 INFO L140 encePairwiseOnDemand]: 455/458 looper letters, 64 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2023-08-26 07:53:38,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 133 transitions, 416 flow [2023-08-26 07:53:38,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:53:38,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:53:38,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 768 transitions. [2023-08-26 07:53:38,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5589519650655022 [2023-08-26 07:53:38,967 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 768 transitions. [2023-08-26 07:53:38,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 768 transitions. [2023-08-26 07:53:38,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:53:38,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 768 transitions. [2023-08-26 07:53:38,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:38,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:38,973 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:38,973 INFO L175 Difference]: Start difference. First operand has 115 places, 114 transitions, 246 flow. Second operand 3 states and 768 transitions. [2023-08-26 07:53:38,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 133 transitions, 416 flow [2023-08-26 07:53:38,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 133 transitions, 412 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 07:53:38,977 INFO L231 Difference]: Finished difference. Result has 117 places, 114 transitions, 250 flow [2023-08-26 07:53:38,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=117, PETRI_TRANSITIONS=114} [2023-08-26 07:53:38,978 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 5 predicate places. [2023-08-26 07:53:38,978 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 114 transitions, 250 flow [2023-08-26 07:53:38,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:38,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:53:38,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:53:38,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 07:53:39,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:53:39,188 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:53:39,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:53:39,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1169161537, now seen corresponding path program 1 times [2023-08-26 07:53:39,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:53:39,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130918453] [2023-08-26 07:53:39,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:39,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:53:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:53:39,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:53:39,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130918453] [2023-08-26 07:53:39,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130918453] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:53:39,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244351282] [2023-08-26 07:53:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:39,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:53:39,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:53:39,316 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) [2023-08-26 07:53:39,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 07:53:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:39,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:53:39,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:53:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:53:39,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:53:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:53:39,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244351282] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:53:39,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:53:39,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:53:39,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735593349] [2023-08-26 07:53:39,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:53:39,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:53:39,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:53:39,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:53:39,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:53:39,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 458 [2023-08-26 07:53:39,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 114 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 235.85714285714286) internal successors, (1651), 7 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:39,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:53:39,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 458 [2023-08-26 07:53:39,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:53:39,708 INFO L124 PetriNetUnfolderBase]: 438/1618 cut-off events. [2023-08-26 07:53:39,708 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-26 07:53:39,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 1618 events. 438/1618 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 11780 event pairs, 396 based on Foata normal form. 3/1442 useless extension candidates. Maximal degree in co-relation 2511. Up to 842 conditions per place. [2023-08-26 07:53:39,718 INFO L140 encePairwiseOnDemand]: 455/458 looper letters, 45 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2023-08-26 07:53:39,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 117 transitions, 362 flow [2023-08-26 07:53:39,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:53:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:53:39,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1457 transitions. [2023-08-26 07:53:39,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5302037845705968 [2023-08-26 07:53:39,722 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1457 transitions. [2023-08-26 07:53:39,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1457 transitions. [2023-08-26 07:53:39,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:53:39,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1457 transitions. [2023-08-26 07:53:39,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.83333333333334) internal successors, (1457), 6 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:39,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:39,733 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:39,734 INFO L175 Difference]: Start difference. First operand has 117 places, 114 transitions, 250 flow. Second operand 6 states and 1457 transitions. [2023-08-26 07:53:39,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 117 transitions, 362 flow [2023-08-26 07:53:39,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 117 transitions, 358 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:53:39,740 INFO L231 Difference]: Finished difference. Result has 123 places, 117 transitions, 282 flow [2023-08-26 07:53:39,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=123, PETRI_TRANSITIONS=117} [2023-08-26 07:53:39,741 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 11 predicate places. [2023-08-26 07:53:39,741 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 117 transitions, 282 flow [2023-08-26 07:53:39,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 235.85714285714286) internal successors, (1651), 7 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:39,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:53:39,743 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:53:39,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 07:53:39,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-26 07:53:39,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:53:39,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:53:39,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1841468163, now seen corresponding path program 2 times [2023-08-26 07:53:39,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:53:39,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456049749] [2023-08-26 07:53:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:39,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:53:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:40,058 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:53:40,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:53:40,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456049749] [2023-08-26 07:53:40,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456049749] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:53:40,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785701532] [2023-08-26 07:53:40,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 07:53:40,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:53:40,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:53:40,061 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) [2023-08-26 07:53:40,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 07:53:40,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 07:53:40,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:53:40,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 07:53:40,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:53:40,205 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 07:53:40,223 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-26 07:53:40,254 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:53:40,257 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-26 07:53:40,300 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:53:40,300 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-26 07:53:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 07:53:40,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:53:40,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785701532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:53:40,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:53:40,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-26 07:53:40,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653926467] [2023-08-26 07:53:40,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:53:40,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:53:40,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:53:40,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:53:40,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-26 07:53:40,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 458 [2023-08-26 07:53:40,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 117 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:40,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:53:40,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 458 [2023-08-26 07:53:40,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:53:41,975 INFO L124 PetriNetUnfolderBase]: 4248/8967 cut-off events. [2023-08-26 07:53:41,975 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-26 07:53:41,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17821 conditions, 8967 events. 4248/8967 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 63487 event pairs, 1570 based on Foata normal form. 0/7528 useless extension candidates. Maximal degree in co-relation 17786. Up to 3956 conditions per place. [2023-08-26 07:53:42,025 INFO L140 encePairwiseOnDemand]: 429/458 looper letters, 348 selfloop transitions, 56 changer transitions 0/412 dead transitions. [2023-08-26 07:53:42,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 412 transitions, 1704 flow [2023-08-26 07:53:42,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:53:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:53:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1351 transitions. [2023-08-26 07:53:42,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49163027656477437 [2023-08-26 07:53:42,033 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1351 transitions. [2023-08-26 07:53:42,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1351 transitions. [2023-08-26 07:53:42,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:53:42,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1351 transitions. [2023-08-26 07:53:42,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 225.16666666666666) internal successors, (1351), 6 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:42,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:42,042 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:42,042 INFO L175 Difference]: Start difference. First operand has 123 places, 117 transitions, 282 flow. Second operand 6 states and 1351 transitions. [2023-08-26 07:53:42,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 412 transitions, 1704 flow [2023-08-26 07:53:42,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 412 transitions, 1690 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 07:53:42,050 INFO L231 Difference]: Finished difference. Result has 131 places, 172 transitions, 639 flow [2023-08-26 07:53:42,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=639, PETRI_PLACES=131, PETRI_TRANSITIONS=172} [2023-08-26 07:53:42,051 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 19 predicate places. [2023-08-26 07:53:42,051 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 172 transitions, 639 flow [2023-08-26 07:53:42,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:42,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:53:42,052 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:53:42,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 07:53:42,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:53:42,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:53:42,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:53:42,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1841468388, now seen corresponding path program 1 times [2023-08-26 07:53:42,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:53:42,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832846098] [2023-08-26 07:53:42,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:42,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:53:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:53:42,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:53:42,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832846098] [2023-08-26 07:53:42,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832846098] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:53:42,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152479714] [2023-08-26 07:53:42,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:42,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:53:42,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:53:42,360 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) [2023-08-26 07:53:42,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 07:53:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:42,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 07:53:42,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:53:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:53:42,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:53:42,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:53:42,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152479714] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:53:42,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:53:42,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 07:53:42,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554782192] [2023-08-26 07:53:42,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:53:42,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 07:53:42,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:53:42,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 07:53:42,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 07:53:42,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 458 [2023-08-26 07:53:42,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 172 transitions, 639 flow. Second operand has 13 states, 13 states have (on average 235.53846153846155) internal successors, (3062), 13 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:42,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:53:42,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 458 [2023-08-26 07:53:42,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:53:43,005 INFO L124 PetriNetUnfolderBase]: 998/4086 cut-off events. [2023-08-26 07:53:43,005 INFO L125 PetriNetUnfolderBase]: For 853/990 co-relation queries the response was YES. [2023-08-26 07:53:43,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7928 conditions, 4086 events. 998/4086 cut-off events. For 853/990 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 36186 event pairs, 555 based on Foata normal form. 82/3689 useless extension candidates. Maximal degree in co-relation 7871. Up to 1950 conditions per place. [2023-08-26 07:53:43,033 INFO L140 encePairwiseOnDemand]: 455/458 looper letters, 73 selfloop transitions, 11 changer transitions 0/178 dead transitions. [2023-08-26 07:53:43,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 178 transitions, 843 flow [2023-08-26 07:53:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 07:53:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 07:53:43,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2870 transitions. [2023-08-26 07:53:43,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522197962154294 [2023-08-26 07:53:43,040 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2870 transitions. [2023-08-26 07:53:43,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2870 transitions. [2023-08-26 07:53:43,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:53:43,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2870 transitions. [2023-08-26 07:53:43,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 239.16666666666666) internal successors, (2870), 12 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:43,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 458.0) internal successors, (5954), 13 states have internal predecessors, (5954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:43,056 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 458.0) internal successors, (5954), 13 states have internal predecessors, (5954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:43,056 INFO L175 Difference]: Start difference. First operand has 131 places, 172 transitions, 639 flow. Second operand 12 states and 2870 transitions. [2023-08-26 07:53:43,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 178 transitions, 843 flow [2023-08-26 07:53:43,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 178 transitions, 843 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:53:43,063 INFO L231 Difference]: Finished difference. Result has 148 places, 178 transitions, 723 flow [2023-08-26 07:53:43,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=723, PETRI_PLACES=148, PETRI_TRANSITIONS=178} [2023-08-26 07:53:43,064 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 36 predicate places. [2023-08-26 07:53:43,065 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 178 transitions, 723 flow [2023-08-26 07:53:43,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 235.53846153846155) internal successors, (3062), 13 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:43,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:53:43,066 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:53:43,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 07:53:43,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:53:43,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:53:43,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:53:43,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1393769060, now seen corresponding path program 2 times [2023-08-26 07:53:43,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:53:43,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20533743] [2023-08-26 07:53:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:43,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:53:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:53:43,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:53:43,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20533743] [2023-08-26 07:53:43,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20533743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:53:43,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:53:43,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:53:43,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086928700] [2023-08-26 07:53:43,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:53:43,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:53:43,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:53:43,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:53:43,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:53:43,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 458 [2023-08-26 07:53:43,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 178 transitions, 723 flow. Second operand has 7 states, 7 states have (on average 139.85714285714286) internal successors, (979), 7 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:43,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:53:43,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 458 [2023-08-26 07:53:43,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:53:45,111 INFO L124 PetriNetUnfolderBase]: 4930/10415 cut-off events. [2023-08-26 07:53:45,112 INFO L125 PetriNetUnfolderBase]: For 4224/4224 co-relation queries the response was YES. [2023-08-26 07:53:45,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26356 conditions, 10415 events. 4930/10415 cut-off events. For 4224/4224 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 75725 event pairs, 2177 based on Foata normal form. 0/9197 useless extension candidates. Maximal degree in co-relation 26274. Up to 8002 conditions per place. [2023-08-26 07:53:45,177 INFO L140 encePairwiseOnDemand]: 450/458 looper letters, 315 selfloop transitions, 14 changer transitions 11/348 dead transitions. [2023-08-26 07:53:45,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 348 transitions, 1956 flow [2023-08-26 07:53:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 07:53:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 07:53:45,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1215 transitions. [2023-08-26 07:53:45,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3789769182782283 [2023-08-26 07:53:45,182 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1215 transitions. [2023-08-26 07:53:45,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1215 transitions. [2023-08-26 07:53:45,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:53:45,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1215 transitions. [2023-08-26 07:53:45,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 173.57142857142858) internal successors, (1215), 7 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:45,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 458.0) internal successors, (3664), 8 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:45,190 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 458.0) internal successors, (3664), 8 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:45,190 INFO L175 Difference]: Start difference. First operand has 148 places, 178 transitions, 723 flow. Second operand 7 states and 1215 transitions. [2023-08-26 07:53:45,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 348 transitions, 1956 flow [2023-08-26 07:53:45,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 348 transitions, 1908 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-26 07:53:45,209 INFO L231 Difference]: Finished difference. Result has 154 places, 190 transitions, 801 flow [2023-08-26 07:53:45,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=801, PETRI_PLACES=154, PETRI_TRANSITIONS=190} [2023-08-26 07:53:45,210 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 42 predicate places. [2023-08-26 07:53:45,210 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 190 transitions, 801 flow [2023-08-26 07:53:45,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.85714285714286) internal successors, (979), 7 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:45,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:53:45,211 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:53:45,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 07:53:45,211 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:53:45,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:53:45,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1162893375, now seen corresponding path program 1 times [2023-08-26 07:53:45,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:53:45,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887334864] [2023-08-26 07:53:45,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:45,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:53:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:45,261 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:53:45,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:53:45,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887334864] [2023-08-26 07:53:45,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887334864] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:53:45,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401859531] [2023-08-26 07:53:45,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:45,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:53:45,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:53:45,263 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) [2023-08-26 07:53:45,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 07:53:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:45,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:53:45,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:53:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:53:45,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:53:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:53:45,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401859531] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:53:45,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:53:45,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-26 07:53:45,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729607380] [2023-08-26 07:53:45,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:53:45,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:53:45,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:53:45,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:53:45,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:53:45,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 458 [2023-08-26 07:53:45,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 190 transitions, 801 flow. Second operand has 7 states, 7 states have (on average 236.57142857142858) internal successors, (1656), 7 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:45,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:53:45,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 458 [2023-08-26 07:53:45,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:53:45,452 INFO L124 PetriNetUnfolderBase]: 37/153 cut-off events. [2023-08-26 07:53:45,452 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-08-26 07:53:45,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 153 events. 37/153 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 382 event pairs, 0 based on Foata normal form. 19/163 useless extension candidates. Maximal degree in co-relation 378. Up to 74 conditions per place. [2023-08-26 07:53:45,453 INFO L140 encePairwiseOnDemand]: 455/458 looper letters, 35 selfloop transitions, 2 changer transitions 20/79 dead transitions. [2023-08-26 07:53:45,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 79 transitions, 405 flow [2023-08-26 07:53:45,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:53:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:53:45,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 978 transitions. [2023-08-26 07:53:45,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338427947598253 [2023-08-26 07:53:45,456 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 978 transitions. [2023-08-26 07:53:45,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 978 transitions. [2023-08-26 07:53:45,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:53:45,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 978 transitions. [2023-08-26 07:53:45,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 244.5) internal successors, (978), 4 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:45,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 458.0) internal successors, (2290), 5 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:45,462 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 458.0) internal successors, (2290), 5 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:45,462 INFO L175 Difference]: Start difference. First operand has 154 places, 190 transitions, 801 flow. Second operand 4 states and 978 transitions. [2023-08-26 07:53:45,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 79 transitions, 405 flow [2023-08-26 07:53:45,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 311 flow, removed 6 selfloop flow, removed 17 redundant places. [2023-08-26 07:53:45,464 INFO L231 Difference]: Finished difference. Result has 78 places, 48 transitions, 151 flow [2023-08-26 07:53:45,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=78, PETRI_TRANSITIONS=48} [2023-08-26 07:53:45,465 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -34 predicate places. [2023-08-26 07:53:45,465 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 48 transitions, 151 flow [2023-08-26 07:53:45,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 236.57142857142858) internal successors, (1656), 7 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:45,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:53:45,466 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:53:45,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 07:53:45,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:53:45,677 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:53:45,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:53:45,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1644331606, now seen corresponding path program 1 times [2023-08-26 07:53:45,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:53:45,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397469209] [2023-08-26 07:53:45,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:45,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:53:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:53:46,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:53:46,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397469209] [2023-08-26 07:53:46,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397469209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:53:46,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:53:46,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:53:46,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683759564] [2023-08-26 07:53:46,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:53:46,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:53:46,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:53:46,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:53:46,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:53:46,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 458 [2023-08-26 07:53:46,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 48 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 159.16666666666666) internal successors, (955), 6 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:46,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:53:46,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 458 [2023-08-26 07:53:46,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:53:46,093 INFO L124 PetriNetUnfolderBase]: 57/165 cut-off events. [2023-08-26 07:53:46,093 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-08-26 07:53:46,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 165 events. 57/165 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 250 event pairs, 46 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 379. Up to 133 conditions per place. [2023-08-26 07:53:46,094 INFO L140 encePairwiseOnDemand]: 452/458 looper letters, 47 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2023-08-26 07:53:46,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 55 transitions, 277 flow [2023-08-26 07:53:46,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:53:46,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:53:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 979 transitions. [2023-08-26 07:53:46,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3562590975254731 [2023-08-26 07:53:46,098 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 979 transitions. [2023-08-26 07:53:46,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 979 transitions. [2023-08-26 07:53:46,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:53:46,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 979 transitions. [2023-08-26 07:53:46,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.16666666666666) internal successors, (979), 6 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:46,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:46,105 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:46,105 INFO L175 Difference]: Start difference. First operand has 78 places, 48 transitions, 151 flow. Second operand 6 states and 979 transitions. [2023-08-26 07:53:46,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 55 transitions, 277 flow [2023-08-26 07:53:46,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 55 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:53:46,107 INFO L231 Difference]: Finished difference. Result has 68 places, 47 transitions, 156 flow [2023-08-26 07:53:46,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2023-08-26 07:53:46,107 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -44 predicate places. [2023-08-26 07:53:46,108 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 47 transitions, 156 flow [2023-08-26 07:53:46,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.16666666666666) internal successors, (955), 6 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:46,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:53:46,108 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:53:46,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 07:53:46,109 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:53:46,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:53:46,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1126321599, now seen corresponding path program 1 times [2023-08-26 07:53:46,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:53:46,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319738609] [2023-08-26 07:53:46,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:46,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:53:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:53:46,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:53:46,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319738609] [2023-08-26 07:53:46,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319738609] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:53:46,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:53:46,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:53:46,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980122746] [2023-08-26 07:53:46,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:53:46,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:53:46,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:53:46,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:53:46,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:53:46,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 458 [2023-08-26 07:53:46,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 47 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 161.5) internal successors, (969), 6 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:46,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:53:46,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 458 [2023-08-26 07:53:46,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:53:46,730 INFO L124 PetriNetUnfolderBase]: 55/160 cut-off events. [2023-08-26 07:53:46,730 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-26 07:53:46,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 160 events. 55/160 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 242 event pairs, 46 based on Foata normal form. 3/163 useless extension candidates. Maximal degree in co-relation 382. Up to 133 conditions per place. [2023-08-26 07:53:46,731 INFO L140 encePairwiseOnDemand]: 453/458 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2023-08-26 07:53:46,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 54 transitions, 276 flow [2023-08-26 07:53:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:53:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:53:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 978 transitions. [2023-08-26 07:53:46,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3558951965065502 [2023-08-26 07:53:46,734 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 978 transitions. [2023-08-26 07:53:46,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 978 transitions. [2023-08-26 07:53:46,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:53:46,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 978 transitions. [2023-08-26 07:53:46,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:46,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:46,741 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:46,741 INFO L175 Difference]: Start difference. First operand has 68 places, 47 transitions, 156 flow. Second operand 6 states and 978 transitions. [2023-08-26 07:53:46,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 54 transitions, 276 flow [2023-08-26 07:53:46,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 54 transitions, 266 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 07:53:46,743 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2023-08-26 07:53:46,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2023-08-26 07:53:46,743 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -45 predicate places. [2023-08-26 07:53:46,743 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2023-08-26 07:53:46,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.5) internal successors, (969), 6 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:46,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (18 of 19 remaining) [2023-08-26 07:53:46,746 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-08-26 07:53:46,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-08-26 07:53:46,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-08-26 07:53:46,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-08-26 07:53:46,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (13 of 19 remaining) [2023-08-26 07:53:46,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-08-26 07:53:46,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-08-26 07:53:46,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-08-26 07:53:46,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-08-26 07:53:46,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-08-26 07:53:46,748 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONASSERT (7 of 19 remaining) [2023-08-26 07:53:46,748 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-08-26 07:53:46,748 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-08-26 07:53:46,748 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONASSERT (4 of 19 remaining) [2023-08-26 07:53:46,748 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-08-26 07:53:46,748 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-08-26 07:53:46,748 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-08-26 07:53:46,748 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-08-26 07:53:46,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 07:53:46,749 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2023-08-26 07:53:46,750 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:53:46,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 275 transitions, 558 flow [2023-08-26 07:53:46,782 INFO L124 PetriNetUnfolderBase]: 48/391 cut-off events. [2023-08-26 07:53:46,783 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:53:46,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 391 events. 48/391 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1646 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2023-08-26 07:53:46,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 275 transitions, 558 flow [2023-08-26 07:53:46,786 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 270 transitions, 545 flow [2023-08-26 07:53:46,787 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:53:46,787 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 270 transitions, 545 flow [2023-08-26 07:53:46,787 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 270 transitions, 545 flow [2023-08-26 07:53:46,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 270 transitions, 545 flow [2023-08-26 07:53:46,813 INFO L124 PetriNetUnfolderBase]: 47/386 cut-off events. [2023-08-26 07:53:46,813 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:53:46,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 386 events. 47/386 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1580 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2023-08-26 07:53:46,825 INFO L119 LiptonReduction]: Number of co-enabled transitions 25864 [2023-08-26 07:53:49,481 INFO L134 LiptonReduction]: Checked pairs total: 114541 [2023-08-26 07:53:49,482 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-08-26 07:53:49,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:53:49,484 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1956931f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:53:49,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:53:49,488 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:53:49,488 INFO L124 PetriNetUnfolderBase]: 9/40 cut-off events. [2023-08-26 07:53:49,488 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:53:49,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:53:49,489 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-26 07:53:49,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:53:49,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:53:49,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1032765349, now seen corresponding path program 1 times [2023-08-26 07:53:49,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:53:49,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979422967] [2023-08-26 07:53:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:49,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:53:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:53:49,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:53:49,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979422967] [2023-08-26 07:53:49,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979422967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:53:49,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:53:49,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:53:49,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455266789] [2023-08-26 07:53:49,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:53:49,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:53:49,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:53:49,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:53:49,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:53:49,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 461 [2023-08-26 07:53:49,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 133 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:49,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:53:49,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 461 [2023-08-26 07:53:49,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:53:49,659 INFO L124 PetriNetUnfolderBase]: 420/1608 cut-off events. [2023-08-26 07:53:49,659 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:53:49,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 1608 events. 420/1608 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 11770 event pairs, 378 based on Foata normal form. 184/1625 useless extension candidates. Maximal degree in co-relation 2340. Up to 820 conditions per place. [2023-08-26 07:53:49,663 INFO L140 encePairwiseOnDemand]: 435/461 looper letters, 24 selfloop transitions, 2 changer transitions 54/111 dead transitions. [2023-08-26 07:53:49,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 111 transitions, 315 flow [2023-08-26 07:53:49,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:53:49,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:53:49,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 770 transitions. [2023-08-26 07:53:49,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556760665220535 [2023-08-26 07:53:49,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 770 transitions. [2023-08-26 07:53:49,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 770 transitions. [2023-08-26 07:53:49,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:53:49,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 770 transitions. [2023-08-26 07:53:49,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:49,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:49,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:49,670 INFO L175 Difference]: Start difference. First operand has 111 places, 133 transitions, 271 flow. Second operand 3 states and 770 transitions. [2023-08-26 07:53:49,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 111 transitions, 315 flow [2023-08-26 07:53:49,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 111 transitions, 315 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:53:49,671 INFO L231 Difference]: Finished difference. Result has 113 places, 57 transitions, 129 flow [2023-08-26 07:53:49,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=113, PETRI_TRANSITIONS=57} [2023-08-26 07:53:49,673 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 2 predicate places. [2023-08-26 07:53:49,673 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 57 transitions, 129 flow [2023-08-26 07:53:49,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:49,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:53:49,673 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-26 07:53:49,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 07:53:49,674 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:53:49,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:53:49,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1647518810, now seen corresponding path program 1 times [2023-08-26 07:53:49,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:53:49,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022549304] [2023-08-26 07:53:49,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:49,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:53:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:53:49,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:53:49,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022549304] [2023-08-26 07:53:49,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022549304] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:53:49,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32543194] [2023-08-26 07:53:49,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:49,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:53:49,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:53:49,702 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) [2023-08-26 07:53:49,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 07:53:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:49,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:53:49,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:53:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:53:49,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:53:49,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:53:49,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32543194] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:53:49,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:53:49,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:53:49,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860706691] [2023-08-26 07:53:49,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:53:49,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:53:49,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:53:49,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:53:49,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:53:49,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 461 [2023-08-26 07:53:49,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 57 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 235.57142857142858) internal successors, (1649), 7 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:49,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:53:49,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 461 [2023-08-26 07:53:49,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:53:49,874 INFO L124 PetriNetUnfolderBase]: 59/261 cut-off events. [2023-08-26 07:53:49,875 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:53:49,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 261 events. 59/261 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 909 event pairs, 54 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 405. Up to 136 conditions per place. [2023-08-26 07:53:49,875 INFO L140 encePairwiseOnDemand]: 458/461 looper letters, 24 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-26 07:53:49,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 199 flow [2023-08-26 07:53:49,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:53:49,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:53:49,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1436 transitions. [2023-08-26 07:53:49,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191612436731743 [2023-08-26 07:53:49,879 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1436 transitions. [2023-08-26 07:53:49,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1436 transitions. [2023-08-26 07:53:49,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:53:49,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1436 transitions. [2023-08-26 07:53:49,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 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) [2023-08-26 07:53:49,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:49,886 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:49,886 INFO L175 Difference]: Start difference. First operand has 113 places, 57 transitions, 129 flow. Second operand 6 states and 1436 transitions. [2023-08-26 07:53:49,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 199 flow [2023-08-26 07:53:49,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 195 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 07:53:49,888 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 161 flow [2023-08-26 07:53:49,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-08-26 07:53:49,889 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -44 predicate places. [2023-08-26 07:53:49,889 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 161 flow [2023-08-26 07:53:49,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 235.57142857142858) internal successors, (1649), 7 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:49,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:53:49,889 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-26 07:53:49,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 07:53:50,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:53:50,095 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:53:50,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:53:50,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1781938149, now seen corresponding path program 2 times [2023-08-26 07:53:50,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:53:50,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279157369] [2023-08-26 07:53:50,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:50,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:53:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:53:50,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:53:50,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279157369] [2023-08-26 07:53:50,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279157369] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:53:50,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773529908] [2023-08-26 07:53:50,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 07:53:50,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:53:50,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:53:50,149 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) [2023-08-26 07:53:50,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 07:53:50,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 07:53:50,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:53:50,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 07:53:50,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:53:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:53:50,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:53:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:53:50,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773529908] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:53:50,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:53:50,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 07:53:50,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259963563] [2023-08-26 07:53:50,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:53:50,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 07:53:50,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:53:50,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 07:53:50,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 07:53:50,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 461 [2023-08-26 07:53:50,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 161 flow. Second operand has 13 states, 13 states have (on average 235.30769230769232) internal successors, (3059), 13 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:50,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:53:50,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 461 [2023-08-26 07:53:50,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:53:50,378 INFO L124 PetriNetUnfolderBase]: 59/267 cut-off events. [2023-08-26 07:53:50,379 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-26 07:53:50,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 267 events. 59/267 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 909 event pairs, 54 based on Foata normal form. 6/245 useless extension candidates. Maximal degree in co-relation 396. Up to 136 conditions per place. [2023-08-26 07:53:50,379 INFO L140 encePairwiseOnDemand]: 458/461 looper letters, 24 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2023-08-26 07:53:50,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 66 transitions, 267 flow [2023-08-26 07:53:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 07:53:50,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 07:53:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2849 transitions. [2023-08-26 07:53:50,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515003615328995 [2023-08-26 07:53:50,386 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2849 transitions. [2023-08-26 07:53:50,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2849 transitions. [2023-08-26 07:53:50,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:53:50,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2849 transitions. [2023-08-26 07:53:50,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 237.41666666666666) internal successors, (2849), 12 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:50,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 461.0) internal successors, (5993), 13 states have internal predecessors, (5993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:50,401 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 461.0) internal successors, (5993), 13 states have internal predecessors, (5993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:50,401 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 161 flow. Second operand 12 states and 2849 transitions. [2023-08-26 07:53:50,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 66 transitions, 267 flow [2023-08-26 07:53:50,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 66 transitions, 253 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 07:53:50,403 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 231 flow [2023-08-26 07:53:50,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=231, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2023-08-26 07:53:50,404 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -28 predicate places. [2023-08-26 07:53:50,404 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 231 flow [2023-08-26 07:53:50,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 235.30769230769232) internal successors, (3059), 13 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:50,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:53:50,405 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-26 07:53:50,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 07:53:50,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:53:50,614 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:53:50,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:53:50,614 INFO L85 PathProgramCache]: Analyzing trace with hash 558305211, now seen corresponding path program 3 times [2023-08-26 07:53:50,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:53:50,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526081189] [2023-08-26 07:53:50,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:50,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:53:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:53:50,643 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:53:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:53:50,682 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:53:50,682 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:53:50,683 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:53:50,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 07:53:50,684 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-26 07:53:50,684 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:53:50,685 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:53:50,685 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 07:53:50,741 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 07:53:50,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 383 transitions, 784 flow [2023-08-26 07:53:50,815 INFO L124 PetriNetUnfolderBase]: 80/646 cut-off events. [2023-08-26 07:53:50,815 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:53:50,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 646 events. 80/646 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3301 event pairs, 0 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 393. Up to 12 conditions per place. [2023-08-26 07:53:50,825 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 383 transitions, 784 flow [2023-08-26 07:53:50,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 383 transitions, 784 flow [2023-08-26 07:53:50,830 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:53:50,831 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 340 places, 383 transitions, 784 flow [2023-08-26 07:53:50,831 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 340 places, 383 transitions, 784 flow [2023-08-26 07:53:50,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 383 transitions, 784 flow [2023-08-26 07:53:50,927 INFO L124 PetriNetUnfolderBase]: 80/646 cut-off events. [2023-08-26 07:53:50,927 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:53:50,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 646 events. 80/646 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3301 event pairs, 0 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 393. Up to 12 conditions per place. [2023-08-26 07:53:50,962 INFO L119 LiptonReduction]: Number of co-enabled transitions 76532 [2023-08-26 07:53:54,318 INFO L134 LiptonReduction]: Checked pairs total: 269810 [2023-08-26 07:53:54,318 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-08-26 07:53:54,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:53:54,320 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1956931f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:53:54,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-26 07:53:54,325 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:53:54,325 INFO L124 PetriNetUnfolderBase]: 17/78 cut-off events. [2023-08-26 07:53:54,325 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:53:54,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:53:54,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:53:54,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:53:54,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:53:54,325 INFO L85 PathProgramCache]: Analyzing trace with hash -120737980, now seen corresponding path program 1 times [2023-08-26 07:53:54,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:53:54,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152682930] [2023-08-26 07:53:54,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:54,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:53:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:53:54,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:53:54,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152682930] [2023-08-26 07:53:54,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152682930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:53:54,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:53:54,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:53:54,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594687340] [2023-08-26 07:53:54,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:53:54,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:53:54,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:53:54,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:53:54,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:53:54,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 633 [2023-08-26 07:53:54,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 196 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:54,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:53:54,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 633 [2023-08-26 07:53:54,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:53:57,123 INFO L124 PetriNetUnfolderBase]: 17119/40364 cut-off events. [2023-08-26 07:53:57,124 INFO L125 PetriNetUnfolderBase]: For 182/233 co-relation queries the response was YES. [2023-08-26 07:53:57,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65243 conditions, 40364 events. 17119/40364 cut-off events. For 182/233 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 450808 event pairs, 15876 based on Foata normal form. 4610/40467 useless extension candidates. Maximal degree in co-relation 29495. Up to 24758 conditions per place. [2023-08-26 07:53:57,330 INFO L140 encePairwiseOnDemand]: 599/633 looper letters, 65 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2023-08-26 07:53:57,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 166 transitions, 484 flow [2023-08-26 07:53:57,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:53:57,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:53:57,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1077 transitions. [2023-08-26 07:53:57,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5671406003159558 [2023-08-26 07:53:57,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1077 transitions. [2023-08-26 07:53:57,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1077 transitions. [2023-08-26 07:53:57,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:53:57,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1077 transitions. [2023-08-26 07:53:57,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 359.0) internal successors, (1077), 3 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:57,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:57,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:57,340 INFO L175 Difference]: Start difference. First operand has 164 places, 196 transitions, 410 flow. Second operand 3 states and 1077 transitions. [2023-08-26 07:53:57,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 166 transitions, 484 flow [2023-08-26 07:53:57,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 166 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:53:57,343 INFO L231 Difference]: Finished difference. Result has 167 places, 166 transitions, 360 flow [2023-08-26 07:53:57,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=167, PETRI_TRANSITIONS=166} [2023-08-26 07:53:57,345 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 3 predicate places. [2023-08-26 07:53:57,345 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 166 transitions, 360 flow [2023-08-26 07:53:57,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:57,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:53:57,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:53:57,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 07:53:57,346 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:53:57,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:53:57,346 INFO L85 PathProgramCache]: Analyzing trace with hash -134252717, now seen corresponding path program 1 times [2023-08-26 07:53:57,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:53:57,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023611881] [2023-08-26 07:53:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:57,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:53:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:57,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:53:57,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:53:57,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023611881] [2023-08-26 07:53:57,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023611881] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:53:57,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494627662] [2023-08-26 07:53:57,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:53:57,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:53:57,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:53:57,400 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) [2023-08-26 07:53:57,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 07:53:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:53:57,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-26 07:53:57,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:53:57,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:53:57,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:53:57,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494627662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:53:57,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:53:57,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-26 07:53:57,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472521682] [2023-08-26 07:53:57,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:53:57,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:53:57,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:53:57,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:53:57,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:53:57,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 633 [2023-08-26 07:53:57,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 166 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:53:57,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:53:57,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 633 [2023-08-26 07:53:57,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:54:00,145 INFO L124 PetriNetUnfolderBase]: 16700/40363 cut-off events. [2023-08-26 07:54:00,145 INFO L125 PetriNetUnfolderBase]: For 158/178 co-relation queries the response was YES. [2023-08-26 07:54:00,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65251 conditions, 40363 events. 16700/40363 cut-off events. For 158/178 co-relation queries the response was YES. Maximal size of possible extension queue 1131. Compared 457991 event pairs, 7596 based on Foata normal form. 0/35867 useless extension candidates. Maximal degree in co-relation 65238. Up to 24720 conditions per place. [2023-08-26 07:54:00,342 INFO L140 encePairwiseOnDemand]: 630/633 looper letters, 85 selfloop transitions, 2 changer transitions 0/186 dead transitions. [2023-08-26 07:54:00,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 186 transitions, 574 flow [2023-08-26 07:54:00,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:54:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:54:00,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1065 transitions. [2023-08-26 07:54:00,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5608214849921012 [2023-08-26 07:54:00,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1065 transitions. [2023-08-26 07:54:00,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1065 transitions. [2023-08-26 07:54:00,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:54:00,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1065 transitions. [2023-08-26 07:54:00,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:54:00,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:54:00,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 633.0) internal successors, (2532), 4 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:54:00,351 INFO L175 Difference]: Start difference. First operand has 167 places, 166 transitions, 360 flow. Second operand 3 states and 1065 transitions. [2023-08-26 07:54:00,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 186 transitions, 574 flow [2023-08-26 07:54:00,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 186 transitions, 570 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 07:54:00,354 INFO L231 Difference]: Finished difference. Result has 169 places, 167 transitions, 368 flow [2023-08-26 07:54:00,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=169, PETRI_TRANSITIONS=167} [2023-08-26 07:54:00,355 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 5 predicate places. [2023-08-26 07:54:00,355 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 167 transitions, 368 flow [2023-08-26 07:54:00,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:54:00,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:54:00,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:54:00,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-26 07:54:00,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-26 07:54:00,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:54:00,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:54:00,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1162858928, now seen corresponding path program 1 times [2023-08-26 07:54:00,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:54:00,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500734557] [2023-08-26 07:54:00,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:54:00,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:54:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:54:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:54:00,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:54:00,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500734557] [2023-08-26 07:54:00,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500734557] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:54:00,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639599463] [2023-08-26 07:54:00,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:54:00,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:54:00,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:54:00,602 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) [2023-08-26 07:54:00,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 07:54:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:54:00,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:54:00,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:54:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:54:00,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:54:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:54:00,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639599463] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:54:00,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:54:00,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:54:00,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698617541] [2023-08-26 07:54:00,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:54:00,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:54:00,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:54:00,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:54:00,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:54:00,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 633 [2023-08-26 07:54:00,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 167 transitions, 368 flow. Second operand has 7 states, 7 states have (on average 327.85714285714283) internal successors, (2295), 7 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:54:00,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:54:00,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 633 [2023-08-26 07:54:00,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:54:03,735 INFO L124 PetriNetUnfolderBase]: 17118/40578 cut-off events. [2023-08-26 07:54:03,735 INFO L125 PetriNetUnfolderBase]: For 940/956 co-relation queries the response was YES. [2023-08-26 07:54:03,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66231 conditions, 40578 events. 17118/40578 cut-off events. For 940/956 co-relation queries the response was YES. Maximal size of possible extension queue 1158. Compared 454594 event pairs, 15876 based on Foata normal form. 3/36348 useless extension candidates. Maximal degree in co-relation 66203. Up to 24740 conditions per place. [2023-08-26 07:54:03,924 INFO L140 encePairwiseOnDemand]: 630/633 looper letters, 66 selfloop transitions, 5 changer transitions 0/170 dead transitions. [2023-08-26 07:54:03,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 522 flow [2023-08-26 07:54:03,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:54:03,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:54:03,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2029 transitions. [2023-08-26 07:54:03,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.534228541337546 [2023-08-26 07:54:03,929 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2029 transitions. [2023-08-26 07:54:03,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2029 transitions. [2023-08-26 07:54:03,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:54:03,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2029 transitions. [2023-08-26 07:54:03,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 338.1666666666667) internal successors, (2029), 6 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:54:03,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 633.0) internal successors, (4431), 7 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:54:03,938 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 633.0) internal successors, (4431), 7 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:54:03,938 INFO L175 Difference]: Start difference. First operand has 169 places, 167 transitions, 368 flow. Second operand 6 states and 2029 transitions. [2023-08-26 07:54:03,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 522 flow [2023-08-26 07:54:03,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 170 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:54:03,941 INFO L231 Difference]: Finished difference. Result has 176 places, 170 transitions, 402 flow [2023-08-26 07:54:03,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=176, PETRI_TRANSITIONS=170} [2023-08-26 07:54:03,942 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 12 predicate places. [2023-08-26 07:54:03,942 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 170 transitions, 402 flow [2023-08-26 07:54:03,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 327.85714285714283) internal successors, (2295), 7 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:54:03,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:54:03,943 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:54:03,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 07:54:04,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 07:54:04,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:54:04,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:54:04,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1394954853, now seen corresponding path program 2 times [2023-08-26 07:54:04,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:54:04,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161647054] [2023-08-26 07:54:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:54:04,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:54:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:54:04,214 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:54:04,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:54:04,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161647054] [2023-08-26 07:54:04,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161647054] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:54:04,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352655719] [2023-08-26 07:54:04,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 07:54:04,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:54:04,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:54:04,216 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) [2023-08-26 07:54:04,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 07:54:04,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 07:54:04,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:54:04,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 07:54:04,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:54:04,341 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 07:54:04,355 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-26 07:54:04,377 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:54:04,378 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-26 07:54:04,403 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:54:04,403 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-26 07:54:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 07:54:04,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:54:04,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352655719] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:54:04,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:54:04,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-26 07:54:04,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451096695] [2023-08-26 07:54:04,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:54:04,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:54:04,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:54:04,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:54:04,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-26 07:54:04,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 633 [2023-08-26 07:54:04,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 170 transitions, 402 flow. Second operand has 6 states, 6 states have (on average 216.33333333333334) internal successors, (1298), 6 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:54:04,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:54:04,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 633 [2023-08-26 07:54:04,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:54:56,158 INFO L124 PetriNetUnfolderBase]: 477848/738130 cut-off events. [2023-08-26 07:54:56,158 INFO L125 PetriNetUnfolderBase]: For 7712/7712 co-relation queries the response was YES. [2023-08-26 07:54:57,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465958 conditions, 738130 events. 477848/738130 cut-off events. For 7712/7712 co-relation queries the response was YES. Maximal size of possible extension queue 7987. Compared 6765867 event pairs, 183460 based on Foata normal form. 0/619320 useless extension candidates. Maximal degree in co-relation 1465922. Up to 322961 conditions per place. [2023-08-26 07:54:59,848 INFO L140 encePairwiseOnDemand]: 596/633 looper letters, 560 selfloop transitions, 76 changer transitions 0/649 dead transitions. [2023-08-26 07:54:59,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 649 transitions, 2700 flow [2023-08-26 07:54:59,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:54:59,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:54:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1914 transitions. [2023-08-26 07:54:59,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5039494470774092 [2023-08-26 07:54:59,853 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1914 transitions. [2023-08-26 07:54:59,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1914 transitions. [2023-08-26 07:54:59,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:54:59,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1914 transitions. [2023-08-26 07:54:59,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:54:59,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 633.0) internal successors, (4431), 7 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:54:59,861 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 633.0) internal successors, (4431), 7 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:54:59,861 INFO L175 Difference]: Start difference. First operand has 176 places, 170 transitions, 402 flow. Second operand 6 states and 1914 transitions. [2023-08-26 07:54:59,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 649 transitions, 2700 flow [2023-08-26 07:54:59,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 649 transitions, 2686 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 07:54:59,873 INFO L231 Difference]: Finished difference. Result has 184 places, 247 transitions, 899 flow [2023-08-26 07:54:59,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=899, PETRI_PLACES=184, PETRI_TRANSITIONS=247} [2023-08-26 07:54:59,873 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 20 predicate places. [2023-08-26 07:54:59,874 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 247 transitions, 899 flow [2023-08-26 07:54:59,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 216.33333333333334) internal successors, (1298), 6 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:54:59,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:54:59,874 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:54:59,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 07:55:00,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-26 07:55:00,084 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:55:00,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:55:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1394954456, now seen corresponding path program 1 times [2023-08-26 07:55:00,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:55:00,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578552077] [2023-08-26 07:55:00,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:55:00,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:55:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:55:00,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:55:00,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:55:00,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578552077] [2023-08-26 07:55:00,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578552077] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:55:00,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817748701] [2023-08-26 07:55:00,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:55:00,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:55:00,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:55:00,147 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) [2023-08-26 07:55:00,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 07:55:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:55:00,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 07:55:00,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:55:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:55:00,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:55:00,325 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:55:00,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817748701] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:55:00,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:55:00,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 07:55:00,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155463960] [2023-08-26 07:55:00,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:55:00,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 07:55:00,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:55:00,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 07:55:00,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 07:55:00,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 633 [2023-08-26 07:55:00,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 247 transitions, 899 flow. Second operand has 13 states, 13 states have (on average 327.53846153846155) internal successors, (4258), 13 states have internal predecessors, (4258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:55:00,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:55:00,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 633 [2023-08-26 07:55:00,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:55:14,432 INFO L124 PetriNetUnfolderBase]: 66842/163748 cut-off events. [2023-08-26 07:55:14,432 INFO L125 PetriNetUnfolderBase]: For 28929/33118 co-relation queries the response was YES. [2023-08-26 07:55:15,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327032 conditions, 163748 events. 66842/163748 cut-off events. For 28929/33118 co-relation queries the response was YES. Maximal size of possible extension queue 4142. Compared 2197531 event pairs, 45553 based on Foata normal form. 1323/147829 useless extension candidates. Maximal degree in co-relation 326974. Up to 90937 conditions per place. [2023-08-26 07:55:15,557 INFO L140 encePairwiseOnDemand]: 630/633 looper letters, 90 selfloop transitions, 11 changer transitions 0/253 dead transitions. [2023-08-26 07:55:15,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 253 transitions, 1137 flow [2023-08-26 07:55:15,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 07:55:15,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 07:55:15,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3994 transitions. [2023-08-26 07:55:15,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258030542390731 [2023-08-26 07:55:15,565 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3994 transitions. [2023-08-26 07:55:15,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3994 transitions. [2023-08-26 07:55:15,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:55:15,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3994 transitions. [2023-08-26 07:55:15,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 332.8333333333333) internal successors, (3994), 12 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:55:15,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 633.0) internal successors, (8229), 13 states have internal predecessors, (8229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:55:15,589 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 633.0) internal successors, (8229), 13 states have internal predecessors, (8229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:55:15,589 INFO L175 Difference]: Start difference. First operand has 184 places, 247 transitions, 899 flow. Second operand 12 states and 3994 transitions. [2023-08-26 07:55:15,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 253 transitions, 1137 flow [2023-08-26 07:55:15,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 253 transitions, 1137 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:55:15,710 INFO L231 Difference]: Finished difference. Result has 201 places, 253 transitions, 983 flow [2023-08-26 07:55:15,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=983, PETRI_PLACES=201, PETRI_TRANSITIONS=253} [2023-08-26 07:55:15,711 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 37 predicate places. [2023-08-26 07:55:15,711 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 253 transitions, 983 flow [2023-08-26 07:55:15,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 327.53846153846155) internal successors, (4258), 13 states have internal predecessors, (4258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:55:15,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:55:15,712 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:55:15,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 07:55:15,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 07:55:15,918 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:55:15,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:55:15,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1592015096, now seen corresponding path program 2 times [2023-08-26 07:55:15,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:55:15,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688817478] [2023-08-26 07:55:15,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:55:15,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:55:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:55:16,084 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:55:16,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:55:16,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688817478] [2023-08-26 07:55:16,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688817478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:55:16,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:55:16,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:55:16,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242552869] [2023-08-26 07:55:16,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:55:16,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:55:16,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:55:16,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:55:16,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:55:16,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 633 [2023-08-26 07:55:16,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 253 transitions, 983 flow. Second operand has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:55:16,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:55:16,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 633 [2023-08-26 07:55:16,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:56:35,363 INFO L124 PetriNetUnfolderBase]: 557261/860571 cut-off events. [2023-08-26 07:56:35,363 INFO L125 PetriNetUnfolderBase]: For 312667/312667 co-relation queries the response was YES. [2023-08-26 07:56:39,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2103111 conditions, 860571 events. 557261/860571 cut-off events. For 312667/312667 co-relation queries the response was YES. Maximal size of possible extension queue 9765. Compared 7984044 event pairs, 194948 based on Foata normal form. 0/750656 useless extension candidates. Maximal degree in co-relation 2103028. Up to 699796 conditions per place. [2023-08-26 07:56:42,077 INFO L140 encePairwiseOnDemand]: 624/633 looper letters, 572 selfloop transitions, 21 changer transitions 3/609 dead transitions. [2023-08-26 07:56:42,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 609 transitions, 3225 flow [2023-08-26 07:56:42,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 07:56:42,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 07:56:42,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1816 transitions. [2023-08-26 07:56:42,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40983976529000227 [2023-08-26 07:56:42,081 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1816 transitions. [2023-08-26 07:56:42,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1816 transitions. [2023-08-26 07:56:42,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:56:42,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1816 transitions. [2023-08-26 07:56:42,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 259.42857142857144) internal successors, (1816), 7 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:56:42,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 633.0) internal successors, (5064), 8 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:56:42,087 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 633.0) internal successors, (5064), 8 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:56:42,087 INFO L175 Difference]: Start difference. First operand has 201 places, 253 transitions, 983 flow. Second operand 7 states and 1816 transitions. [2023-08-26 07:56:42,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 609 transitions, 3225 flow [2023-08-26 07:56:51,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 609 transitions, 3177 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-26 07:56:51,922 INFO L231 Difference]: Finished difference. Result has 206 places, 273 transitions, 1102 flow [2023-08-26 07:56:51,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1102, PETRI_PLACES=206, PETRI_TRANSITIONS=273} [2023-08-26 07:56:51,923 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 42 predicate places. [2023-08-26 07:56:51,923 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 273 transitions, 1102 flow [2023-08-26 07:56:51,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:56:51,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:56:51,924 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:56:51,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 07:56:51,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:56:51,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:56:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash 775902499, now seen corresponding path program 1 times [2023-08-26 07:56:51,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:56:51,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184827886] [2023-08-26 07:56:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:56:51,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:56:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:56:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:56:52,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:56:52,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184827886] [2023-08-26 07:56:52,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184827886] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:56:52,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794780628] [2023-08-26 07:56:52,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:56:52,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:56:52,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:56:52,061 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:56:52,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 07:56:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:56:52,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:56:52,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:56:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:56:52,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:56:52,307 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:56:52,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794780628] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:56:52,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:56:52,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-26 07:56:52,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802768632] [2023-08-26 07:56:52,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:56:52,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:56:52,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:56:52,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:56:52,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:56:52,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 633 [2023-08-26 07:56:52,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 273 transitions, 1102 flow. Second operand has 7 states, 7 states have (on average 328.57142857142856) internal successors, (2300), 7 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:56:52,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:56:52,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 633 [2023-08-26 07:56:52,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:56:53,077 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1798] L944-19-->L944-22: Formula: (let ((.cse0 (select |v_#race_285| |v_~#a~0.base_337|)) (.cse1 (* |v_t_funThread2of2ForFork0_~i~0#1_105| 28))) (and (= |v_t_funThread2of2ForFork0_#t~nondet37#1_23| (select .cse0 (+ |v_~#a~0.offset_324| .cse1 1))) (= |v_t_funThread2of2ForFork0_#t~nondet37#1_23| (select .cse0 (+ |v_~#a~0.offset_324| 3 .cse1))) (= |v_t_funThread2of2ForFork0_#t~nondet37#1_23| (select .cse0 (+ |v_~#a~0.offset_324| 2 .cse1))) (= (select .cse0 (+ |v_~#a~0.offset_324| .cse1)) |v_t_funThread2of2ForFork0_#t~nondet37#1_23|))) InVars {#race=|v_#race_285|, t_funThread2of2ForFork0_#t~nondet37#1=|v_t_funThread2of2ForFork0_#t~nondet37#1_23|, ~#a~0.base=|v_~#a~0.base_337|, ~#a~0.offset=|v_~#a~0.offset_324|, t_funThread2of2ForFork0_~i~0#1=|v_t_funThread2of2ForFork0_~i~0#1_105|} OutVars{#race=|v_#race_285|, t_funThread2of2ForFork0_#t~nondet37#1=|v_t_funThread2of2ForFork0_#t~nondet37#1_23|, t_funThread2of2ForFork0_#t~post36#1=|v_t_funThread2of2ForFork0_#t~post36#1_15|, ~#a~0.base=|v_~#a~0.base_337|, ~#a~0.offset=|v_~#a~0.offset_324|, t_funThread2of2ForFork0_~i~0#1=|v_t_funThread2of2ForFork0_~i~0#1_105|, t_funThread2of2ForFork0_#t~mem35#1=|v_t_funThread2of2ForFork0_#t~mem35#1_15|} AuxVars[] AssignedVars[t_funThread2of2ForFork0_#t~post36#1, t_funThread2of2ForFork0_#t~mem35#1][127], [Black: 361#(<= |ULTIMATE.start_main_~i~3#1| 0), Black: 649#(< |ULTIMATE.start_main_~i~1#1| 6), Black: 633#(< |ULTIMATE.start_main_~i~1#1| 10), 263#L953-7true, 95#L944-22true, Black: 645#(< |ULTIMATE.start_main_~i~1#1| 7), Black: 637#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 547#(<= |ULTIMATE.start_main_~i~1#1| 4), Black: 641#(< |ULTIMATE.start_main_~i~1#1| 8), t_funThread1of2ForFork0InUse, t_funThread2of2ForFork0InUse, Black: 523#(= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0), Black: 391#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 535#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0) (= 0 (select (select |#race| |~#a~0.base|) (+ 3 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|))) (= (select (select |#race| |~#a~0.base|) (+ 2 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0)), Black: 345#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 472#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 527#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0)), Black: 468#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 531#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0) (= (select (select |#race| |~#a~0.base|) (+ 2 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0)), 541#true, Black: 667#(and (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#a~0.base|)) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (= |t_funThread1of2ForFork0_#t~mem43#1| 0) (= |~#a~0.base| 4)), Black: 669#(and (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (= |t_funThread1of2ForFork0_#t~mem43#1| 0) (= |~#a~0.base| 4)), Black: 665#(and (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#a~0.base|)) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (= |~#a~0.base| 4)), Black: 663#(= |t_funThread1of2ForFork0_#t~mem43#1| 0), 477#true, 657#true, 783#(< |ULTIMATE.start_main_~i~3#1| 9999), 76#L944-21true]) [2023-08-26 07:56:53,078 INFO L294 olderBase$Statistics]: this new event has 53 ancestors and is cut-off event [2023-08-26 07:56:53,078 INFO L297 olderBase$Statistics]: existing Event has 53 ancestors and is cut-off event [2023-08-26 07:56:53,078 INFO L297 olderBase$Statistics]: existing Event has 53 ancestors and is cut-off event [2023-08-26 07:56:53,078 INFO L297 olderBase$Statistics]: existing Event has 53 ancestors and is cut-off event [2023-08-26 07:56:53,130 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1798] L944-19-->L944-22: Formula: (let ((.cse0 (select |v_#race_285| |v_~#a~0.base_337|)) (.cse1 (* |v_t_funThread2of2ForFork0_~i~0#1_105| 28))) (and (= |v_t_funThread2of2ForFork0_#t~nondet37#1_23| (select .cse0 (+ |v_~#a~0.offset_324| .cse1 1))) (= |v_t_funThread2of2ForFork0_#t~nondet37#1_23| (select .cse0 (+ |v_~#a~0.offset_324| 3 .cse1))) (= |v_t_funThread2of2ForFork0_#t~nondet37#1_23| (select .cse0 (+ |v_~#a~0.offset_324| 2 .cse1))) (= (select .cse0 (+ |v_~#a~0.offset_324| .cse1)) |v_t_funThread2of2ForFork0_#t~nondet37#1_23|))) InVars {#race=|v_#race_285|, t_funThread2of2ForFork0_#t~nondet37#1=|v_t_funThread2of2ForFork0_#t~nondet37#1_23|, ~#a~0.base=|v_~#a~0.base_337|, ~#a~0.offset=|v_~#a~0.offset_324|, t_funThread2of2ForFork0_~i~0#1=|v_t_funThread2of2ForFork0_~i~0#1_105|} OutVars{#race=|v_#race_285|, t_funThread2of2ForFork0_#t~nondet37#1=|v_t_funThread2of2ForFork0_#t~nondet37#1_23|, t_funThread2of2ForFork0_#t~post36#1=|v_t_funThread2of2ForFork0_#t~post36#1_15|, ~#a~0.base=|v_~#a~0.base_337|, ~#a~0.offset=|v_~#a~0.offset_324|, t_funThread2of2ForFork0_~i~0#1=|v_t_funThread2of2ForFork0_~i~0#1_105|, t_funThread2of2ForFork0_#t~mem35#1=|v_t_funThread2of2ForFork0_#t~mem35#1_15|} AuxVars[] AssignedVars[t_funThread2of2ForFork0_#t~post36#1, t_funThread2of2ForFork0_#t~mem35#1][127], [Black: 361#(<= |ULTIMATE.start_main_~i~3#1| 0), Black: 649#(< |ULTIMATE.start_main_~i~1#1| 6), Black: 633#(< |ULTIMATE.start_main_~i~1#1| 10), 95#L944-22true, 263#L953-7true, Black: 645#(< |ULTIMATE.start_main_~i~1#1| 7), Black: 637#(< |ULTIMATE.start_main_~i~1#1| 9), 305#L944-47true, Black: 547#(<= |ULTIMATE.start_main_~i~1#1| 4), Black: 641#(< |ULTIMATE.start_main_~i~1#1| 8), t_funThread1of2ForFork0InUse, t_funThread2of2ForFork0InUse, Black: 523#(= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0), Black: 391#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 535#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0) (= 0 (select (select |#race| |~#a~0.base|) (+ 3 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|))) (= (select (select |#race| |~#a~0.base|) (+ 2 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0)), Black: 345#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 472#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 527#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0)), Black: 468#(< |ULTIMATE.start_main_~i~1#1| 10), Black: 531#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0) (= (select (select |#race| |~#a~0.base|) (+ 2 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0)), 541#true, Black: 667#(and (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#a~0.base|)) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (= |t_funThread1of2ForFork0_#t~mem43#1| 0) (= |~#a~0.base| 4)), Black: 669#(and (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (= |t_funThread1of2ForFork0_#t~mem43#1| 0) (= |~#a~0.base| 4)), Black: 665#(and (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#a~0.base|)) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (= |~#a~0.base| 4)), Black: 663#(= |t_funThread1of2ForFork0_#t~mem43#1| 0), 477#true, 657#true, 783#(< |ULTIMATE.start_main_~i~3#1| 9999)]) [2023-08-26 07:56:53,130 INFO L294 olderBase$Statistics]: this new event has 54 ancestors and is cut-off event [2023-08-26 07:56:53,130 INFO L297 olderBase$Statistics]: existing Event has 54 ancestors and is cut-off event [2023-08-26 07:56:53,130 INFO L297 olderBase$Statistics]: existing Event has 54 ancestors and is cut-off event [2023-08-26 07:56:53,130 INFO L297 olderBase$Statistics]: existing Event has 54 ancestors and is cut-off event [2023-08-26 07:56:53,178 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1798] L944-19-->L944-22: Formula: (let ((.cse0 (select |v_#race_285| |v_~#a~0.base_337|)) (.cse1 (* |v_t_funThread2of2ForFork0_~i~0#1_105| 28))) (and (= |v_t_funThread2of2ForFork0_#t~nondet37#1_23| (select .cse0 (+ |v_~#a~0.offset_324| .cse1 1))) (= |v_t_funThread2of2ForFork0_#t~nondet37#1_23| (select .cse0 (+ |v_~#a~0.offset_324| 3 .cse1))) (= |v_t_funThread2of2ForFork0_#t~nondet37#1_23| (select .cse0 (+ |v_~#a~0.offset_324| 2 .cse1))) (= (select .cse0 (+ |v_~#a~0.offset_324| .cse1)) |v_t_funThread2of2ForFork0_#t~nondet37#1_23|))) InVars {#race=|v_#race_285|, t_funThread2of2ForFork0_#t~nondet37#1=|v_t_funThread2of2ForFork0_#t~nondet37#1_23|, ~#a~0.base=|v_~#a~0.base_337|, ~#a~0.offset=|v_~#a~0.offset_324|, t_funThread2of2ForFork0_~i~0#1=|v_t_funThread2of2ForFork0_~i~0#1_105|} OutVars{#race=|v_#race_285|, t_funThread2of2ForFork0_#t~nondet37#1=|v_t_funThread2of2ForFork0_#t~nondet37#1_23|, t_funThread2of2ForFork0_#t~post36#1=|v_t_funThread2of2ForFork0_#t~post36#1_15|, ~#a~0.base=|v_~#a~0.base_337|, ~#a~0.offset=|v_~#a~0.offset_324|, t_funThread2of2ForFork0_~i~0#1=|v_t_funThread2of2ForFork0_~i~0#1_105|, t_funThread2of2ForFork0_#t~mem35#1=|v_t_funThread2of2ForFork0_#t~mem35#1_15|} AuxVars[] AssignedVars[t_funThread2of2ForFork0_#t~post36#1, t_funThread2of2ForFork0_#t~mem35#1][127], [Black: 361#(<= |ULTIMATE.start_main_~i~3#1| 0), Black: 649#(< |ULTIMATE.start_main_~i~1#1| 6), Black: 633#(< |ULTIMATE.start_main_~i~1#1| 10), 95#L944-22true, 263#L953-7true, Black: 645#(< |ULTIMATE.start_main_~i~1#1| 7), Black: 637#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 547#(<= |ULTIMATE.start_main_~i~1#1| 4), Black: 641#(< |ULTIMATE.start_main_~i~1#1| 8), t_funThread1of2ForFork0InUse, t_funThread2of2ForFork0InUse, Black: 523#(= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0), Black: 391#(<= |ULTIMATE.start_main_~i~1#1| 1), Black: 535#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0) (= 0 (select (select |#race| |~#a~0.base|) (+ 3 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|))) (= (select (select |#race| |~#a~0.base|) (+ 2 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0)), Black: 345#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 472#(< |ULTIMATE.start_main_~i~1#1| 9), Black: 527#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0)), Black: 531#(and (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0) (= (select (select |#race| |~#a~0.base|) (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset| 1)) 0) (= (select (select |#race| |~#a~0.base|) (+ 2 (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|)) 0)), Black: 468#(< |ULTIMATE.start_main_~i~1#1| 10), 541#true, Black: 667#(and (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#a~0.base|)) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (= |t_funThread1of2ForFork0_#t~mem43#1| 0) (= |~#a~0.base| 4)), Black: 669#(and (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (= |t_funThread1of2ForFork0_#t~mem43#1| 0) (= |~#a~0.base| 4)), Black: 665#(and (not (= |ULTIMATE.start_main_~#t_ids~0#1.base| |~#a~0.base|)) (= (select |#valid| 4) 1) (= ((as const (Array Int Int)) 0) (select |#memory_int| 4)) (= |~#a~0.base| 4)), Black: 663#(= |t_funThread1of2ForFork0_#t~mem43#1| 0), 477#true, 53#L944-28true, 657#true, 783#(< |ULTIMATE.start_main_~i~3#1| 9999)]) [2023-08-26 07:56:53,178 INFO L294 olderBase$Statistics]: this new event has 55 ancestors and is cut-off event [2023-08-26 07:56:53,178 INFO L297 olderBase$Statistics]: existing Event has 55 ancestors and is cut-off event [2023-08-26 07:56:53,178 INFO L297 olderBase$Statistics]: existing Event has 55 ancestors and is cut-off event [2023-08-26 07:56:53,178 INFO L297 olderBase$Statistics]: existing Event has 55 ancestors and is cut-off event [2023-08-26 07:56:53,854 INFO L124 PetriNetUnfolderBase]: 4728/10871 cut-off events. [2023-08-26 07:56:53,855 INFO L125 PetriNetUnfolderBase]: For 6115/6666 co-relation queries the response was YES. [2023-08-26 07:56:54,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26495 conditions, 10871 events. 4728/10871 cut-off events. For 6115/6666 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 98389 event pairs, 447 based on Foata normal form. 1372/11348 useless extension candidates. Maximal degree in co-relation 26431. Up to 5741 conditions per place. [2023-08-26 07:56:54,114 INFO L140 encePairwiseOnDemand]: 630/633 looper letters, 156 selfloop transitions, 3 changer transitions 0/261 dead transitions. [2023-08-26 07:56:54,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 261 transitions, 1407 flow [2023-08-26 07:56:54,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 07:56:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 07:56:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1731 transitions. [2023-08-26 07:56:54,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5469194312796208 [2023-08-26 07:56:54,118 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1731 transitions. [2023-08-26 07:56:54,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1731 transitions. [2023-08-26 07:56:54,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:56:54,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1731 transitions. [2023-08-26 07:56:54,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 346.2) internal successors, (1731), 5 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:56:54,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:56:54,140 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 633.0) internal successors, (3798), 6 states have internal predecessors, (3798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:56:54,140 INFO L175 Difference]: Start difference. First operand has 206 places, 273 transitions, 1102 flow. Second operand 5 states and 1731 transitions. [2023-08-26 07:56:54,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 261 transitions, 1407 flow [2023-08-26 07:56:54,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 261 transitions, 1389 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-26 07:56:54,180 INFO L231 Difference]: Finished difference. Result has 149 places, 181 transitions, 769 flow [2023-08-26 07:56:54,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=769, PETRI_PLACES=149, PETRI_TRANSITIONS=181} [2023-08-26 07:56:54,181 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, -15 predicate places. [2023-08-26 07:56:54,181 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 181 transitions, 769 flow [2023-08-26 07:56:54,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 328.57142857142856) internal successors, (2300), 7 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:56:54,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:56:54,181 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:56:54,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 07:56:54,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:56:54,386 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:56:54,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:56:54,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1117975021, now seen corresponding path program 1 times [2023-08-26 07:56:54,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:56:54,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587624010] [2023-08-26 07:56:54,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:56:54,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:56:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:56:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-26 07:56:54,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:56:54,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587624010] [2023-08-26 07:56:54,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587624010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:56:54,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:56:54,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:56:54,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788695554] [2023-08-26 07:56:54,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:56:54,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:56:54,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:56:54,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:56:54,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:56:54,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 633 [2023-08-26 07:56:54,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 181 transitions, 769 flow. Second operand has 6 states, 6 states have (on average 216.5) internal successors, (1299), 6 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:56:54,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:56:54,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 633 [2023-08-26 07:56:54,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:57:00,811 INFO L124 PetriNetUnfolderBase]: 24822/41396 cut-off events. [2023-08-26 07:57:00,811 INFO L125 PetriNetUnfolderBase]: For 29174/29174 co-relation queries the response was YES. [2023-08-26 07:57:01,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110254 conditions, 41396 events. 24822/41396 cut-off events. For 29174/29174 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 317179 event pairs, 9861 based on Foata normal form. 0/38275 useless extension candidates. Maximal degree in co-relation 110192. Up to 21909 conditions per place. [2023-08-26 07:57:01,262 INFO L140 encePairwiseOnDemand]: 604/633 looper letters, 507 selfloop transitions, 120 changer transitions 0/636 dead transitions. [2023-08-26 07:57:01,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 636 transitions, 4001 flow [2023-08-26 07:57:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:57:01,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:57:01,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1642 transitions. [2023-08-26 07:57:01,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43233280674038965 [2023-08-26 07:57:01,266 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1642 transitions. [2023-08-26 07:57:01,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1642 transitions. [2023-08-26 07:57:01,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:57:01,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1642 transitions. [2023-08-26 07:57:01,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 273.6666666666667) internal successors, (1642), 6 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:01,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 633.0) internal successors, (4431), 7 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:01,280 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 633.0) internal successors, (4431), 7 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:01,280 INFO L175 Difference]: Start difference. First operand has 149 places, 181 transitions, 769 flow. Second operand 6 states and 1642 transitions. [2023-08-26 07:57:01,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 636 transitions, 4001 flow [2023-08-26 07:57:01,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 636 transitions, 3986 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-26 07:57:01,348 INFO L231 Difference]: Finished difference. Result has 155 places, 300 transitions, 1709 flow [2023-08-26 07:57:01,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1709, PETRI_PLACES=155, PETRI_TRANSITIONS=300} [2023-08-26 07:57:01,349 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, -9 predicate places. [2023-08-26 07:57:01,349 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 300 transitions, 1709 flow [2023-08-26 07:57:01,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 216.5) internal successors, (1299), 6 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:01,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:57:01,349 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:57:01,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 07:57:01,350 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:57:01,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:57:01,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1117974728, now seen corresponding path program 1 times [2023-08-26 07:57:01,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:57:01,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267870127] [2023-08-26 07:57:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:57:01,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:57:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:57:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 07:57:01,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:57:01,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267870127] [2023-08-26 07:57:01,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267870127] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:57:01,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688431577] [2023-08-26 07:57:01,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:57:01,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:57:01,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:57:01,693 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:57:01,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 07:57:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:57:01,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-26 07:57:01,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:57:01,871 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-26 07:57:01,974 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:57:01,976 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 07:57:01,994 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 07:57:02,037 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 07:57:02,333 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-08-26 07:57:02,381 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 07:57:02,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:57:18,538 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_t_funThread2of2ForFork0_~i~0#1_125| Int) (v_ArrVal_926 (Array Int Int)) (|~#a~0.offset| Int)) (or (<= 10 |v_t_funThread2of2ForFork0_~i~0#1_125|) (< |v_t_funThread2of2ForFork0_~i~0#1_125| 0) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_926) |c_~#a~0.base|) (+ (* |v_t_funThread2of2ForFork0_~i~0#1_125| 28) |~#a~0.offset|)) 0))) is different from false [2023-08-26 07:57:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-26 07:57:18,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688431577] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:57:18,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:57:18,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-26 07:57:18,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537839596] [2023-08-26 07:57:18,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:57:18,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 07:57:18,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:57:18,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 07:57:18,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=96, Unknown=8, NotChecked=22, Total=182 [2023-08-26 07:57:18,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 633 [2023-08-26 07:57:18,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 300 transitions, 1709 flow. Second operand has 14 states, 14 states have (on average 196.57142857142858) internal successors, (2752), 14 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:18,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:57:18,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 633 [2023-08-26 07:57:18,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:57:27,091 WARN L234 SmtUtils]: Spent 8.16s on a formula simplification. DAG size of input: 31 DAG size of output: 26 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 07:57:29,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 07:57:31,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 07:57:33,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 07:57:34,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 07:57:36,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-26 07:57:41,413 INFO L124 PetriNetUnfolderBase]: 26733/44617 cut-off events. [2023-08-26 07:57:41,413 INFO L125 PetriNetUnfolderBase]: For 30030/30030 co-relation queries the response was YES. [2023-08-26 07:57:41,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128849 conditions, 44617 events. 26733/44617 cut-off events. For 30030/30030 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 344547 event pairs, 6735 based on Foata normal form. 0/42175 useless extension candidates. Maximal degree in co-relation 128784. Up to 37591 conditions per place. [2023-08-26 07:57:41,788 INFO L140 encePairwiseOnDemand]: 623/633 looper letters, 410 selfloop transitions, 17 changer transitions 10/446 dead transitions. [2023-08-26 07:57:41,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 446 transitions, 3230 flow [2023-08-26 07:57:41,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 07:57:41,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 07:57:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1770 transitions. [2023-08-26 07:57:41,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3495260663507109 [2023-08-26 07:57:41,790 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1770 transitions. [2023-08-26 07:57:41,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1770 transitions. [2023-08-26 07:57:41,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:57:41,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1770 transitions. [2023-08-26 07:57:41,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 221.25) internal successors, (1770), 8 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:41,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 633.0) internal successors, (5697), 9 states have internal predecessors, (5697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:41,795 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 633.0) internal successors, (5697), 9 states have internal predecessors, (5697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:41,795 INFO L175 Difference]: Start difference. First operand has 155 places, 300 transitions, 1709 flow. Second operand 8 states and 1770 transitions. [2023-08-26 07:57:41,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 446 transitions, 3230 flow [2023-08-26 07:57:41,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 446 transitions, 3230 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:57:41,876 INFO L231 Difference]: Finished difference. Result has 167 places, 312 transitions, 1847 flow [2023-08-26 07:57:41,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1847, PETRI_PLACES=167, PETRI_TRANSITIONS=312} [2023-08-26 07:57:41,877 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 3 predicate places. [2023-08-26 07:57:41,877 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 312 transitions, 1847 flow [2023-08-26 07:57:41,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 196.57142857142858) internal successors, (2752), 14 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:41,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:57:41,877 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:57:41,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-26 07:57:42,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-26 07:57:42,081 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:57:42,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:57:42,081 INFO L85 PathProgramCache]: Analyzing trace with hash -997858891, now seen corresponding path program 1 times [2023-08-26 07:57:42,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:57:42,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689441249] [2023-08-26 07:57:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:57:42,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:57:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:57:42,319 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:57:42,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:57:42,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689441249] [2023-08-26 07:57:42,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689441249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:57:42,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:57:42,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:57:42,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442053432] [2023-08-26 07:57:42,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:57:42,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:57:42,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:57:42,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:57:42,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:57:42,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 633 [2023-08-26 07:57:42,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 312 transitions, 1847 flow. Second operand has 6 states, 6 states have (on average 215.33333333333334) internal successors, (1292), 6 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:42,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:57:42,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 633 [2023-08-26 07:57:42,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:57:48,094 INFO L124 PetriNetUnfolderBase]: 29823/49717 cut-off events. [2023-08-26 07:57:48,094 INFO L125 PetriNetUnfolderBase]: For 35479/35479 co-relation queries the response was YES. [2023-08-26 07:57:48,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144731 conditions, 49717 events. 29823/49717 cut-off events. For 35479/35479 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 391420 event pairs, 18461 based on Foata normal form. 0/46941 useless extension candidates. Maximal degree in co-relation 144659. Up to 41777 conditions per place. [2023-08-26 07:57:48,545 INFO L140 encePairwiseOnDemand]: 606/633 looper letters, 488 selfloop transitions, 124 changer transitions 0/621 dead transitions. [2023-08-26 07:57:48,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 621 transitions, 4553 flow [2023-08-26 07:57:48,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:57:48,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:57:48,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1570 transitions. [2023-08-26 07:57:48,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4133754607688257 [2023-08-26 07:57:48,547 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1570 transitions. [2023-08-26 07:57:48,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1570 transitions. [2023-08-26 07:57:48,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:57:48,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1570 transitions. [2023-08-26 07:57:48,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.6666666666667) internal successors, (1570), 6 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:48,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 633.0) internal successors, (4431), 7 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:48,552 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 633.0) internal successors, (4431), 7 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:48,552 INFO L175 Difference]: Start difference. First operand has 167 places, 312 transitions, 1847 flow. Second operand 6 states and 1570 transitions. [2023-08-26 07:57:48,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 621 transitions, 4553 flow [2023-08-26 07:57:48,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 621 transitions, 4551 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:57:48,634 INFO L231 Difference]: Finished difference. Result has 175 places, 416 transitions, 2917 flow [2023-08-26 07:57:48,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2917, PETRI_PLACES=175, PETRI_TRANSITIONS=416} [2023-08-26 07:57:48,635 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 11 predicate places. [2023-08-26 07:57:48,635 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 416 transitions, 2917 flow [2023-08-26 07:57:48,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 215.33333333333334) internal successors, (1292), 6 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:48,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:57:48,636 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:57:48,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-26 07:57:48,636 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:57:48,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:57:48,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1513716273, now seen corresponding path program 1 times [2023-08-26 07:57:48,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:57:48,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170600824] [2023-08-26 07:57:48,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:57:48,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:57:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:57:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-26 07:57:48,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:57:48,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170600824] [2023-08-26 07:57:48,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170600824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:57:48,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:57:48,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:57:48,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73666995] [2023-08-26 07:57:48,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:57:48,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:57:48,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:57:48,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:57:48,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:57:48,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 633 [2023-08-26 07:57:48,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 416 transitions, 2917 flow. Second operand has 6 states, 6 states have (on average 215.5) internal successors, (1293), 6 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:48,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:57:48,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 633 [2023-08-26 07:57:48,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:57:55,976 INFO L124 PetriNetUnfolderBase]: 32986/54875 cut-off events. [2023-08-26 07:57:55,977 INFO L125 PetriNetUnfolderBase]: For 58765/58765 co-relation queries the response was YES. [2023-08-26 07:57:56,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174613 conditions, 54875 events. 32986/54875 cut-off events. For 58765/58765 co-relation queries the response was YES. Maximal size of possible extension queue 1426. Compared 438723 event pairs, 19655 based on Foata normal form. 0/52402 useless extension candidates. Maximal degree in co-relation 174537. Up to 46349 conditions per place. [2023-08-26 07:57:56,777 INFO L140 encePairwiseOnDemand]: 606/633 looper letters, 608 selfloop transitions, 147 changer transitions 0/764 dead transitions. [2023-08-26 07:57:56,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 764 transitions, 6221 flow [2023-08-26 07:57:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:57:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:57:56,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1578 transitions. [2023-08-26 07:57:56,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154818325434439 [2023-08-26 07:57:56,779 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1578 transitions. [2023-08-26 07:57:56,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1578 transitions. [2023-08-26 07:57:56,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:57:56,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1578 transitions. [2023-08-26 07:57:56,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.0) internal successors, (1578), 6 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:56,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 633.0) internal successors, (4431), 7 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:56,783 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 633.0) internal successors, (4431), 7 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:56,783 INFO L175 Difference]: Start difference. First operand has 175 places, 416 transitions, 2917 flow. Second operand 6 states and 1578 transitions. [2023-08-26 07:57:56,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 764 transitions, 6221 flow [2023-08-26 07:57:56,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 764 transitions, 6099 flow, removed 61 selfloop flow, removed 0 redundant places. [2023-08-26 07:57:56,961 INFO L231 Difference]: Finished difference. Result has 184 places, 526 transitions, 4087 flow [2023-08-26 07:57:56,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=2811, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4087, PETRI_PLACES=184, PETRI_TRANSITIONS=526} [2023-08-26 07:57:56,962 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 20 predicate places. [2023-08-26 07:57:56,962 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 526 transitions, 4087 flow [2023-08-26 07:57:56,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 215.5) internal successors, (1293), 6 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:56,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:57:56,962 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 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] [2023-08-26 07:57:56,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-26 07:57:56,962 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:57:56,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:57:56,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2115291706, now seen corresponding path program 1 times [2023-08-26 07:57:56,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:57:56,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315071458] [2023-08-26 07:57:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:57:56,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:57:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:57:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 07:57:57,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:57:57,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315071458] [2023-08-26 07:57:57,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315071458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:57:57,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:57:57,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 07:57:57,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816885171] [2023-08-26 07:57:57,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:57:57,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 07:57:57,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:57:57,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 07:57:57,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:57:57,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 633 [2023-08-26 07:57:57,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 526 transitions, 4087 flow. Second operand has 5 states, 5 states have (on average 199.2) internal successors, (996), 5 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:57,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:57:57,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 633 [2023-08-26 07:57:57,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:57:58,007 INFO L124 PetriNetUnfolderBase]: 2944/5595 cut-off events. [2023-08-26 07:57:58,008 INFO L125 PetriNetUnfolderBase]: For 5263/5263 co-relation queries the response was YES. [2023-08-26 07:57:58,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17571 conditions, 5595 events. 2944/5595 cut-off events. For 5263/5263 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 33986 event pairs, 552 based on Foata normal form. 618/5894 useless extension candidates. Maximal degree in co-relation 17490. Up to 3894 conditions per place. [2023-08-26 07:57:58,045 INFO L140 encePairwiseOnDemand]: 618/633 looper letters, 182 selfloop transitions, 15 changer transitions 12/215 dead transitions. [2023-08-26 07:57:58,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 215 transitions, 1685 flow [2023-08-26 07:57:58,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:57:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:57:58,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 954 transitions. [2023-08-26 07:57:58,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3767772511848341 [2023-08-26 07:57:58,047 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 954 transitions. [2023-08-26 07:57:58,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 954 transitions. [2023-08-26 07:57:58,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:57:58,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 954 transitions. [2023-08-26 07:57:58,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:58,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:58,050 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 633.0) internal successors, (3165), 5 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:58,050 INFO L175 Difference]: Start difference. First operand has 184 places, 526 transitions, 4087 flow. Second operand 4 states and 954 transitions. [2023-08-26 07:57:58,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 215 transitions, 1685 flow [2023-08-26 07:57:58,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 215 transitions, 1129 flow, removed 146 selfloop flow, removed 34 redundant places. [2023-08-26 07:57:58,081 INFO L231 Difference]: Finished difference. Result has 144 places, 126 transitions, 482 flow [2023-08-26 07:57:58,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=482, PETRI_PLACES=144, PETRI_TRANSITIONS=126} [2023-08-26 07:57:58,082 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, -20 predicate places. [2023-08-26 07:57:58,082 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 126 transitions, 482 flow [2023-08-26 07:57:58,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.2) internal successors, (996), 5 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:57:58,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:57:58,082 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 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] [2023-08-26 07:57:58,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-26 07:57:58,082 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:57:58,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:57:58,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1007399858, now seen corresponding path program 1 times [2023-08-26 07:57:58,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:57:58,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877103369] [2023-08-26 07:57:58,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:57:58,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:57:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:57:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 07:57:58,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:57:58,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877103369] [2023-08-26 07:57:58,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877103369] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:57:58,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523304974] [2023-08-26 07:57:58,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:57:58,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:57:58,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:57:58,753 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:57:58,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 07:57:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:57:58,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 07:57:58,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:57:58,943 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-26 07:57:58,993 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:57:58,994 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 07:57:59,017 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 07:57:59,041 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 07:57:59,060 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-26 07:57:59,107 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:57:59,108 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-26 07:57:59,208 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-26 07:57:59,325 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-08-26 07:57:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 07:57:59,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:57:59,506 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2023-08-26 07:57:59,512 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 8 [2023-08-26 07:58:03,554 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1204 (Array Int Int))) (= ((as const (Array Int Int)) 0) (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1204) |c_~#a~0.base|))) is different from false [2023-08-26 07:58:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-26 07:58:03,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523304974] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:58:03,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:58:03,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2023-08-26 07:58:03,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214548768] [2023-08-26 07:58:03,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:58:03,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 07:58:03,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:03,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 07:58:03,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=267, Unknown=1, NotChecked=34, Total=380 [2023-08-26 07:58:03,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 633 [2023-08-26 07:58:03,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 126 transitions, 482 flow. Second operand has 20 states, 20 states have (on average 170.95) internal successors, (3419), 20 states have internal predecessors, (3419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:03,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:03,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 633 [2023-08-26 07:58:03,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:05,932 INFO L124 PetriNetUnfolderBase]: 4521/8637 cut-off events. [2023-08-26 07:58:05,932 INFO L125 PetriNetUnfolderBase]: For 3616/3628 co-relation queries the response was YES. [2023-08-26 07:58:05,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22711 conditions, 8637 events. 4521/8637 cut-off events. For 3616/3628 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 59316 event pairs, 673 based on Foata normal form. 16/8128 useless extension candidates. Maximal degree in co-relation 22647. Up to 4097 conditions per place. [2023-08-26 07:58:05,962 INFO L140 encePairwiseOnDemand]: 616/633 looper letters, 316 selfloop transitions, 40 changer transitions 48/410 dead transitions. [2023-08-26 07:58:05,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 410 transitions, 2240 flow [2023-08-26 07:58:05,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 07:58:05,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 07:58:05,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3879 transitions. [2023-08-26 07:58:05,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29180771834800273 [2023-08-26 07:58:05,966 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3879 transitions. [2023-08-26 07:58:05,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3879 transitions. [2023-08-26 07:58:05,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:05,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3879 transitions. [2023-08-26 07:58:05,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 184.71428571428572) internal successors, (3879), 21 states have internal predecessors, (3879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:05,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 633.0) internal successors, (13926), 22 states have internal predecessors, (13926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:05,978 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 633.0) internal successors, (13926), 22 states have internal predecessors, (13926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:05,978 INFO L175 Difference]: Start difference. First operand has 144 places, 126 transitions, 482 flow. Second operand 21 states and 3879 transitions. [2023-08-26 07:58:05,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 410 transitions, 2240 flow [2023-08-26 07:58:05,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 410 transitions, 2239 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:58:05,991 INFO L231 Difference]: Finished difference. Result has 176 places, 158 transitions, 812 flow [2023-08-26 07:58:05,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=812, PETRI_PLACES=176, PETRI_TRANSITIONS=158} [2023-08-26 07:58:05,992 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 12 predicate places. [2023-08-26 07:58:05,992 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 158 transitions, 812 flow [2023-08-26 07:58:05,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 170.95) internal successors, (3419), 20 states have internal predecessors, (3419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:05,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:05,993 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 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] [2023-08-26 07:58:06,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 07:58:06,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:06,199 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:58:06,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:06,199 INFO L85 PathProgramCache]: Analyzing trace with hash 851243841, now seen corresponding path program 1 times [2023-08-26 07:58:06,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:06,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703784234] [2023-08-26 07:58:06,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:06,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 07:58:06,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:06,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703784234] [2023-08-26 07:58:06,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703784234] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:58:06,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593427081] [2023-08-26 07:58:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:06,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:06,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:58:06,669 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:58:06,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-26 07:58:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:06,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-26 07:58:06,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:58:06,854 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-26 07:58:06,956 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:58:06,956 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 07:58:06,979 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 07:58:07,007 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 07:58:07,031 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-26 07:58:07,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:58:07,075 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-26 07:58:07,149 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:58:07,150 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-26 07:58:07,187 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-26 07:58:07,287 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-08-26 07:58:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 07:58:07,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:58:07,535 WARN L839 $PredicateComparison]: unable to prove that (and (or (<= 10 |c_t_funThread1of2ForFork0_~i~0#1|) (forall ((v_ArrVal_1340 (Array Int Int))) (not (= 0 (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_1340) |c_~#a~0.base|) (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset| 4))))) (< |c_t_funThread1of2ForFork0_~i~0#1| 0)) (forall ((|v_t_funThread2of2ForFork0_~i~0#1_129| Int) (v_ArrVal_1340 (Array Int Int))) (let ((.cse0 (* |v_t_funThread2of2ForFork0_~i~0#1_129| 28))) (or (<= 10 |v_t_funThread2of2ForFork0_~i~0#1_129|) (not (= (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_1340) |c_~#a~0.base|) (+ |c_~#a~0.offset| 4 .cse0)) 0)) (< |v_t_funThread2of2ForFork0_~i~0#1_129| 0) (= (select (select |c_#memory_int| |c_~#a~0.base|) (+ |c_~#a~0.offset| .cse0)) 0))))) is different from false [2023-08-26 07:58:07,580 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:58:07,581 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-26 07:58:07,583 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 30 [2023-08-26 07:58:07,592 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:58:07,592 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-26 07:58:07,594 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 07:58:07,600 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 07:58:07,600 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 12 [2023-08-26 07:58:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 07:58:22,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593427081] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:58:22,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:58:22,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-26 07:58:22,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117207842] [2023-08-26 07:58:22,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:58:22,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 07:58:22,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:22,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 07:58:22,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=4, NotChecked=36, Total=420 [2023-08-26 07:58:22,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 633 [2023-08-26 07:58:22,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 158 transitions, 812 flow. Second operand has 21 states, 21 states have (on average 173.04761904761904) internal successors, (3634), 21 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:22,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:22,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 633 [2023-08-26 07:58:22,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:25,193 INFO L124 PetriNetUnfolderBase]: 5544/10718 cut-off events. [2023-08-26 07:58:25,194 INFO L125 PetriNetUnfolderBase]: For 29391/29415 co-relation queries the response was YES. [2023-08-26 07:58:25,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37629 conditions, 10718 events. 5544/10718 cut-off events. For 29391/29415 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 78121 event pairs, 634 based on Foata normal form. 19/10059 useless extension candidates. Maximal degree in co-relation 37551. Up to 5381 conditions per place. [2023-08-26 07:58:25,265 INFO L140 encePairwiseOnDemand]: 619/633 looper letters, 373 selfloop transitions, 63 changer transitions 26/468 dead transitions. [2023-08-26 07:58:25,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 468 transitions, 3077 flow [2023-08-26 07:58:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 07:58:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 07:58:25,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3950 transitions. [2023-08-26 07:58:25,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2971488753479275 [2023-08-26 07:58:25,272 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3950 transitions. [2023-08-26 07:58:25,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3950 transitions. [2023-08-26 07:58:25,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:25,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3950 transitions. [2023-08-26 07:58:25,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 188.0952380952381) internal successors, (3950), 21 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:25,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 633.0) internal successors, (13926), 22 states have internal predecessors, (13926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:25,288 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 633.0) internal successors, (13926), 22 states have internal predecessors, (13926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:25,288 INFO L175 Difference]: Start difference. First operand has 176 places, 158 transitions, 812 flow. Second operand 21 states and 3950 transitions. [2023-08-26 07:58:25,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 468 transitions, 3077 flow [2023-08-26 07:58:25,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 468 transitions, 2999 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-08-26 07:58:25,339 INFO L231 Difference]: Finished difference. Result has 201 places, 205 transitions, 1348 flow [2023-08-26 07:58:25,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1348, PETRI_PLACES=201, PETRI_TRANSITIONS=205} [2023-08-26 07:58:25,340 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 37 predicate places. [2023-08-26 07:58:25,340 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 205 transitions, 1348 flow [2023-08-26 07:58:25,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 173.04761904761904) internal successors, (3634), 21 states have internal predecessors, (3634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:25,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:25,341 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 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] [2023-08-26 07:58:25,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-26 07:58:25,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-26 07:58:25,545 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:58:25,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:25,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1596331461, now seen corresponding path program 2 times [2023-08-26 07:58:25,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:25,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141394324] [2023-08-26 07:58:25,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:25,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 07:58:26,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141394324] [2023-08-26 07:58:26,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141394324] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:58:26,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128539881] [2023-08-26 07:58:26,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 07:58:26,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:26,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:58:26,125 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:58:26,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-26 07:58:26,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 07:58:26,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:58:26,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-26 07:58:26,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:58:26,448 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-26 07:58:26,545 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:58:26,545 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 07:58:26,571 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 07:58:26,599 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 07:58:26,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-26 07:58:26,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:58:26,664 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-26 07:58:26,728 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-26 07:58:26,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:58:26,802 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-26 07:58:26,842 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:58:26,842 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-26 07:58:26,886 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-08-26 07:58:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 07:58:26,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:58:26,943 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1477 (Array Int Int)) (|v_t_funThread2of2ForFork0_~i~0#1_131| Int)) (let ((.cse0 (* |v_t_funThread2of2ForFork0_~i~0#1_131| 28))) (or (= (select (select |c_#memory_int| |c_~#a~0.base|) (+ |c_~#a~0.offset| .cse0)) 0) (not (= (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_1477) |c_~#a~0.base|) (+ |c_~#a~0.offset| .cse0 4)) 0))))) is different from false [2023-08-26 07:58:27,058 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:58:27,059 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-26 07:58:27,066 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:58:27,066 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 38 [2023-08-26 07:58:27,070 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-26 07:58:31,125 WARN L839 $PredicateComparison]: unable to prove that (and (not (= |c_~#a~0.base| |c_~#__global_lock~0.base|)) (forall ((v_ArrVal_1471 (Array Int Int))) (= ((as const (Array Int Int)) 0) (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1471) |c_~#a~0.base|)))) is different from false [2023-08-26 07:58:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-26 07:58:33,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128539881] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:58:33,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:58:33,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-08-26 07:58:33,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084687299] [2023-08-26 07:58:33,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:58:33,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 07:58:33,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:33,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 07:58:33,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=309, Unknown=4, NotChecked=78, Total=506 [2023-08-26 07:58:33,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 633 [2023-08-26 07:58:33,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 205 transitions, 1348 flow. Second operand has 23 states, 23 states have (on average 172.7391304347826) internal successors, (3973), 23 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:33,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:33,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 633 [2023-08-26 07:58:33,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:36,129 INFO L124 PetriNetUnfolderBase]: 6527/12714 cut-off events. [2023-08-26 07:58:36,129 INFO L125 PetriNetUnfolderBase]: For 112048/112088 co-relation queries the response was YES. [2023-08-26 07:58:36,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56588 conditions, 12714 events. 6527/12714 cut-off events. For 112048/112088 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 97208 event pairs, 1031 based on Foata normal form. 16/11922 useless extension candidates. Maximal degree in co-relation 56498. Up to 6339 conditions per place. [2023-08-26 07:58:36,235 INFO L140 encePairwiseOnDemand]: 620/633 looper letters, 324 selfloop transitions, 85 changer transitions 36/451 dead transitions. [2023-08-26 07:58:36,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 451 transitions, 3569 flow [2023-08-26 07:58:36,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 07:58:36,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 07:58:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2867 transitions. [2023-08-26 07:58:36,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30194839389152184 [2023-08-26 07:58:36,239 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2867 transitions. [2023-08-26 07:58:36,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2867 transitions. [2023-08-26 07:58:36,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:36,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2867 transitions. [2023-08-26 07:58:36,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 191.13333333333333) internal successors, (2867), 15 states have internal predecessors, (2867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:36,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 633.0) internal successors, (10128), 16 states have internal predecessors, (10128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:36,249 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 633.0) internal successors, (10128), 16 states have internal predecessors, (10128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:36,249 INFO L175 Difference]: Start difference. First operand has 201 places, 205 transitions, 1348 flow. Second operand 15 states and 2867 transitions. [2023-08-26 07:58:36,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 451 transitions, 3569 flow [2023-08-26 07:58:36,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 451 transitions, 3306 flow, removed 91 selfloop flow, removed 5 redundant places. [2023-08-26 07:58:36,623 INFO L231 Difference]: Finished difference. Result has 215 places, 237 transitions, 1747 flow [2023-08-26 07:58:36,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1747, PETRI_PLACES=215, PETRI_TRANSITIONS=237} [2023-08-26 07:58:36,624 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 51 predicate places. [2023-08-26 07:58:36,624 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 237 transitions, 1747 flow [2023-08-26 07:58:36,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 172.7391304347826) internal successors, (3973), 23 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:36,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:36,625 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 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] [2023-08-26 07:58:36,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-26 07:58:36,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-26 07:58:36,831 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:58:36,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:36,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2084514032, now seen corresponding path program 2 times [2023-08-26 07:58:36,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:36,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598084991] [2023-08-26 07:58:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:36,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:40,066 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:58:40,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:40,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598084991] [2023-08-26 07:58:40,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598084991] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:58:40,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051338831] [2023-08-26 07:58:40,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 07:58:40,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:40,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:58:40,069 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:58:40,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-26 07:58:40,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 07:58:40,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:58:40,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-26 07:58:40,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:58:40,489 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-26 07:58:40,595 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:58:40,596 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 07:58:40,639 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 07:58:40,670 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 07:58:40,713 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-26 07:58:40,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 07:58:40,795 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-26 07:58:40,915 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:58:40,915 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-26 07:58:40,969 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-26 07:58:41,124 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-08-26 07:58:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 07:58:41,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:58:41,427 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_t_funThread1of2ForFork0_~i~0#1_139| Int) (v_ArrVal_1610 Int) (v_ArrVal_1609 (Array Int Int))) (let ((.cse0 (* |v_t_funThread1of2ForFork0_~i~0#1_139| 28))) (or (not (= 0 (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_1609) |c_~#a~0.base|) (+ |c_~#a~0.offset| 4 .cse0)))) (= (select (store (select |c_#memory_int| |c_~#a~0.base|) (+ |c_~#a~0.offset| (* |c_t_funThread2of2ForFork0_~i~0#1| 28)) v_ArrVal_1610) (+ |c_~#a~0.offset| .cse0)) 0)))) is different from false [2023-08-26 07:58:41,453 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:58:41,453 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-26 07:58:41,464 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:58:41,464 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 38 [2023-08-26 07:58:41,470 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-26 07:59:15,799 WARN L839 $PredicateComparison]: unable to prove that (and (not (= |c_~#a~0.base| |c_~#__global_lock~0.base|)) (forall ((|v_t_funThread2of2ForFork0_~i~0#1_133| Int) (v_ArrVal_1606 (Array Int Int))) (or (<= 10 |v_t_funThread2of2ForFork0_~i~0#1_133|) (< |v_t_funThread2of2ForFork0_~i~0#1_133| 0) (forall ((|v_t_funThread1of2ForFork0_~i~0#1_139| Int) (|~#a~0.offset| Int) (v_ArrVal_1610 Int)) (or (= (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1606) |c_~#a~0.base|) (+ (* |v_t_funThread2of2ForFork0_~i~0#1_133| 28) |~#a~0.offset|) v_ArrVal_1610) (+ |~#a~0.offset| (* |v_t_funThread1of2ForFork0_~i~0#1_139| 28))) 0) (= |v_t_funThread1of2ForFork0_~i~0#1_139| |v_t_funThread2of2ForFork0_~i~0#1_133|)))))) is different from false [2023-08-26 07:59:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-26 07:59:19,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051338831] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:59:19,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:59:19,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 8, 8] total 36 [2023-08-26 07:59:19,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608533559] [2023-08-26 07:59:19,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:59:19,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-26 07:59:19,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:59:19,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-26 07:59:19,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1056, Unknown=4, NotChecked=138, Total=1406 [2023-08-26 07:59:19,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 633 [2023-08-26 07:59:19,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 237 transitions, 1747 flow. Second operand has 38 states, 38 states have (on average 162.8421052631579) internal successors, (6188), 38 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:19,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:59:19,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 633 [2023-08-26 07:59:19,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:59:28,256 INFO L124 PetriNetUnfolderBase]: 7601/14832 cut-off events. [2023-08-26 07:59:28,257 INFO L125 PetriNetUnfolderBase]: For 242177/242262 co-relation queries the response was YES. [2023-08-26 07:59:28,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75219 conditions, 14832 events. 7601/14832 cut-off events. For 242177/242262 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 117236 event pairs, 1574 based on Foata normal form. 32/13887 useless extension candidates. Maximal degree in co-relation 75124. Up to 8952 conditions per place. [2023-08-26 07:59:28,468 INFO L140 encePairwiseOnDemand]: 615/633 looper letters, 441 selfloop transitions, 99 changer transitions 24/570 dead transitions. [2023-08-26 07:59:28,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 570 transitions, 4929 flow [2023-08-26 07:59:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-26 07:59:28,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-26 07:59:28,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6529 transitions. [2023-08-26 07:59:28,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27143094703583603 [2023-08-26 07:59:28,474 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6529 transitions. [2023-08-26 07:59:28,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6529 transitions. [2023-08-26 07:59:28,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:59:28,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6529 transitions. [2023-08-26 07:59:28,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 171.81578947368422) internal successors, (6529), 38 states have internal predecessors, (6529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:28,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 633.0) internal successors, (24687), 39 states have internal predecessors, (24687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:28,502 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 633.0) internal successors, (24687), 39 states have internal predecessors, (24687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:28,503 INFO L175 Difference]: Start difference. First operand has 215 places, 237 transitions, 1747 flow. Second operand 38 states and 6529 transitions. [2023-08-26 07:59:28,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 570 transitions, 4929 flow [2023-08-26 07:59:29,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 570 transitions, 4613 flow, removed 114 selfloop flow, removed 9 redundant places. [2023-08-26 07:59:29,210 INFO L231 Difference]: Finished difference. Result has 258 places, 284 transitions, 2479 flow [2023-08-26 07:59:29,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=633, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=2479, PETRI_PLACES=258, PETRI_TRANSITIONS=284} [2023-08-26 07:59:29,210 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 94 predicate places. [2023-08-26 07:59:29,210 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 284 transitions, 2479 flow [2023-08-26 07:59:29,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 162.8421052631579) internal successors, (6188), 38 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:29,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:59:29,211 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 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] [2023-08-26 07:59:29,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-26 07:59:29,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-26 07:59:29,417 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:59:29,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:59:29,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2102468515, now seen corresponding path program 3 times [2023-08-26 07:59:29,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:59:29,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082171122] [2023-08-26 07:59:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:59:29,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:59:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:59:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 07:59:29,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:59:29,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082171122] [2023-08-26 07:59:29,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082171122] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:59:29,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820084148] [2023-08-26 07:59:29,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 07:59:29,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:59:29,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:59:29,800 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:59:29,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-26 07:59:30,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 07:59:30,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:59:30,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 07:59:30,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:59:30,348 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-26 07:59:30,425 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:59:30,425 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 07:59:30,446 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 07:59:30,470 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 07:59:30,492 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-26 07:59:30,522 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 07:59:30,523 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-26 07:59:30,589 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-26 07:59:30,657 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-08-26 07:59:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 07:59:30,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:59:30,792 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2023-08-26 07:59:30,796 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 8 [2023-08-26 07:59:38,826 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_t_funThread2of2ForFork0_~i~0#1_135| Int) (v_ArrVal_1740 (Array Int Int)) (|~#a~0.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1740) |c_~#a~0.base|) (+ (* |v_t_funThread2of2ForFork0_~i~0#1_135| 28) |~#a~0.offset|)) 0)) is different from false [2023-08-26 07:59:38,917 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-26 07:59:38,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820084148] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:59:38,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:59:38,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-26 07:59:38,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823790335] [2023-08-26 07:59:38,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:59:38,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 07:59:38,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:59:38,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 07:59:38,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=201, Unknown=3, NotChecked=30, Total=306 [2023-08-26 07:59:38,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 633 [2023-08-26 07:59:38,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 284 transitions, 2479 flow. Second operand has 18 states, 18 states have (on average 174.22222222222223) internal successors, (3136), 18 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:38,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:59:38,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 633 [2023-08-26 07:59:38,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand