/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/weaver/popl20-more-sum-array-hom.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 10:30:45,955 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 10:30:46,038 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 10:30:46,043 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 10:30:46,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 10:30:46,073 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 10:30:46,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 10:30:46,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 10:30:46,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 10:30:46,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 10:30:46,079 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 10:30:46,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 10:30:46,079 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 10:30:46,080 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 10:30:46,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 10:30:46,081 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 10:30:46,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 10:30:46,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 10:30:46,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 10:30:46,082 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 10:30:46,082 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 10:30:46,083 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 10:30:46,083 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 10:30:46,083 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 10:30:46,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 10:30:46,084 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 10:30:46,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 10:30:46,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 10:30:46,085 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 10:30:46,085 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 10:30:46,086 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 10:30:46,086 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 10:30:46,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 10:30:46,086 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 10:30:46,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 10:30:46,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 10:30:46,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 10:30:46,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 10:30:46,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 10:30:46,418 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 10:30:46,418 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 10:30:46,419 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2023-08-26 10:30:47,583 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 10:30:47,814 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 10:30:47,814 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2023-08-26 10:30:47,820 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11309184e/8dc38a4be7854db5add96f83a5fc75bd/FLAG9f3965cb4 [2023-08-26 10:30:47,830 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11309184e/8dc38a4be7854db5add96f83a5fc75bd [2023-08-26 10:30:47,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 10:30:47,833 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 10:30:47,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 10:30:47,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 10:30:47,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 10:30:47,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:30:47" (1/1) ... [2023-08-26 10:30:47,838 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f45681e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:30:47, skipping insertion in model container [2023-08-26 10:30:47,838 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:30:47" (1/1) ... [2023-08-26 10:30:47,856 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 10:30:48,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 10:30:48,029 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 10:30:48,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 10:30:48,086 INFO L206 MainTranslator]: Completed translation [2023-08-26 10:30:48,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:30:48 WrapperNode [2023-08-26 10:30:48,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 10:30:48,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 10:30:48,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 10:30:48,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 10:30:48,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:30:48" (1/1) ... [2023-08-26 10:30:48,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:30:48" (1/1) ... [2023-08-26 10:30:48,152 INFO L138 Inliner]: procedures = 25, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 160 [2023-08-26 10:30:48,152 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 10:30:48,153 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 10:30:48,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 10:30:48,153 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 10:30:48,162 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:30:48" (1/1) ... [2023-08-26 10:30:48,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:30:48" (1/1) ... [2023-08-26 10:30:48,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:30:48" (1/1) ... [2023-08-26 10:30:48,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:30:48" (1/1) ... [2023-08-26 10:30:48,196 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:30:48" (1/1) ... [2023-08-26 10:30:48,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:30:48" (1/1) ... [2023-08-26 10:30:48,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:30:48" (1/1) ... [2023-08-26 10:30:48,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:30:48" (1/1) ... [2023-08-26 10:30:48,206 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 10:30:48,207 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 10:30:48,207 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 10:30:48,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 10:30:48,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:30:48" (1/1) ... [2023-08-26 10:30:48,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 10:30:48,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:30:48,249 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 10:30:48,275 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 10:30:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 10:30:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 10:30:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 10:30:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 10:30:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 10:30:48,295 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 10:30:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 10:30:48,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 10:30:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 10:30:48,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 10:30:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 10:30:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 10:30:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 10:30:48,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 10:30:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 10:30:48,298 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 10:30:48,407 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 10:30:48,408 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 10:30:48,778 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 10:30:48,789 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 10:30:48,790 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-26 10:30:48,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:30:48 BoogieIcfgContainer [2023-08-26 10:30:48,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 10:30:48,794 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 10:30:48,794 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 10:30:48,797 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 10:30:48,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:30:47" (1/3) ... [2023-08-26 10:30:48,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7640e265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:30:48, skipping insertion in model container [2023-08-26 10:30:48,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:30:48" (2/3) ... [2023-08-26 10:30:48,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7640e265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:30:48, skipping insertion in model container [2023-08-26 10:30:48,798 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:30:48" (3/3) ... [2023-08-26 10:30:48,799 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2023-08-26 10:30:48,810 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 10:30:48,810 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-08-26 10:30:48,810 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 10:30:48,921 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 10:30:48,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 283 places, 286 transitions, 596 flow [2023-08-26 10:30:49,096 INFO L124 PetriNetUnfolderBase]: 13/283 cut-off events. [2023-08-26 10:30:49,097 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 10:30:49,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 283 events. 13/283 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 447 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 193. Up to 2 conditions per place. [2023-08-26 10:30:49,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 283 places, 286 transitions, 596 flow [2023-08-26 10:30:49,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 272 transitions, 562 flow [2023-08-26 10:30:49,121 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 10:30:49,135 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 272 transitions, 562 flow [2023-08-26 10:30:49,138 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 272 transitions, 562 flow [2023-08-26 10:30:49,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 272 transitions, 562 flow [2023-08-26 10:30:49,190 INFO L124 PetriNetUnfolderBase]: 13/272 cut-off events. [2023-08-26 10:30:49,190 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 10:30:49,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 272 events. 13/272 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 444 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 193. Up to 2 conditions per place. [2023-08-26 10:30:49,201 INFO L119 LiptonReduction]: Number of co-enabled transitions 11844 [2023-08-26 10:30:54,920 INFO L134 LiptonReduction]: Checked pairs total: 57737 [2023-08-26 10:30:54,921 INFO L136 LiptonReduction]: Total number of compositions: 242 [2023-08-26 10:30:54,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 10:30:54,938 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;@12c2aeee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 10:30:54,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-08-26 10:30:54,940 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 10:30:54,940 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 10:30:54,940 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 10:30:54,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:30:54,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 10:30:54,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:30:54,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:30:54,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1008, now seen corresponding path program 1 times [2023-08-26 10:30:54,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:30:54,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764082791] [2023-08-26 10:30:54,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:30:54,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:30:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:30:55,029 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 10:30:55,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:30:55,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764082791] [2023-08-26 10:30:55,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764082791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:30:55,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:30:55,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 10:30:55,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983560872] [2023-08-26 10:30:55,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:30:55,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 10:30:55,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:30:55,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 10:30:55,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 10:30:55,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 528 [2023-08-26 10:30:55,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 210 flow. Second operand has 2 states, 2 states have (on average 271.5) internal successors, (543), 2 states have internal predecessors, (543), 0 states have call successors, (0), 0 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 10:30:55,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:30:55,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 528 [2023-08-26 10:30:55,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:30:55,480 INFO L124 PetriNetUnfolderBase]: 1137/3063 cut-off events. [2023-08-26 10:30:55,481 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-26 10:30:55,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4736 conditions, 3063 events. 1137/3063 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 26411 event pairs, 770 based on Foata normal form. 524/2903 useless extension candidates. Maximal degree in co-relation 3998. Up to 1570 conditions per place. [2023-08-26 10:30:55,501 INFO L140 encePairwiseOnDemand]: 508/528 looper letters, 29 selfloop transitions, 0 changer transitions 0/76 dead transitions. [2023-08-26 10:30:55,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 76 transitions, 228 flow [2023-08-26 10:30:55,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 10:30:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 10:30:55,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 591 transitions. [2023-08-26 10:30:55,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5596590909090909 [2023-08-26 10:30:55,520 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 591 transitions. [2023-08-26 10:30:55,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 591 transitions. [2023-08-26 10:30:55,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:30:55,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 591 transitions. [2023-08-26 10:30:55,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 295.5) internal successors, (591), 2 states have internal predecessors, (591), 0 states have call successors, (0), 0 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 10:30:55,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 528.0) internal successors, (1584), 3 states have internal predecessors, (1584), 0 states have call successors, (0), 0 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 10:30:55,537 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 528.0) internal successors, (1584), 3 states have internal predecessors, (1584), 0 states have call successors, (0), 0 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 10:30:55,538 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 210 flow. Second operand 2 states and 591 transitions. [2023-08-26 10:30:55,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 76 transitions, 228 flow [2023-08-26 10:30:55,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 76 transitions, 216 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-26 10:30:55,547 INFO L231 Difference]: Finished difference. Result has 77 places, 76 transitions, 158 flow [2023-08-26 10:30:55,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=158, PETRI_PLACES=77, PETRI_TRANSITIONS=76} [2023-08-26 10:30:55,552 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -22 predicate places. [2023-08-26 10:30:55,552 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 76 transitions, 158 flow [2023-08-26 10:30:55,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 271.5) internal successors, (543), 2 states have internal predecessors, (543), 0 states have call successors, (0), 0 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 10:30:55,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:30:55,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 10:30:55,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 10:30:55,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:30:55,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:30:55,562 INFO L85 PathProgramCache]: Analyzing trace with hash -255989772, now seen corresponding path program 1 times [2023-08-26 10:30:55,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:30:55,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80040929] [2023-08-26 10:30:55,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:30:55,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:30:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:30:55,707 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 10:30:55,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:30:55,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80040929] [2023-08-26 10:30:55,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80040929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:30:55,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:30:55,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 10:30:55,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622854630] [2023-08-26 10:30:55,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:30:55,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 10:30:55,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:30:55,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 10:30:55,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 10:30:55,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 528 [2023-08-26 10:30:55,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 76 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 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 10:30:55,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:30:55,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 528 [2023-08-26 10:30:55,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:30:55,978 INFO L124 PetriNetUnfolderBase]: 1440/3280 cut-off events. [2023-08-26 10:30:55,978 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-08-26 10:30:55,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5337 conditions, 3280 events. 1440/3280 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 25702 event pairs, 1067 based on Foata normal form. 0/2575 useless extension candidates. Maximal degree in co-relation 5334. Up to 2017 conditions per place. [2023-08-26 10:30:56,002 INFO L140 encePairwiseOnDemand]: 525/528 looper letters, 30 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2023-08-26 10:30:56,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 74 transitions, 216 flow [2023-08-26 10:30:56,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 10:30:56,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 10:30:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 801 transitions. [2023-08-26 10:30:56,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056818181818182 [2023-08-26 10:30:56,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 801 transitions. [2023-08-26 10:30:56,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 801 transitions. [2023-08-26 10:30:56,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:30:56,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 801 transitions. [2023-08-26 10:30:56,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 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 10:30:56,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 528.0) internal successors, (2112), 4 states have internal predecessors, (2112), 0 states have call successors, (0), 0 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 10:30:56,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 528.0) internal successors, (2112), 4 states have internal predecessors, (2112), 0 states have call successors, (0), 0 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 10:30:56,011 INFO L175 Difference]: Start difference. First operand has 77 places, 76 transitions, 158 flow. Second operand 3 states and 801 transitions. [2023-08-26 10:30:56,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 74 transitions, 216 flow [2023-08-26 10:30:56,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 74 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 10:30:56,013 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 156 flow [2023-08-26 10:30:56,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-08-26 10:30:56,014 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -22 predicate places. [2023-08-26 10:30:56,014 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 156 flow [2023-08-26 10:30:56,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 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 10:30:56,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:30:56,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:30:56,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 10:30:56,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:30:56,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:30:56,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1192812730, now seen corresponding path program 1 times [2023-08-26 10:30:56,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:30:56,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511316544] [2023-08-26 10:30:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:30:56,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:30:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:30:56,064 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 10:30:56,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:30:56,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511316544] [2023-08-26 10:30:56,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511316544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:30:56,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:30:56,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 10:30:56,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253154697] [2023-08-26 10:30:56,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:30:56,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 10:30:56,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:30:56,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 10:30:56,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 10:30:56,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 528 [2023-08-26 10:30:56,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 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 10:30:56,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:30:56,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 528 [2023-08-26 10:30:56,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:30:56,509 INFO L124 PetriNetUnfolderBase]: 2065/4335 cut-off events. [2023-08-26 10:30:56,510 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-26 10:30:56,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 4335 events. 2065/4335 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 34315 event pairs, 417 based on Foata normal form. 0/3568 useless extension candidates. Maximal degree in co-relation 7268. Up to 2563 conditions per place. [2023-08-26 10:30:56,538 INFO L140 encePairwiseOnDemand]: 522/528 looper letters, 50 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2023-08-26 10:30:56,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 92 transitions, 303 flow [2023-08-26 10:30:56,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 10:30:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 10:30:56,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 833 transitions. [2023-08-26 10:30:56,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258838383838383 [2023-08-26 10:30:56,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 833 transitions. [2023-08-26 10:30:56,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 833 transitions. [2023-08-26 10:30:56,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:30:56,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 833 transitions. [2023-08-26 10:30:56,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 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 10:30:56,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 528.0) internal successors, (2112), 4 states have internal predecessors, (2112), 0 states have call successors, (0), 0 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 10:30:56,549 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 528.0) internal successors, (2112), 4 states have internal predecessors, (2112), 0 states have call successors, (0), 0 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 10:30:56,549 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 156 flow. Second operand 3 states and 833 transitions. [2023-08-26 10:30:56,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 92 transitions, 303 flow [2023-08-26 10:30:56,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 92 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 10:30:56,552 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 170 flow [2023-08-26 10:30:56,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2023-08-26 10:30:56,553 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -23 predicate places. [2023-08-26 10:30:56,553 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 170 flow [2023-08-26 10:30:56,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 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 10:30:56,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:30:56,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:30:56,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 10:30:56,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:30:56,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:30:56,555 INFO L85 PathProgramCache]: Analyzing trace with hash -920308974, now seen corresponding path program 1 times [2023-08-26 10:30:56,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:30:56,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068294698] [2023-08-26 10:30:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:30:56,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:30:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:30:56,599 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 10:30:56,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:30:56,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068294698] [2023-08-26 10:30:56,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068294698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:30:56,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:30:56,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 10:30:56,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313227356] [2023-08-26 10:30:56,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:30:56,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 10:30:56,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:30:56,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 10:30:56,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 10:30:56,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 528 [2023-08-26 10:30:56,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 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 10:30:56,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:30:56,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 528 [2023-08-26 10:30:56,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:30:56,902 INFO L124 PetriNetUnfolderBase]: 1882/4095 cut-off events. [2023-08-26 10:30:56,903 INFO L125 PetriNetUnfolderBase]: For 319/319 co-relation queries the response was YES. [2023-08-26 10:30:56,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7343 conditions, 4095 events. 1882/4095 cut-off events. For 319/319 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 32165 event pairs, 1347 based on Foata normal form. 0/3351 useless extension candidates. Maximal degree in co-relation 7339. Up to 2666 conditions per place. [2023-08-26 10:30:56,936 INFO L140 encePairwiseOnDemand]: 525/528 looper letters, 33 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-08-26 10:30:56,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 234 flow [2023-08-26 10:30:56,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 10:30:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 10:30:56,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 801 transitions. [2023-08-26 10:30:56,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056818181818182 [2023-08-26 10:30:56,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 801 transitions. [2023-08-26 10:30:56,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 801 transitions. [2023-08-26 10:30:56,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:30:56,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 801 transitions. [2023-08-26 10:30:56,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 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 10:30:56,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 528.0) internal successors, (2112), 4 states have internal predecessors, (2112), 0 states have call successors, (0), 0 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 10:30:56,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 528.0) internal successors, (2112), 4 states have internal predecessors, (2112), 0 states have call successors, (0), 0 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 10:30:56,946 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 170 flow. Second operand 3 states and 801 transitions. [2023-08-26 10:30:56,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 234 flow [2023-08-26 10:30:56,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 234 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 10:30:56,949 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 168 flow [2023-08-26 10:30:56,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2023-08-26 10:30:56,950 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -23 predicate places. [2023-08-26 10:30:56,950 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 168 flow [2023-08-26 10:30:56,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 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 10:30:56,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:30:56,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:30:56,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 10:30:56,952 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:30:56,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:30:56,952 INFO L85 PathProgramCache]: Analyzing trace with hash 492128347, now seen corresponding path program 1 times [2023-08-26 10:30:56,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:30:56,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997615830] [2023-08-26 10:30:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:30:56,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:30:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:30:57,343 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 10:30:57,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:30:57,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997615830] [2023-08-26 10:30:57,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997615830] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:30:57,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:30:57,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:30:57,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038688488] [2023-08-26 10:30:57,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:30:57,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:30:57,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:30:57,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:30:57,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:30:57,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 528 [2023-08-26 10:30:57,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 168 flow. Second operand has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 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 10:30:57,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:30:57,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 528 [2023-08-26 10:30:57,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:30:59,525 INFO L124 PetriNetUnfolderBase]: 21013/28706 cut-off events. [2023-08-26 10:30:59,526 INFO L125 PetriNetUnfolderBase]: For 2182/2182 co-relation queries the response was YES. [2023-08-26 10:30:59,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59710 conditions, 28706 events. 21013/28706 cut-off events. For 2182/2182 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 183823 event pairs, 2027 based on Foata normal form. 0/23002 useless extension candidates. Maximal degree in co-relation 59705. Up to 11298 conditions per place. [2023-08-26 10:30:59,691 INFO L140 encePairwiseOnDemand]: 523/528 looper letters, 180 selfloop transitions, 4 changer transitions 0/195 dead transitions. [2023-08-26 10:30:59,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 195 transitions, 842 flow [2023-08-26 10:30:59,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:30:59,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:30:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1508 transitions. [2023-08-26 10:30:59,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.476010101010101 [2023-08-26 10:30:59,696 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1508 transitions. [2023-08-26 10:30:59,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1508 transitions. [2023-08-26 10:30:59,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:30:59,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1508 transitions. [2023-08-26 10:30:59,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.33333333333334) internal successors, (1508), 6 states have internal predecessors, (1508), 0 states have call successors, (0), 0 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 10:30:59,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 528.0) internal successors, (3696), 7 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 10:30:59,708 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 528.0) internal successors, (3696), 7 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 10:30:59,708 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 168 flow. Second operand 6 states and 1508 transitions. [2023-08-26 10:30:59,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 195 transitions, 842 flow [2023-08-26 10:30:59,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 195 transitions, 841 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 10:30:59,711 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 173 flow [2023-08-26 10:30:59,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2023-08-26 10:30:59,712 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -20 predicate places. [2023-08-26 10:30:59,713 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 173 flow [2023-08-26 10:30:59,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 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 10:30:59,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:30:59,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:30:59,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 10:30:59,714 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:30:59,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:30:59,714 INFO L85 PathProgramCache]: Analyzing trace with hash 684268234, now seen corresponding path program 1 times [2023-08-26 10:30:59,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:30:59,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973667611] [2023-08-26 10:30:59,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:30:59,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:30:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:30:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:30:59,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:30:59,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973667611] [2023-08-26 10:30:59,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973667611] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:30:59,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:30:59,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:30:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057101437] [2023-08-26 10:30:59,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:30:59,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:30:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:30:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:30:59,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:30:59,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 528 [2023-08-26 10:30:59,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 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 10:30:59,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:30:59,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 528 [2023-08-26 10:30:59,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:01,911 INFO L124 PetriNetUnfolderBase]: 22499/31433 cut-off events. [2023-08-26 10:31:01,912 INFO L125 PetriNetUnfolderBase]: For 6556/6556 co-relation queries the response was YES. [2023-08-26 10:31:01,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69512 conditions, 31433 events. 22499/31433 cut-off events. For 6556/6556 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 199713 event pairs, 11468 based on Foata normal form. 0/26691 useless extension candidates. Maximal degree in co-relation 69507. Up to 19960 conditions per place. [2023-08-26 10:31:02,059 INFO L140 encePairwiseOnDemand]: 522/528 looper letters, 173 selfloop transitions, 5 changer transitions 0/186 dead transitions. [2023-08-26 10:31:02,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 186 transitions, 815 flow [2023-08-26 10:31:02,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:31:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:31:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1484 transitions. [2023-08-26 10:31:02,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684343434343434 [2023-08-26 10:31:02,063 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1484 transitions. [2023-08-26 10:31:02,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1484 transitions. [2023-08-26 10:31:02,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:02,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1484 transitions. [2023-08-26 10:31:02,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 247.33333333333334) internal successors, (1484), 6 states have internal predecessors, (1484), 0 states have call successors, (0), 0 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 10:31:02,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 528.0) internal successors, (3696), 7 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 10:31:02,073 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 528.0) internal successors, (3696), 7 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 10:31:02,073 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 173 flow. Second operand 6 states and 1484 transitions. [2023-08-26 10:31:02,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 186 transitions, 815 flow [2023-08-26 10:31:02,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 186 transitions, 780 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:31:02,089 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 174 flow [2023-08-26 10:31:02,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2023-08-26 10:31:02,092 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -20 predicate places. [2023-08-26 10:31:02,094 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 174 flow [2023-08-26 10:31:02,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 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 10:31:02,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:02,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:02,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 10:31:02,096 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:02,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:02,096 INFO L85 PathProgramCache]: Analyzing trace with hash 246847580, now seen corresponding path program 1 times [2023-08-26 10:31:02,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:02,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486307572] [2023-08-26 10:31:02,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:02,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:02,199 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 10:31:02,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:02,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486307572] [2023-08-26 10:31:02,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486307572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:31:02,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:31:02,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 10:31:02,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755541862] [2023-08-26 10:31:02,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:31:02,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 10:31:02,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:02,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 10:31:02,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 10:31:02,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 528 [2023-08-26 10:31:02,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 230.8) internal successors, (1154), 5 states have internal predecessors, (1154), 0 states have call successors, (0), 0 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 10:31:02,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:02,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 528 [2023-08-26 10:31:02,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:02,775 INFO L124 PetriNetUnfolderBase]: 3431/7114 cut-off events. [2023-08-26 10:31:02,775 INFO L125 PetriNetUnfolderBase]: For 709/709 co-relation queries the response was YES. [2023-08-26 10:31:02,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13328 conditions, 7114 events. 3431/7114 cut-off events. For 709/709 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 60837 event pairs, 2283 based on Foata normal form. 0/5936 useless extension candidates. Maximal degree in co-relation 13323. Up to 3754 conditions per place. [2023-08-26 10:31:02,806 INFO L140 encePairwiseOnDemand]: 522/528 looper letters, 79 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2023-08-26 10:31:02,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 115 transitions, 465 flow [2023-08-26 10:31:02,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 10:31:02,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 10:31:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1218 transitions. [2023-08-26 10:31:02,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136363636363636 [2023-08-26 10:31:02,810 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1218 transitions. [2023-08-26 10:31:02,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1218 transitions. [2023-08-26 10:31:02,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:02,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1218 transitions. [2023-08-26 10:31:02,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 243.6) internal successors, (1218), 5 states have internal predecessors, (1218), 0 states have call successors, (0), 0 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 10:31:02,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 528.0) internal successors, (3168), 6 states have internal predecessors, (3168), 0 states have call successors, (0), 0 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 10:31:02,818 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 528.0) internal successors, (3168), 6 states have internal predecessors, (3168), 0 states have call successors, (0), 0 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 10:31:02,818 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 174 flow. Second operand 5 states and 1218 transitions. [2023-08-26 10:31:02,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 115 transitions, 465 flow [2023-08-26 10:31:02,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 115 transitions, 451 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 10:31:02,820 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 201 flow [2023-08-26 10:31:02,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2023-08-26 10:31:02,821 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -18 predicate places. [2023-08-26 10:31:02,821 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 201 flow [2023-08-26 10:31:02,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 230.8) internal successors, (1154), 5 states have internal predecessors, (1154), 0 states have call successors, (0), 0 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 10:31:02,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:02,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:02,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 10:31:02,822 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:02,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:02,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1946467387, now seen corresponding path program 1 times [2023-08-26 10:31:02,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:02,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980708045] [2023-08-26 10:31:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:02,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:03,051 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 10:31:03,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:03,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980708045] [2023-08-26 10:31:03,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980708045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:31:03,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:31:03,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:31:03,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080590887] [2023-08-26 10:31:03,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:31:03,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:31:03,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:03,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:31:03,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:31:03,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 528 [2023-08-26 10:31:03,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 220.5) internal successors, (1323), 6 states have internal predecessors, (1323), 0 states have call successors, (0), 0 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 10:31:03,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:03,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 528 [2023-08-26 10:31:03,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:05,805 INFO L124 PetriNetUnfolderBase]: 26493/37640 cut-off events. [2023-08-26 10:31:05,805 INFO L125 PetriNetUnfolderBase]: For 8847/8847 co-relation queries the response was YES. [2023-08-26 10:31:05,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84519 conditions, 37640 events. 26493/37640 cut-off events. For 8847/8847 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 251033 event pairs, 15390 based on Foata normal form. 0/32835 useless extension candidates. Maximal degree in co-relation 84511. Up to 25902 conditions per place. [2023-08-26 10:31:05,981 INFO L140 encePairwiseOnDemand]: 522/528 looper letters, 192 selfloop transitions, 5 changer transitions 0/205 dead transitions. [2023-08-26 10:31:05,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 205 transitions, 885 flow [2023-08-26 10:31:05,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:31:05,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:31:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1499 transitions. [2023-08-26 10:31:05,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47316919191919193 [2023-08-26 10:31:05,985 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1499 transitions. [2023-08-26 10:31:05,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1499 transitions. [2023-08-26 10:31:05,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:05,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1499 transitions. [2023-08-26 10:31:05,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.83333333333334) internal successors, (1499), 6 states have internal predecessors, (1499), 0 states have call successors, (0), 0 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 10:31:05,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 528.0) internal successors, (3696), 7 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 10:31:05,994 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 528.0) internal successors, (3696), 7 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 10:31:05,994 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 201 flow. Second operand 6 states and 1499 transitions. [2023-08-26 10:31:05,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 205 transitions, 885 flow [2023-08-26 10:31:06,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 205 transitions, 881 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 10:31:06,003 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 205 flow [2023-08-26 10:31:06,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2023-08-26 10:31:06,003 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -15 predicate places. [2023-08-26 10:31:06,004 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 205 flow [2023-08-26 10:31:06,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.5) internal successors, (1323), 6 states have internal predecessors, (1323), 0 states have call successors, (0), 0 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 10:31:06,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:06,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:06,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 10:31:06,005 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:06,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:06,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1510538041, now seen corresponding path program 1 times [2023-08-26 10:31:06,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:06,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16154474] [2023-08-26 10:31:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:06,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:06,067 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 10:31:06,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:06,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16154474] [2023-08-26 10:31:06,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16154474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:31:06,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:31:06,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 10:31:06,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209836674] [2023-08-26 10:31:06,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:31:06,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 10:31:06,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:06,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 10:31:06,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 10:31:06,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 528 [2023-08-26 10:31:06,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 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 10:31:06,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:06,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 528 [2023-08-26 10:31:06,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:06,473 INFO L124 PetriNetUnfolderBase]: 2314/4691 cut-off events. [2023-08-26 10:31:06,473 INFO L125 PetriNetUnfolderBase]: For 953/1014 co-relation queries the response was YES. [2023-08-26 10:31:06,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9783 conditions, 4691 events. 2314/4691 cut-off events. For 953/1014 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 36394 event pairs, 1467 based on Foata normal form. 61/3806 useless extension candidates. Maximal degree in co-relation 9775. Up to 2890 conditions per place. [2023-08-26 10:31:06,495 INFO L140 encePairwiseOnDemand]: 522/528 looper letters, 64 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2023-08-26 10:31:06,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 103 transitions, 425 flow [2023-08-26 10:31:06,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 10:31:06,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 10:31:06,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1210 transitions. [2023-08-26 10:31:06,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-08-26 10:31:06,499 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1210 transitions. [2023-08-26 10:31:06,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1210 transitions. [2023-08-26 10:31:06,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:06,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1210 transitions. [2023-08-26 10:31:06,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 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 10:31:06,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 528.0) internal successors, (3168), 6 states have internal predecessors, (3168), 0 states have call successors, (0), 0 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 10:31:06,507 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 528.0) internal successors, (3168), 6 states have internal predecessors, (3168), 0 states have call successors, (0), 0 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 10:31:06,508 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 205 flow. Second operand 5 states and 1210 transitions. [2023-08-26 10:31:06,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 103 transitions, 425 flow [2023-08-26 10:31:06,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 103 transitions, 415 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 10:31:06,512 INFO L231 Difference]: Finished difference. Result has 85 places, 75 transitions, 220 flow [2023-08-26 10:31:06,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=85, PETRI_TRANSITIONS=75} [2023-08-26 10:31:06,513 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -14 predicate places. [2023-08-26 10:31:06,513 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 75 transitions, 220 flow [2023-08-26 10:31:06,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 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 10:31:06,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:06,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:06,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 10:31:06,514 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:06,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:06,515 INFO L85 PathProgramCache]: Analyzing trace with hash -263475994, now seen corresponding path program 1 times [2023-08-26 10:31:06,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:06,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487365692] [2023-08-26 10:31:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:06,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:06,808 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 10:31:06,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:06,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487365692] [2023-08-26 10:31:06,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487365692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:31:06,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:31:06,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:31:06,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668695792] [2023-08-26 10:31:06,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:31:06,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:31:06,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:06,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:31:06,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:31:06,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 528 [2023-08-26 10:31:06,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 75 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 0 states have call successors, (0), 0 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 10:31:06,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:06,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 528 [2023-08-26 10:31:06,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:08,910 INFO L124 PetriNetUnfolderBase]: 20126/28797 cut-off events. [2023-08-26 10:31:08,911 INFO L125 PetriNetUnfolderBase]: For 6781/7056 co-relation queries the response was YES. [2023-08-26 10:31:08,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66206 conditions, 28797 events. 20126/28797 cut-off events. For 6781/7056 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 187956 event pairs, 9663 based on Foata normal form. 275/25496 useless extension candidates. Maximal degree in co-relation 66196. Up to 16820 conditions per place. [2023-08-26 10:31:09,025 INFO L140 encePairwiseOnDemand]: 522/528 looper letters, 207 selfloop transitions, 5 changer transitions 0/222 dead transitions. [2023-08-26 10:31:09,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 222 transitions, 982 flow [2023-08-26 10:31:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:31:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:31:09,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1513 transitions. [2023-08-26 10:31:09,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4775883838383838 [2023-08-26 10:31:09,029 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1513 transitions. [2023-08-26 10:31:09,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1513 transitions. [2023-08-26 10:31:09,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:09,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1513 transitions. [2023-08-26 10:31:09,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 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 10:31:09,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 528.0) internal successors, (3696), 7 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 10:31:09,038 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 528.0) internal successors, (3696), 7 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 10:31:09,038 INFO L175 Difference]: Start difference. First operand has 85 places, 75 transitions, 220 flow. Second operand 6 states and 1513 transitions. [2023-08-26 10:31:09,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 222 transitions, 982 flow [2023-08-26 10:31:09,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 222 transitions, 977 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 10:31:09,063 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 223 flow [2023-08-26 10:31:09,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2023-08-26 10:31:09,064 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -12 predicate places. [2023-08-26 10:31:09,064 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 223 flow [2023-08-26 10:31:09,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 0 states have call successors, (0), 0 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 10:31:09,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:09,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:09,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 10:31:09,065 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:09,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:09,065 INFO L85 PathProgramCache]: Analyzing trace with hash 13821162, now seen corresponding path program 1 times [2023-08-26 10:31:09,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:09,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179340679] [2023-08-26 10:31:09,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:09,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:09,352 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 10:31:09,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:09,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179340679] [2023-08-26 10:31:09,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179340679] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:31:09,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:31:09,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:31:09,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32052673] [2023-08-26 10:31:09,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:31:09,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:31:09,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:31:09,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:31:09,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 528 [2023-08-26 10:31:09,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 226.16666666666666) internal successors, (1357), 6 states have internal predecessors, (1357), 0 states have call successors, (0), 0 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 10:31:09,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:09,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 528 [2023-08-26 10:31:09,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:10,923 INFO L124 PetriNetUnfolderBase]: 16614/24223 cut-off events. [2023-08-26 10:31:10,923 INFO L125 PetriNetUnfolderBase]: For 6874/7123 co-relation queries the response was YES. [2023-08-26 10:31:10,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58329 conditions, 24223 events. 16614/24223 cut-off events. For 6874/7123 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 161792 event pairs, 12176 based on Foata normal form. 249/21323 useless extension candidates. Maximal degree in co-relation 58319. Up to 20806 conditions per place. [2023-08-26 10:31:11,030 INFO L140 encePairwiseOnDemand]: 523/528 looper letters, 145 selfloop transitions, 4 changer transitions 0/161 dead transitions. [2023-08-26 10:31:11,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 161 transitions, 863 flow [2023-08-26 10:31:11,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:31:11,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:31:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1460 transitions. [2023-08-26 10:31:11,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46085858585858586 [2023-08-26 10:31:11,035 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1460 transitions. [2023-08-26 10:31:11,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1460 transitions. [2023-08-26 10:31:11,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:11,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1460 transitions. [2023-08-26 10:31:11,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.33333333333334) internal successors, (1460), 6 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 10:31:11,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 528.0) internal successors, (3696), 7 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 10:31:11,167 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 528.0) internal successors, (3696), 7 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 10:31:11,168 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 223 flow. Second operand 6 states and 1460 transitions. [2023-08-26 10:31:11,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 161 transitions, 863 flow [2023-08-26 10:31:11,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 161 transitions, 813 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 10:31:11,229 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 219 flow [2023-08-26 10:31:11,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2023-08-26 10:31:11,230 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -13 predicate places. [2023-08-26 10:31:11,230 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 219 flow [2023-08-26 10:31:11,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 226.16666666666666) internal successors, (1357), 6 states have internal predecessors, (1357), 0 states have call successors, (0), 0 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 10:31:11,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:11,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:11,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 10:31:11,232 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:11,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:11,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1525095614, now seen corresponding path program 1 times [2023-08-26 10:31:11,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:11,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942103954] [2023-08-26 10:31:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:11,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:11,515 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 10:31:11,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:11,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942103954] [2023-08-26 10:31:11,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942103954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:31:11,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:31:11,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:31:11,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299247409] [2023-08-26 10:31:11,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:31:11,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:31:11,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:11,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:31:11,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:31:11,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 528 [2023-08-26 10:31:11,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 227.33333333333334) internal successors, (1364), 6 states have internal predecessors, (1364), 0 states have call successors, (0), 0 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 10:31:11,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:11,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 528 [2023-08-26 10:31:11,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:13,009 INFO L124 PetriNetUnfolderBase]: 16597/24209 cut-off events. [2023-08-26 10:31:13,009 INFO L125 PetriNetUnfolderBase]: For 6056/6305 co-relation queries the response was YES. [2023-08-26 10:31:13,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55947 conditions, 24209 events. 16597/24209 cut-off events. For 6056/6305 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 161126 event pairs, 13041 based on Foata normal form. 249/21330 useless extension candidates. Maximal degree in co-relation 55937. Up to 22412 conditions per place. [2023-08-26 10:31:13,116 INFO L140 encePairwiseOnDemand]: 523/528 looper letters, 104 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2023-08-26 10:31:13,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 120 transitions, 605 flow [2023-08-26 10:31:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:31:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:31:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1427 transitions. [2023-08-26 10:31:13,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45044191919191917 [2023-08-26 10:31:13,120 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1427 transitions. [2023-08-26 10:31:13,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1427 transitions. [2023-08-26 10:31:13,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:13,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1427 transitions. [2023-08-26 10:31:13,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 237.83333333333334) internal successors, (1427), 6 states have internal predecessors, (1427), 0 states have call successors, (0), 0 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 10:31:13,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 528.0) internal successors, (3696), 7 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 10:31:13,128 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 528.0) internal successors, (3696), 7 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 10:31:13,128 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 219 flow. Second operand 6 states and 1427 transitions. [2023-08-26 10:31:13,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 120 transitions, 605 flow [2023-08-26 10:31:13,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 120 transitions, 598 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:31:13,148 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 218 flow [2023-08-26 10:31:13,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2023-08-26 10:31:13,149 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -13 predicate places. [2023-08-26 10:31:13,149 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 218 flow [2023-08-26 10:31:13,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 227.33333333333334) internal successors, (1364), 6 states have internal predecessors, (1364), 0 states have call successors, (0), 0 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 10:31:13,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:13,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:13,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 10:31:13,150 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:13,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:13,150 INFO L85 PathProgramCache]: Analyzing trace with hash -2118221305, now seen corresponding path program 1 times [2023-08-26 10:31:13,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:13,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034053990] [2023-08-26 10:31:13,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:13,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:13,407 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 10:31:13,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:13,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034053990] [2023-08-26 10:31:13,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034053990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:31:13,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:31:13,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 10:31:13,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951805195] [2023-08-26 10:31:13,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:31:13,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 10:31:13,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:13,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 10:31:13,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 10:31:13,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 528 [2023-08-26 10:31:13,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 10:31:13,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:13,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 528 [2023-08-26 10:31:13,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:13,809 INFO L124 PetriNetUnfolderBase]: 2048/4608 cut-off events. [2023-08-26 10:31:13,810 INFO L125 PetriNetUnfolderBase]: For 1273/1342 co-relation queries the response was YES. [2023-08-26 10:31:13,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9461 conditions, 4608 events. 2048/4608 cut-off events. For 1273/1342 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 37948 event pairs, 564 based on Foata normal form. 71/3995 useless extension candidates. Maximal degree in co-relation 9451. Up to 1962 conditions per place. [2023-08-26 10:31:13,827 INFO L140 encePairwiseOnDemand]: 523/528 looper letters, 59 selfloop transitions, 4 changer transitions 1/99 dead transitions. [2023-08-26 10:31:13,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 99 transitions, 435 flow [2023-08-26 10:31:13,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 10:31:13,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 10:31:13,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 846 transitions. [2023-08-26 10:31:13,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2023-08-26 10:31:13,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 846 transitions. [2023-08-26 10:31:13,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 846 transitions. [2023-08-26 10:31:13,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:13,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 846 transitions. [2023-08-26 10:31:13,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 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 10:31:13,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 528.0) internal successors, (2112), 4 states have internal predecessors, (2112), 0 states have call successors, (0), 0 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 10:31:13,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 528.0) internal successors, (2112), 4 states have internal predecessors, (2112), 0 states have call successors, (0), 0 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 10:31:13,834 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 218 flow. Second operand 3 states and 846 transitions. [2023-08-26 10:31:13,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 99 transitions, 435 flow [2023-08-26 10:31:13,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 99 transitions, 426 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:31:13,839 INFO L231 Difference]: Finished difference. Result has 85 places, 75 transitions, 237 flow [2023-08-26 10:31:13,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=85, PETRI_TRANSITIONS=75} [2023-08-26 10:31:13,840 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -14 predicate places. [2023-08-26 10:31:13,840 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 75 transitions, 237 flow [2023-08-26 10:31:13,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 10:31:13,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:13,840 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:13,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 10:31:13,841 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:13,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:13,841 INFO L85 PathProgramCache]: Analyzing trace with hash -869764124, now seen corresponding path program 1 times [2023-08-26 10:31:13,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:13,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655578421] [2023-08-26 10:31:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:13,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:31:13,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:13,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655578421] [2023-08-26 10:31:13,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655578421] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:31:13,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:31:13,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 10:31:13,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005900859] [2023-08-26 10:31:13,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:31:13,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 10:31:13,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:13,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 10:31:13,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 10:31:13,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 528 [2023-08-26 10:31:13,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 75 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 239.4) internal successors, (1197), 5 states have internal predecessors, (1197), 0 states have call successors, (0), 0 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 10:31:13,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:13,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 528 [2023-08-26 10:31:13,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:14,513 INFO L124 PetriNetUnfolderBase]: 3564/7329 cut-off events. [2023-08-26 10:31:14,513 INFO L125 PetriNetUnfolderBase]: For 2078/2126 co-relation queries the response was YES. [2023-08-26 10:31:14,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16029 conditions, 7329 events. 3564/7329 cut-off events. For 2078/2126 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 59562 event pairs, 2589 based on Foata normal form. 24/6445 useless extension candidates. Maximal degree in co-relation 16018. Up to 4911 conditions per place. [2023-08-26 10:31:14,537 INFO L140 encePairwiseOnDemand]: 522/528 looper letters, 40 selfloop transitions, 2 changer transitions 26/96 dead transitions. [2023-08-26 10:31:14,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 96 transitions, 433 flow [2023-08-26 10:31:14,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 10:31:14,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 10:31:14,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1232 transitions. [2023-08-26 10:31:14,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-26 10:31:14,541 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1232 transitions. [2023-08-26 10:31:14,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1232 transitions. [2023-08-26 10:31:14,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:14,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1232 transitions. [2023-08-26 10:31:14,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 246.4) internal successors, (1232), 5 states have internal predecessors, (1232), 0 states have call successors, (0), 0 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 10:31:14,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 528.0) internal successors, (3168), 6 states have internal predecessors, (3168), 0 states have call successors, (0), 0 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 10:31:14,547 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 528.0) internal successors, (3168), 6 states have internal predecessors, (3168), 0 states have call successors, (0), 0 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 10:31:14,547 INFO L175 Difference]: Start difference. First operand has 85 places, 75 transitions, 237 flow. Second operand 5 states and 1232 transitions. [2023-08-26 10:31:14,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 96 transitions, 433 flow [2023-08-26 10:31:14,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 10:31:14,553 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 210 flow [2023-08-26 10:31:14,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2023-08-26 10:31:14,553 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -9 predicate places. [2023-08-26 10:31:14,553 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 210 flow [2023-08-26 10:31:14,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 239.4) internal successors, (1197), 5 states have internal predecessors, (1197), 0 states have call successors, (0), 0 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 10:31:14,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:14,554 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:14,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 10:31:14,554 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:14,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:14,555 INFO L85 PathProgramCache]: Analyzing trace with hash 408616857, now seen corresponding path program 1 times [2023-08-26 10:31:14,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:14,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671641036] [2023-08-26 10:31:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:14,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:14,653 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 10:31:14,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:14,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671641036] [2023-08-26 10:31:14,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671641036] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:31:14,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351681200] [2023-08-26 10:31:14,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:14,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:31:14,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:31:14,661 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 10:31:14,666 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 10:31:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:14,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 10:31:14,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:31:14,882 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 10:31:14,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:31:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:31:14,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351681200] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 10:31:14,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 10:31:14,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-26 10:31:14,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135234208] [2023-08-26 10:31:14,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:31:14,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 10:31:14,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:14,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 10:31:14,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-26 10:31:14,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 528 [2023-08-26 10:31:14,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 238.8) internal successors, (1194), 5 states have internal predecessors, (1194), 0 states have call successors, (0), 0 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 10:31:14,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:14,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 528 [2023-08-26 10:31:14,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:15,469 INFO L124 PetriNetUnfolderBase]: 3398/6571 cut-off events. [2023-08-26 10:31:15,469 INFO L125 PetriNetUnfolderBase]: For 2066/2107 co-relation queries the response was YES. [2023-08-26 10:31:15,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14722 conditions, 6571 events. 3398/6571 cut-off events. For 2066/2107 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 49454 event pairs, 1603 based on Foata normal form. 4/5745 useless extension candidates. Maximal degree in co-relation 14709. Up to 3676 conditions per place. [2023-08-26 10:31:15,506 INFO L140 encePairwiseOnDemand]: 522/528 looper letters, 56 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2023-08-26 10:31:15,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 90 transitions, 406 flow [2023-08-26 10:31:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 10:31:15,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 10:31:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1223 transitions. [2023-08-26 10:31:15,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46325757575757576 [2023-08-26 10:31:15,509 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1223 transitions. [2023-08-26 10:31:15,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1223 transitions. [2023-08-26 10:31:15,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:15,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1223 transitions. [2023-08-26 10:31:15,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.6) internal successors, (1223), 5 states have internal predecessors, (1223), 0 states have call successors, (0), 0 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 10:31:15,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 528.0) internal successors, (3168), 6 states have internal predecessors, (3168), 0 states have call successors, (0), 0 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 10:31:15,515 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 528.0) internal successors, (3168), 6 states have internal predecessors, (3168), 0 states have call successors, (0), 0 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 10:31:15,515 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 210 flow. Second operand 5 states and 1223 transitions. [2023-08-26 10:31:15,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 90 transitions, 406 flow [2023-08-26 10:31:15,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 370 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-08-26 10:31:15,522 INFO L231 Difference]: Finished difference. Result has 82 places, 71 transitions, 213 flow [2023-08-26 10:31:15,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=82, PETRI_TRANSITIONS=71} [2023-08-26 10:31:15,523 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -17 predicate places. [2023-08-26 10:31:15,523 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 71 transitions, 213 flow [2023-08-26 10:31:15,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 238.8) internal successors, (1194), 5 states have internal predecessors, (1194), 0 states have call successors, (0), 0 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 10:31:15,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:15,524 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:15,529 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 10:31:15,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-26 10:31:15,724 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:15,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:15,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1973330851, now seen corresponding path program 1 times [2023-08-26 10:31:15,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:15,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563794868] [2023-08-26 10:31:15,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:15,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:31:15,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:15,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563794868] [2023-08-26 10:31:15,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563794868] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:31:15,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144697231] [2023-08-26 10:31:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:15,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:31:15,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:31:15,858 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 10:31:15,860 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 10:31:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:16,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:31:16,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:31:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:31:16,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:31:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:31:16,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144697231] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:31:16,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:31:16,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 10:31:16,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743917681] [2023-08-26 10:31:16,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:31:16,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 10:31:16,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:16,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 10:31:16,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-08-26 10:31:16,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 528 [2023-08-26 10:31:16,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 71 transitions, 213 flow. Second operand has 13 states, 13 states have (on average 221.46153846153845) internal successors, (2879), 13 states have internal predecessors, (2879), 0 states have call successors, (0), 0 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 10:31:16,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:16,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 528 [2023-08-26 10:31:16,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:17,237 INFO L124 PetriNetUnfolderBase]: 6946/11110 cut-off events. [2023-08-26 10:31:17,238 INFO L125 PetriNetUnfolderBase]: For 6917/8023 co-relation queries the response was YES. [2023-08-26 10:31:17,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26778 conditions, 11110 events. 6946/11110 cut-off events. For 6917/8023 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 76639 event pairs, 880 based on Foata normal form. 1106/11555 useless extension candidates. Maximal degree in co-relation 26769. Up to 2976 conditions per place. [2023-08-26 10:31:17,293 INFO L140 encePairwiseOnDemand]: 518/528 looper letters, 158 selfloop transitions, 23 changer transitions 0/206 dead transitions. [2023-08-26 10:31:17,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 206 transitions, 1052 flow [2023-08-26 10:31:17,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 10:31:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 10:31:17,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2547 transitions. [2023-08-26 10:31:17,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4385330578512397 [2023-08-26 10:31:17,299 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2547 transitions. [2023-08-26 10:31:17,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2547 transitions. [2023-08-26 10:31:17,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:17,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2547 transitions. [2023-08-26 10:31:17,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 231.54545454545453) internal successors, (2547), 11 states have internal predecessors, (2547), 0 states have call successors, (0), 0 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 10:31:17,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 528.0) internal successors, (6336), 12 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 10:31:17,311 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 528.0) internal successors, (6336), 12 states have internal predecessors, (6336), 0 states have call successors, (0), 0 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 10:31:17,311 INFO L175 Difference]: Start difference. First operand has 82 places, 71 transitions, 213 flow. Second operand 11 states and 2547 transitions. [2023-08-26 10:31:17,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 206 transitions, 1052 flow [2023-08-26 10:31:17,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 206 transitions, 1027 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 10:31:17,317 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 340 flow [2023-08-26 10:31:17,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=340, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2023-08-26 10:31:17,317 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -6 predicate places. [2023-08-26 10:31:17,317 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 340 flow [2023-08-26 10:31:17,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 221.46153846153845) internal successors, (2879), 13 states have internal predecessors, (2879), 0 states have call successors, (0), 0 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 10:31:17,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:17,318 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:17,325 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 10:31:17,523 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,SelfDestructingSolverStorable15 [2023-08-26 10:31:17,524 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:17,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:17,524 INFO L85 PathProgramCache]: Analyzing trace with hash 209966525, now seen corresponding path program 2 times [2023-08-26 10:31:17,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:17,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505114726] [2023-08-26 10:31:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:17,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:17,673 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 10:31:17,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:17,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505114726] [2023-08-26 10:31:17,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505114726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:31:17,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561278365] [2023-08-26 10:31:17,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:31:17,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:31:17,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:31:17,675 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 10:31:17,698 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 10:31:17,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:31:17,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:31:17,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:31:17,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:31:17,985 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 10:31:17,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:31:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 10:31:18,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561278365] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 10:31:18,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 10:31:18,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2023-08-26 10:31:18,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853797696] [2023-08-26 10:31:18,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:31:18,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 10:31:18,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:18,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 10:31:18,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-08-26 10:31:18,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 528 [2023-08-26 10:31:18,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 221.28571428571428) internal successors, (1549), 7 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:31:18,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:18,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 528 [2023-08-26 10:31:18,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:19,130 INFO L124 PetriNetUnfolderBase]: 7990/13402 cut-off events. [2023-08-26 10:31:19,130 INFO L125 PetriNetUnfolderBase]: For 10182/11466 co-relation queries the response was YES. [2023-08-26 10:31:19,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34449 conditions, 13402 events. 7990/13402 cut-off events. For 10182/11466 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 99557 event pairs, 1423 based on Foata normal form. 1295/14569 useless extension candidates. Maximal degree in co-relation 34436. Up to 4330 conditions per place. [2023-08-26 10:31:19,201 INFO L140 encePairwiseOnDemand]: 518/528 looper letters, 154 selfloop transitions, 32 changer transitions 0/211 dead transitions. [2023-08-26 10:31:19,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 211 transitions, 1187 flow [2023-08-26 10:31:19,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 10:31:19,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 10:31:19,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2107 transitions. [2023-08-26 10:31:19,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4433922558922559 [2023-08-26 10:31:19,204 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2107 transitions. [2023-08-26 10:31:19,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2107 transitions. [2023-08-26 10:31:19,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:19,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2107 transitions. [2023-08-26 10:31:19,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 234.11111111111111) internal successors, (2107), 9 states have internal predecessors, (2107), 0 states have call successors, (0), 0 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 10:31:19,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 528.0) internal successors, (5280), 10 states have internal predecessors, (5280), 0 states have call successors, (0), 0 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 10:31:19,212 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 528.0) internal successors, (5280), 10 states have internal predecessors, (5280), 0 states have call successors, (0), 0 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 10:31:19,212 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 340 flow. Second operand 9 states and 2107 transitions. [2023-08-26 10:31:19,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 211 transitions, 1187 flow [2023-08-26 10:31:19,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 211 transitions, 1184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 10:31:19,237 INFO L231 Difference]: Finished difference. Result has 103 places, 104 transitions, 557 flow [2023-08-26 10:31:19,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=557, PETRI_PLACES=103, PETRI_TRANSITIONS=104} [2023-08-26 10:31:19,238 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 4 predicate places. [2023-08-26 10:31:19,238 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 104 transitions, 557 flow [2023-08-26 10:31:19,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 221.28571428571428) internal successors, (1549), 7 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:31:19,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:19,239 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:19,245 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 10:31:19,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:31:19,444 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:19,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:19,445 INFO L85 PathProgramCache]: Analyzing trace with hash 201014751, now seen corresponding path program 3 times [2023-08-26 10:31:19,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:19,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259814643] [2023-08-26 10:31:19,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:19,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:19,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:31:19,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:19,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259814643] [2023-08-26 10:31:19,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259814643] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:31:19,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396743021] [2023-08-26 10:31:19,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:31:19,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:31:19,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:31:19,597 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 10:31:19,622 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 10:31:19,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 10:31:19,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:31:19,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:31:19,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:31:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:31:19,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:31:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:31:19,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396743021] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 10:31:19,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 10:31:19,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-08-26 10:31:19,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450664500] [2023-08-26 10:31:19,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:31:19,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 10:31:19,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:19,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 10:31:19,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-08-26 10:31:19,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 528 [2023-08-26 10:31:19,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 104 transitions, 557 flow. Second operand has 7 states, 7 states have (on average 221.28571428571428) internal successors, (1549), 7 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:31:19,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:19,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 528 [2023-08-26 10:31:19,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:21,288 INFO L124 PetriNetUnfolderBase]: 9023/14719 cut-off events. [2023-08-26 10:31:21,289 INFO L125 PetriNetUnfolderBase]: For 23590/24995 co-relation queries the response was YES. [2023-08-26 10:31:21,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43494 conditions, 14719 events. 9023/14719 cut-off events. For 23590/24995 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 106786 event pairs, 837 based on Foata normal form. 1379/15975 useless extension candidates. Maximal degree in co-relation 43477. Up to 5348 conditions per place. [2023-08-26 10:31:21,456 INFO L140 encePairwiseOnDemand]: 518/528 looper letters, 135 selfloop transitions, 52 changer transitions 0/212 dead transitions. [2023-08-26 10:31:21,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 212 transitions, 1465 flow [2023-08-26 10:31:21,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 10:31:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 10:31:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2079 transitions. [2023-08-26 10:31:21,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2023-08-26 10:31:21,461 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2079 transitions. [2023-08-26 10:31:21,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2079 transitions. [2023-08-26 10:31:21,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:21,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2079 transitions. [2023-08-26 10:31:21,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 231.0) internal successors, (2079), 9 states have internal predecessors, (2079), 0 states have call successors, (0), 0 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 10:31:21,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 528.0) internal successors, (5280), 10 states have internal predecessors, (5280), 0 states have call successors, (0), 0 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 10:31:21,473 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 528.0) internal successors, (5280), 10 states have internal predecessors, (5280), 0 states have call successors, (0), 0 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 10:31:21,473 INFO L175 Difference]: Start difference. First operand has 103 places, 104 transitions, 557 flow. Second operand 9 states and 2079 transitions. [2023-08-26 10:31:21,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 212 transitions, 1465 flow [2023-08-26 10:31:21,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 212 transitions, 1446 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-26 10:31:21,557 INFO L231 Difference]: Finished difference. Result has 115 places, 127 transitions, 950 flow [2023-08-26 10:31:21,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=950, PETRI_PLACES=115, PETRI_TRANSITIONS=127} [2023-08-26 10:31:21,557 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 16 predicate places. [2023-08-26 10:31:21,557 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 127 transitions, 950 flow [2023-08-26 10:31:21,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 221.28571428571428) internal successors, (1549), 7 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:31:21,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:21,559 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:21,568 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 10:31:21,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 10:31:21,765 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:21,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:21,765 INFO L85 PathProgramCache]: Analyzing trace with hash -785947191, now seen corresponding path program 4 times [2023-08-26 10:31:21,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:21,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807549175] [2023-08-26 10:31:21,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:21,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:31:21,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:21,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807549175] [2023-08-26 10:31:21,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807549175] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:31:21,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534018770] [2023-08-26 10:31:21,897 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:31:21,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:31:21,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:31:21,899 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 10:31:21,902 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 10:31:22,031 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:31:22,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:31:22,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 10:31:22,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:31:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:31:22,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:31:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:31:22,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534018770] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:31:22,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:31:22,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2023-08-26 10:31:22,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746745367] [2023-08-26 10:31:22,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:31:22,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 10:31:22,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:22,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 10:31:22,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-26 10:31:22,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 528 [2023-08-26 10:31:22,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 127 transitions, 950 flow. Second operand has 13 states, 13 states have (on average 212.30769230769232) internal successors, (2760), 13 states have internal predecessors, (2760), 0 states have call successors, (0), 0 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 10:31:22,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:22,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 528 [2023-08-26 10:31:22,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:27,459 INFO L124 PetriNetUnfolderBase]: 33934/52307 cut-off events. [2023-08-26 10:31:27,459 INFO L125 PetriNetUnfolderBase]: For 139147/139312 co-relation queries the response was YES. [2023-08-26 10:31:27,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163318 conditions, 52307 events. 33934/52307 cut-off events. For 139147/139312 co-relation queries the response was YES. Maximal size of possible extension queue 1322. Compared 387439 event pairs, 2653 based on Foata normal form. 179/52436 useless extension candidates. Maximal degree in co-relation 163295. Up to 7768 conditions per place. [2023-08-26 10:31:28,108 INFO L140 encePairwiseOnDemand]: 515/528 looper letters, 403 selfloop transitions, 188 changer transitions 0/610 dead transitions. [2023-08-26 10:31:28,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 610 transitions, 4856 flow [2023-08-26 10:31:28,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 10:31:28,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 10:31:28,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5182 transitions. [2023-08-26 10:31:28,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42671277997364954 [2023-08-26 10:31:28,117 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5182 transitions. [2023-08-26 10:31:28,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5182 transitions. [2023-08-26 10:31:28,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:28,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5182 transitions. [2023-08-26 10:31:28,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 225.30434782608697) internal successors, (5182), 23 states have internal predecessors, (5182), 0 states have call successors, (0), 0 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 10:31:28,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 528.0) internal successors, (12672), 24 states have internal predecessors, (12672), 0 states have call successors, (0), 0 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 10:31:28,137 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 528.0) internal successors, (12672), 24 states have internal predecessors, (12672), 0 states have call successors, (0), 0 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 10:31:28,137 INFO L175 Difference]: Start difference. First operand has 115 places, 127 transitions, 950 flow. Second operand 23 states and 5182 transitions. [2023-08-26 10:31:28,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 610 transitions, 4856 flow [2023-08-26 10:31:30,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 610 transitions, 4729 flow, removed 62 selfloop flow, removed 2 redundant places. [2023-08-26 10:31:30,108 INFO L231 Difference]: Finished difference. Result has 145 places, 261 transitions, 2930 flow [2023-08-26 10:31:30,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2930, PETRI_PLACES=145, PETRI_TRANSITIONS=261} [2023-08-26 10:31:30,108 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 46 predicate places. [2023-08-26 10:31:30,109 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 261 transitions, 2930 flow [2023-08-26 10:31:30,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 212.30769230769232) internal successors, (2760), 13 states have internal predecessors, (2760), 0 states have call successors, (0), 0 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 10:31:30,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:30,109 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:30,118 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 10:31:30,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:31:30,314 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:30,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:30,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1415119207, now seen corresponding path program 5 times [2023-08-26 10:31:30,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:30,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030757217] [2023-08-26 10:31:30,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:30,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:31:30,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:30,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030757217] [2023-08-26 10:31:30,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030757217] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:31:30,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419899622] [2023-08-26 10:31:30,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:31:30,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:31:30,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:31:30,455 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 10:31:30,457 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 10:31:30,643 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:31:30,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:31:30,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 10:31:30,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:31:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:31:30,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:31:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:31:30,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419899622] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:31:30,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:31:30,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-08-26 10:31:30,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555491028] [2023-08-26 10:31:30,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:31:30,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 10:31:30,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:30,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 10:31:30,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-08-26 10:31:30,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 528 [2023-08-26 10:31:30,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 261 transitions, 2930 flow. Second operand has 14 states, 14 states have (on average 211.5) internal successors, (2961), 14 states have internal predecessors, (2961), 0 states have call successors, (0), 0 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 10:31:30,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:30,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 528 [2023-08-26 10:31:30,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:39,952 INFO L124 PetriNetUnfolderBase]: 51384/78145 cut-off events. [2023-08-26 10:31:39,952 INFO L125 PetriNetUnfolderBase]: For 260320/260394 co-relation queries the response was YES. [2023-08-26 10:31:40,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257313 conditions, 78145 events. 51384/78145 cut-off events. For 260320/260394 co-relation queries the response was YES. Maximal size of possible extension queue 1743. Compared 590632 event pairs, 3578 based on Foata normal form. 61/78154 useless extension candidates. Maximal degree in co-relation 257280. Up to 11138 conditions per place. [2023-08-26 10:31:40,802 INFO L140 encePairwiseOnDemand]: 516/528 looper letters, 505 selfloop transitions, 322 changer transitions 0/846 dead transitions. [2023-08-26 10:31:40,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 846 transitions, 7713 flow [2023-08-26 10:31:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-26 10:31:40,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-26 10:31:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 6966 transitions. [2023-08-26 10:31:40,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42558651026392963 [2023-08-26 10:31:40,809 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 6966 transitions. [2023-08-26 10:31:40,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 6966 transitions. [2023-08-26 10:31:40,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:40,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 6966 transitions. [2023-08-26 10:31:40,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 224.70967741935485) internal successors, (6966), 31 states have internal predecessors, (6966), 0 states have call successors, (0), 0 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 10:31:40,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 528.0) internal successors, (16896), 32 states have internal predecessors, (16896), 0 states have call successors, (0), 0 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 10:31:40,825 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 528.0) internal successors, (16896), 32 states have internal predecessors, (16896), 0 states have call successors, (0), 0 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 10:31:40,825 INFO L175 Difference]: Start difference. First operand has 145 places, 261 transitions, 2930 flow. Second operand 31 states and 6966 transitions. [2023-08-26 10:31:40,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 846 transitions, 7713 flow [2023-08-26 10:31:44,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 846 transitions, 7448 flow, removed 46 selfloop flow, removed 4 redundant places. [2023-08-26 10:31:44,020 INFO L231 Difference]: Finished difference. Result has 181 places, 415 transitions, 5401 flow [2023-08-26 10:31:44,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=5401, PETRI_PLACES=181, PETRI_TRANSITIONS=415} [2023-08-26 10:31:44,021 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 82 predicate places. [2023-08-26 10:31:44,021 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 415 transitions, 5401 flow [2023-08-26 10:31:44,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 211.5) internal successors, (2961), 14 states have internal predecessors, (2961), 0 states have call successors, (0), 0 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 10:31:44,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:44,022 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:44,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-26 10:31:44,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:31:44,227 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:44,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:44,228 INFO L85 PathProgramCache]: Analyzing trace with hash 938194115, now seen corresponding path program 6 times [2023-08-26 10:31:44,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:44,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732274962] [2023-08-26 10:31:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:44,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:44,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:31:44,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:44,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732274962] [2023-08-26 10:31:44,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732274962] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:31:44,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641421767] [2023-08-26 10:31:44,375 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:31:44,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:31:44,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:31:44,376 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 10:31:44,378 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 10:31:44,613 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-26 10:31:44,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:31:44,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:31:44,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:31:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:31:44,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:31:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:31:44,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641421767] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:31:44,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:31:44,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-26 10:31:44,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040016241] [2023-08-26 10:31:44,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:31:44,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 10:31:44,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:44,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 10:31:44,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-08-26 10:31:44,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 528 [2023-08-26 10:31:44,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 415 transitions, 5401 flow. Second operand has 14 states, 14 states have (on average 221.0) internal successors, (3094), 14 states have internal predecessors, (3094), 0 states have call successors, (0), 0 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 10:31:44,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:44,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 528 [2023-08-26 10:31:44,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:31:50,413 INFO L124 PetriNetUnfolderBase]: 26722/42349 cut-off events. [2023-08-26 10:31:50,413 INFO L125 PetriNetUnfolderBase]: For 177877/177948 co-relation queries the response was YES. [2023-08-26 10:31:50,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152351 conditions, 42349 events. 26722/42349 cut-off events. For 177877/177948 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 334365 event pairs, 3766 based on Foata normal form. 47/42175 useless extension candidates. Maximal degree in co-relation 152308. Up to 12854 conditions per place. [2023-08-26 10:31:50,915 INFO L140 encePairwiseOnDemand]: 516/528 looper letters, 344 selfloop transitions, 211 changer transitions 0/620 dead transitions. [2023-08-26 10:31:50,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 620 transitions, 7451 flow [2023-08-26 10:31:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 10:31:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 10:31:50,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3502 transitions. [2023-08-26 10:31:50,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44217171717171716 [2023-08-26 10:31:50,921 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3502 transitions. [2023-08-26 10:31:50,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3502 transitions. [2023-08-26 10:31:50,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:31:50,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3502 transitions. [2023-08-26 10:31:50,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 233.46666666666667) internal successors, (3502), 15 states have internal predecessors, (3502), 0 states have call successors, (0), 0 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 10:31:50,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 528.0) internal successors, (8448), 16 states have internal predecessors, (8448), 0 states have call successors, (0), 0 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 10:31:50,932 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 528.0) internal successors, (8448), 16 states have internal predecessors, (8448), 0 states have call successors, (0), 0 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 10:31:50,932 INFO L175 Difference]: Start difference. First operand has 181 places, 415 transitions, 5401 flow. Second operand 15 states and 3502 transitions. [2023-08-26 10:31:50,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 620 transitions, 7451 flow [2023-08-26 10:31:52,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 620 transitions, 7254 flow, removed 57 selfloop flow, removed 4 redundant places. [2023-08-26 10:31:52,818 INFO L231 Difference]: Finished difference. Result has 193 places, 427 transitions, 5880 flow [2023-08-26 10:31:52,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=5182, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5880, PETRI_PLACES=193, PETRI_TRANSITIONS=427} [2023-08-26 10:31:52,819 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 94 predicate places. [2023-08-26 10:31:52,819 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 427 transitions, 5880 flow [2023-08-26 10:31:52,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 221.0) internal successors, (3094), 14 states have internal predecessors, (3094), 0 states have call successors, (0), 0 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 10:31:52,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:31:52,820 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:31:52,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-26 10:31:53,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:31:53,026 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:31:53,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:31:53,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1639982554, now seen corresponding path program 1 times [2023-08-26 10:31:53,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:31:53,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552825205] [2023-08-26 10:31:53,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:53,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:31:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:31:54,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:31:54,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552825205] [2023-08-26 10:31:54,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552825205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:31:54,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058145085] [2023-08-26 10:31:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:31:54,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:31:54,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:31:54,073 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 10:31:54,083 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 10:31:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:31:54,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-26 10:31:54,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:31:54,716 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 10:31:54,720 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:31:54,721 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 24 treesize of output 13 [2023-08-26 10:31:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:31:54,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:31:55,193 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:31:55,193 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 28 treesize of output 21 [2023-08-26 10:31:55,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:31:55,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058145085] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:31:55,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:31:55,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2023-08-26 10:31:55,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767687629] [2023-08-26 10:31:55,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:31:55,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-26 10:31:55,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:31:55,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-26 10:31:55,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-08-26 10:31:55,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 528 [2023-08-26 10:31:55,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 427 transitions, 5880 flow. Second operand has 27 states, 27 states have (on average 193.4814814814815) internal successors, (5224), 27 states have internal predecessors, (5224), 0 states have call successors, (0), 0 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 10:31:55,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:31:55,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 528 [2023-08-26 10:31:55,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:32:21,260 INFO L124 PetriNetUnfolderBase]: 111621/169587 cut-off events. [2023-08-26 10:32:21,260 INFO L125 PetriNetUnfolderBase]: For 791642/794849 co-relation queries the response was YES. [2023-08-26 10:32:22,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598685 conditions, 169587 events. 111621/169587 cut-off events. For 791642/794849 co-relation queries the response was YES. Maximal size of possible extension queue 3439. Compared 1401862 event pairs, 20841 based on Foata normal form. 2961/172181 useless extension candidates. Maximal degree in co-relation 598642. Up to 67005 conditions per place. [2023-08-26 10:32:23,871 INFO L140 encePairwiseOnDemand]: 513/528 looper letters, 1021 selfloop transitions, 362 changer transitions 5/1417 dead transitions. [2023-08-26 10:32:23,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 1417 transitions, 20313 flow [2023-08-26 10:32:23,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 10:32:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 10:32:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3640 transitions. [2023-08-26 10:32:23,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055258467023173 [2023-08-26 10:32:23,876 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3640 transitions. [2023-08-26 10:32:23,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3640 transitions. [2023-08-26 10:32:23,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:32:23,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3640 transitions. [2023-08-26 10:32:23,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 214.11764705882354) internal successors, (3640), 17 states have internal predecessors, (3640), 0 states have call successors, (0), 0 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 10:32:23,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 528.0) internal successors, (9504), 18 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 10:32:23,889 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 528.0) internal successors, (9504), 18 states have internal predecessors, (9504), 0 states have call successors, (0), 0 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 10:32:23,889 INFO L175 Difference]: Start difference. First operand has 193 places, 427 transitions, 5880 flow. Second operand 17 states and 3640 transitions. [2023-08-26 10:32:23,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 1417 transitions, 20313 flow [2023-08-26 10:32:36,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1417 transitions, 20045 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-08-26 10:32:36,564 INFO L231 Difference]: Finished difference. Result has 216 places, 742 transitions, 12646 flow [2023-08-26 10:32:36,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=5785, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=12646, PETRI_PLACES=216, PETRI_TRANSITIONS=742} [2023-08-26 10:32:36,565 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 117 predicate places. [2023-08-26 10:32:36,565 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 742 transitions, 12646 flow [2023-08-26 10:32:36,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 193.4814814814815) internal successors, (5224), 27 states have internal predecessors, (5224), 0 states have call successors, (0), 0 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 10:32:36,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:32:36,566 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:32:36,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 10:32:36,766 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,SelfDestructingSolverStorable21 [2023-08-26 10:32:36,766 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:32:36,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:32:36,767 INFO L85 PathProgramCache]: Analyzing trace with hash 861936170, now seen corresponding path program 2 times [2023-08-26 10:32:36,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:32:36,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208328240] [2023-08-26 10:32:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:32:36,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:32:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:32:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:32:37,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:32:37,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208328240] [2023-08-26 10:32:37,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208328240] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:32:37,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184039701] [2023-08-26 10:32:37,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:32:37,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:32:37,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:32:37,563 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 10:32:37,565 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 10:32:37,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:32:37,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:32:37,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-26 10:32:37,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:32:38,246 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 10:32:38,246 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 19 treesize of output 10 [2023-08-26 10:32:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:32:38,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:32:38,528 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:32:38,529 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 28 treesize of output 21 [2023-08-26 10:32:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:32:39,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184039701] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:32:39,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:32:39,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 29 [2023-08-26 10:32:39,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084543366] [2023-08-26 10:32:39,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:32:39,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-26 10:32:39,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:32:39,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-26 10:32:39,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2023-08-26 10:32:39,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 528 [2023-08-26 10:32:39,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 742 transitions, 12646 flow. Second operand has 31 states, 31 states have (on average 189.48387096774192) internal successors, (5874), 31 states have internal predecessors, (5874), 0 states have call successors, (0), 0 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 10:32:39,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:32:39,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 528 [2023-08-26 10:32:39,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:33:37,267 INFO L124 PetriNetUnfolderBase]: 188600/287316 cut-off events. [2023-08-26 10:33:37,268 INFO L125 PetriNetUnfolderBase]: For 1485855/1486002 co-relation queries the response was YES. [2023-08-26 10:33:40,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048754 conditions, 287316 events. 188600/287316 cut-off events. For 1485855/1486002 co-relation queries the response was YES. Maximal size of possible extension queue 5823. Compared 2517686 event pairs, 30070 based on Foata normal form. 48/287334 useless extension candidates. Maximal degree in co-relation 1048701. Up to 114105 conditions per place. [2023-08-26 10:33:42,026 INFO L140 encePairwiseOnDemand]: 512/528 looper letters, 1238 selfloop transitions, 606 changer transitions 1/1864 dead transitions. [2023-08-26 10:33:42,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1864 transitions, 28602 flow [2023-08-26 10:33:42,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-26 10:33:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-26 10:33:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7329 transitions. [2023-08-26 10:33:42,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.385574494949495 [2023-08-26 10:33:42,034 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7329 transitions. [2023-08-26 10:33:42,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7329 transitions. [2023-08-26 10:33:42,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:33:42,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7329 transitions. [2023-08-26 10:33:42,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 203.58333333333334) internal successors, (7329), 36 states have internal predecessors, (7329), 0 states have call successors, (0), 0 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 10:33:42,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 528.0) internal successors, (19536), 37 states have internal predecessors, (19536), 0 states have call successors, (0), 0 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 10:33:42,056 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 528.0) internal successors, (19536), 37 states have internal predecessors, (19536), 0 states have call successors, (0), 0 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 10:33:42,056 INFO L175 Difference]: Start difference. First operand has 216 places, 742 transitions, 12646 flow. Second operand 36 states and 7329 transitions. [2023-08-26 10:33:42,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 1864 transitions, 28602 flow [2023-08-26 10:34:27,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 1864 transitions, 27883 flow, removed 256 selfloop flow, removed 2 redundant places. [2023-08-26 10:34:27,319 INFO L231 Difference]: Finished difference. Result has 274 places, 1153 transitions, 22130 flow [2023-08-26 10:34:27,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=528, PETRI_DIFFERENCE_MINUEND_FLOW=12204, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=22130, PETRI_PLACES=274, PETRI_TRANSITIONS=1153} [2023-08-26 10:34:27,320 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 175 predicate places. [2023-08-26 10:34:27,320 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 1153 transitions, 22130 flow [2023-08-26 10:34:27,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 189.48387096774192) internal successors, (5874), 31 states have internal predecessors, (5874), 0 states have call successors, (0), 0 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 10:34:27,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:34:27,321 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:34:27,326 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 10:34:27,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:34:27,522 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2023-08-26 10:34:27,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:34:27,522 INFO L85 PathProgramCache]: Analyzing trace with hash -528361030, now seen corresponding path program 3 times [2023-08-26 10:34:27,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:34:27,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013676231] [2023-08-26 10:34:27,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:34:27,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:34:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:34:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:34:28,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:34:28,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013676231] [2023-08-26 10:34:28,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013676231] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:34:28,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075137524] [2023-08-26 10:34:28,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:34:28,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:34:28,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:34:28,414 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 10:34:28,417 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 10:34:29,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 10:34:29,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:34:29,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-26 10:34:29,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:34:29,351 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 10:34:29,352 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 19 treesize of output 10 [2023-08-26 10:34:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:34:29,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:34:29,727 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:34:29,728 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 28 treesize of output 21 [2023-08-26 10:34:30,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:34:30,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075137524] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:34:30,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:34:30,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 29 [2023-08-26 10:34:30,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273915994] [2023-08-26 10:34:30,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:34:30,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-26 10:34:30,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:34:30,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-26 10:34:30,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=759, Unknown=0, NotChecked=0, Total=930 [2023-08-26 10:34:30,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 528 [2023-08-26 10:34:30,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 1153 transitions, 22130 flow. Second operand has 31 states, 31 states have (on average 189.48387096774192) internal successors, (5874), 31 states have internal predecessors, (5874), 0 states have call successors, (0), 0 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 10:34:30,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:34:30,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 528 [2023-08-26 10:34:30,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand