/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 INSUFFICIENT_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/weaver/test-semi1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 21:30:53,359 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 21:30:53,397 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 [2023-08-25 21:30:53,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 21:30:53,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 21:30:53,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 21:30:53,415 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 21:30:53,415 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 21:30:53,416 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 21:30:53,416 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 21:30:53,416 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 21:30:53,417 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 21:30:53,417 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 21:30:53,417 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 21:30:53,417 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 21:30:53,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 21:30:53,418 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 21:30:53,418 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 21:30:53,418 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 21:30:53,419 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 21:30:53,419 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 21:30:53,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 21:30:53,419 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 21:30:53,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 21:30:53,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 21:30:53,420 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 21:30:53,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 21:30:53,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:30:53,421 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 21:30:53,421 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 21:30:53,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 21:30:53,421 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 21:30:53,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 21:30:53,422 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 21:30:53,422 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 21:30:53,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 21:30:53,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 21:30:53,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 21:30:53,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 21:30:53,711 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 21:30:53,712 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 21:30:53,713 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-semi1.wvr.c [2023-08-25 21:30:54,825 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 21:30:55,005 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 21:30:55,006 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-semi1.wvr.c [2023-08-25 21:30:55,011 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb950d47c/69afef470b0e4ef3b4fc6c5b16492fe7/FLAG169fb954c [2023-08-25 21:30:55,020 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb950d47c/69afef470b0e4ef3b4fc6c5b16492fe7 [2023-08-25 21:30:55,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 21:30:55,022 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 21:30:55,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 21:30:55,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 21:30:55,025 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 21:30:55,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:30:55" (1/1) ... [2023-08-25 21:30:55,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a43546e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:30:55, skipping insertion in model container [2023-08-25 21:30:55,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:30:55" (1/1) ... [2023-08-25 21:30:55,038 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 21:30:55,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:30:55,142 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 21:30:55,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:30:55,174 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 21:30:55,174 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 21:30:55,178 INFO L206 MainTranslator]: Completed translation [2023-08-25 21:30:55,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:30:55 WrapperNode [2023-08-25 21:30:55,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 21:30:55,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 21:30:55,181 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 21:30:55,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 21:30:55,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:30:55" (1/1) ... [2023-08-25 21:30:55,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:30:55" (1/1) ... [2023-08-25 21:30:55,225 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 111 [2023-08-25 21:30:55,225 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 21:30:55,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 21:30:55,226 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 21:30:55,226 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 21:30:55,231 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:30:55" (1/1) ... [2023-08-25 21:30:55,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:30:55" (1/1) ... [2023-08-25 21:30:55,240 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:30:55" (1/1) ... [2023-08-25 21:30:55,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:30:55" (1/1) ... [2023-08-25 21:30:55,249 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:30:55" (1/1) ... [2023-08-25 21:30:55,250 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:30:55" (1/1) ... [2023-08-25 21:30:55,251 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:30:55" (1/1) ... [2023-08-25 21:30:55,252 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:30:55" (1/1) ... [2023-08-25 21:30:55,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 21:30:55,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 21:30:55,254 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 21:30:55,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 21:30:55,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:30:55" (1/1) ... [2023-08-25 21:30:55,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:30:55,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:30:55,290 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) [2023-08-25 21:30:55,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 21:30:55,319 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 21:30:55,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 21:30:55,319 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 21:30:55,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 21:30:55,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 21:30:55,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 21:30:55,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 21:30:55,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 21:30:55,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 21:30:55,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 21:30:55,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 21:30:55,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 21:30:55,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 21:30:55,321 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 21:30:55,313 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 [2023-08-25 21:30:55,403 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 21:30:55,408 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 21:30:55,590 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 21:30:55,629 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 21:30:55,629 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-25 21:30:55,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:30:55 BoogieIcfgContainer [2023-08-25 21:30:55,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 21:30:55,632 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 21:30:55,632 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 21:30:55,634 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 21:30:55,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 09:30:55" (1/3) ... [2023-08-25 21:30:55,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16343ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:30:55, skipping insertion in model container [2023-08-25 21:30:55,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:30:55" (2/3) ... [2023-08-25 21:30:55,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16343ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:30:55, skipping insertion in model container [2023-08-25 21:30:55,635 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:30:55" (3/3) ... [2023-08-25 21:30:55,635 INFO L112 eAbstractionObserver]: Analyzing ICFG test-semi1.wvr.c [2023-08-25 21:30:55,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 21:30:55,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-08-25 21:30:55,655 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 21:30:55,725 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 21:30:55,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 118 transitions, 252 flow [2023-08-25 21:30:55,801 INFO L124 PetriNetUnfolderBase]: 3/116 cut-off events. [2023-08-25 21:30:55,801 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:30:55,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 116 events. 3/116 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-08-25 21:30:55,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 118 transitions, 252 flow [2023-08-25 21:30:55,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 107 transitions, 226 flow [2023-08-25 21:30:55,808 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 21:30:55,813 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 107 transitions, 226 flow [2023-08-25 21:30:55,815 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 107 transitions, 226 flow [2023-08-25 21:30:55,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 107 transitions, 226 flow [2023-08-25 21:30:55,840 INFO L124 PetriNetUnfolderBase]: 3/107 cut-off events. [2023-08-25 21:30:55,840 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:30:55,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 107 events. 3/107 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-08-25 21:30:55,841 INFO L119 LiptonReduction]: Number of co-enabled transitions 426 [2023-08-25 21:30:58,192 INFO L134 LiptonReduction]: Checked pairs total: 577 [2023-08-25 21:30:58,192 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-25 21:30:58,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 21:30:58,206 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;@79827244, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 21:30:58,206 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-25 21:30:58,206 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 21:30:58,207 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 21:30:58,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 21:30:58,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:30:58,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 21:30:58,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:30:58,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:30:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash 459, now seen corresponding path program 1 times [2023-08-25 21:30:58,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:30:58,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990837422] [2023-08-25 21:30:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:30:58,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:30:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:30:58,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:30:58,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:30:58,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990837422] [2023-08-25 21:30:58,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990837422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:30:58,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:30:58,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 21:30:58,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263206011] [2023-08-25 21:30:58,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:30:58,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 21:30:58,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:30:58,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 21:30:58,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 21:30:58,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 240 [2023-08-25 21:30:58,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 62 flow. Second operand has 2 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:30:58,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:30:58,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 240 [2023-08-25 21:30:58,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:30:58,313 INFO L124 PetriNetUnfolderBase]: 9/28 cut-off events. [2023-08-25 21:30:58,313 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 21:30:58,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 28 events. 9/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 40. Up to 29 conditions per place. [2023-08-25 21:30:58,315 INFO L140 encePairwiseOnDemand]: 226/240 looper letters, 11 selfloop transitions, 0 changer transitions 0/11 dead transitions. [2023-08-25 21:30:58,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 11 transitions, 56 flow [2023-08-25 21:30:58,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 21:30:58,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 21:30:58,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 231 transitions. [2023-08-25 21:30:58,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48125 [2023-08-25 21:30:58,326 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 231 transitions. [2023-08-25 21:30:58,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 231 transitions. [2023-08-25 21:30:58,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:30:58,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 231 transitions. [2023-08-25 21:30:58,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:30:58,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:30:58,334 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:30:58,335 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 62 flow. Second operand 2 states and 231 transitions. [2023-08-25 21:30:58,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 11 transitions, 56 flow [2023-08-25 21:30:58,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 11 transitions, 48 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 21:30:58,338 INFO L231 Difference]: Finished difference. Result has 15 places, 11 transitions, 26 flow [2023-08-25 21:30:58,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=26, PETRI_PLACES=15, PETRI_TRANSITIONS=11} [2023-08-25 21:30:58,340 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -17 predicate places. [2023-08-25 21:30:58,341 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 11 transitions, 26 flow [2023-08-25 21:30:58,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:30:58,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:30:58,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:30:58,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 21:30:58,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:30:58,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:30:58,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1894703992, now seen corresponding path program 1 times [2023-08-25 21:30:58,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:30:58,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254016585] [2023-08-25 21:30:58,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:30:58,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:30:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:30:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:30:58,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:30:58,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254016585] [2023-08-25 21:30:58,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254016585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:30:58,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:30:58,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:30:58,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013054622] [2023-08-25 21:30:58,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:30:58,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 21:30:58,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:30:58,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 21:30:58,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 21:30:58,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 240 [2023-08-25 21:30:58,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 11 transitions, 26 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:30:58,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:30:58,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 240 [2023-08-25 21:30:58,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:30:58,737 INFO L124 PetriNetUnfolderBase]: 8/32 cut-off events. [2023-08-25 21:30:58,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 21:30:58,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 32 events. 8/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 1 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 67. Up to 13 conditions per place. [2023-08-25 21:30:58,739 INFO L140 encePairwiseOnDemand]: 236/240 looper letters, 10 selfloop transitions, 2 changer transitions 10/22 dead transitions. [2023-08-25 21:30:58,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 22 transitions, 96 flow [2023-08-25 21:30:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 21:30:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 21:30:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2023-08-25 21:30:58,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4239583333333333 [2023-08-25 21:30:58,743 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2023-08-25 21:30:58,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2023-08-25 21:30:58,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:30:58,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2023-08-25 21:30:58,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:30:58,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 240.0) internal successors, (1200), 5 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:30:58,749 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 240.0) internal successors, (1200), 5 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:30:58,749 INFO L175 Difference]: Start difference. First operand has 15 places, 11 transitions, 26 flow. Second operand 4 states and 407 transitions. [2023-08-25 21:30:58,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 22 transitions, 96 flow [2023-08-25 21:30:58,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 22 transitions, 96 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:30:58,750 INFO L231 Difference]: Finished difference. Result has 19 places, 11 transitions, 36 flow [2023-08-25 21:30:58,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=36, PETRI_PLACES=19, PETRI_TRANSITIONS=11} [2023-08-25 21:30:58,751 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -13 predicate places. [2023-08-25 21:30:58,751 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 11 transitions, 36 flow [2023-08-25 21:30:58,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:30:58,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:30:58,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:30:58,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 21:30:58,754 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:30:58,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:30:58,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1354838610, now seen corresponding path program 2 times [2023-08-25 21:30:58,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:30:58,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61762822] [2023-08-25 21:30:58,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:30:58,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:30:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:30:58,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:30:58,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:30:58,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61762822] [2023-08-25 21:30:58,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61762822] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:30:58,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:30:58,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:30:58,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443676831] [2023-08-25 21:30:58,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:30:58,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 21:30:58,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:30:58,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 21:30:58,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 21:30:58,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 240 [2023-08-25 21:30:58,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 11 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:30:58,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:30:58,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 240 [2023-08-25 21:30:58,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:30:58,945 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-08-25 21:30:58,945 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 21:30:58,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 14 events. 2/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 1 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 37. Up to 11 conditions per place. [2023-08-25 21:30:58,946 INFO L140 encePairwiseOnDemand]: 236/240 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-25 21:30:58,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 11 transitions, 56 flow [2023-08-25 21:30:58,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 21:30:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 21:30:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2023-08-25 21:30:58,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2023-08-25 21:30:58,947 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 396 transitions. [2023-08-25 21:30:58,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 396 transitions. [2023-08-25 21:30:58,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:30:58,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 396 transitions. [2023-08-25 21:30:58,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:30:58,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 240.0) internal successors, (1200), 5 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:30:58,949 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 240.0) internal successors, (1200), 5 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:30:58,949 INFO L175 Difference]: Start difference. First operand has 19 places, 11 transitions, 36 flow. Second operand 4 states and 396 transitions. [2023-08-25 21:30:58,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 11 transitions, 56 flow [2023-08-25 21:30:58,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 11 transitions, 50 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 21:30:58,950 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-25 21:30:58,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-25 21:30:58,951 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -15 predicate places. [2023-08-25 21:30:58,951 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-25 21:30:58,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:30:58,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (21 of 22 remaining) [2023-08-25 21:30:58,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-25 21:30:58,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-25 21:30:58,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-25 21:30:58,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-25 21:30:58,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-25 21:30:58,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-25 21:30:58,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-25 21:30:58,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-25 21:30:58,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-25 21:30:58,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-25 21:30:58,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-25 21:30:58,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-25 21:30:58,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-25 21:30:58,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONASSERT (7 of 22 remaining) [2023-08-25 21:30:58,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 22 remaining) [2023-08-25 21:30:58,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 22 remaining) [2023-08-25 21:30:58,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-25 21:30:58,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-25 21:30:58,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-25 21:30:58,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-25 21:30:58,958 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-25 21:30:58,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 21:30:58,959 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-08-25 21:30:58,963 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 21:30:58,963 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 21:30:58,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 09:30:58 BasicIcfg [2023-08-25 21:30:58,968 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 21:30:58,968 INFO L158 Benchmark]: Toolchain (without parser) took 3946.00ms. Allocated memory was 346.0MB in the beginning and 429.9MB in the end (delta: 83.9MB). Free memory was 322.6MB in the beginning and 272.8MB in the end (delta: 49.9MB). Peak memory consumption was 133.1MB. Max. memory is 16.0GB. [2023-08-25 21:30:58,968 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 346.0MB. Free memory is still 322.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 21:30:58,969 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.59ms. Allocated memory is still 346.0MB. Free memory was 322.3MB in the beginning and 311.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-25 21:30:58,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.83ms. Allocated memory is still 346.0MB. Free memory was 311.5MB in the beginning and 309.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 21:30:58,971 INFO L158 Benchmark]: Boogie Preprocessor took 27.52ms. Allocated memory is still 346.0MB. Free memory was 309.6MB in the beginning and 308.2MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-25 21:30:58,971 INFO L158 Benchmark]: RCFGBuilder took 377.20ms. Allocated memory is still 346.0MB. Free memory was 308.2MB in the beginning and 288.8MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 21:30:58,977 INFO L158 Benchmark]: TraceAbstraction took 3336.05ms. Allocated memory was 346.0MB in the beginning and 429.9MB in the end (delta: 83.9MB). Free memory was 288.1MB in the beginning and 272.8MB in the end (delta: 15.4MB). Peak memory consumption was 97.5MB. Max. memory is 16.0GB. [2023-08-25 21:30:58,977 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 346.0MB. Free memory is still 322.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 157.59ms. Allocated memory is still 346.0MB. Free memory was 322.3MB in the beginning and 311.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.83ms. Allocated memory is still 346.0MB. Free memory was 311.5MB in the beginning and 309.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 27.52ms. Allocated memory is still 346.0MB. Free memory was 309.6MB in the beginning and 308.2MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 377.20ms. Allocated memory is still 346.0MB. Free memory was 308.2MB in the beginning and 288.8MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 3336.05ms. Allocated memory was 346.0MB in the beginning and 429.9MB in the end (delta: 83.9MB). Free memory was 288.1MB in the beginning and 272.8MB in the end (delta: 15.4MB). Peak memory consumption was 97.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 111 PlacesBefore, 32 PlacesAfterwards, 107 TransitionsBefore, 25 TransitionsAfterwards, 426 CoEnabledTransitionPairs, 8 FixpointIterations, 87 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 0 ConcurrentYvCompositions, 3 ChoiceCompositions, 122 TotalNumberOfCompositions, 577 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 478, independent: 461, independent conditional: 0, independent unconditional: 461, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 215, independent: 211, independent conditional: 0, independent unconditional: 211, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 478, independent: 250, independent conditional: 0, independent unconditional: 250, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 215, unknown conditional: 0, unknown unconditional: 215] , Statistics on independence cache: Total cache size (in pairs): 23, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 42]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 42]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 50]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 51]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 51]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 60]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 61]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 62]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 63]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 63]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 68]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 69]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 71]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 71]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 131 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-25 21:30:59,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...