/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 -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-queue-add-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 06:56:06,911 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 06:56:06,948 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 06:56:06,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 06:56:06,954 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 06:56:06,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 06:56:06,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 06:56:06,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 06:56:06,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 06:56:06,977 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 06:56:06,977 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 06:56:06,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 06:56:06,978 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 06:56:06,978 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 06:56:06,978 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 06:56:06,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 06:56:06,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 06:56:06,979 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 06:56:06,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 06:56:06,979 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 06:56:06,979 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 06:56:06,980 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 06:56:06,980 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 06:56:06,980 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 06:56:06,980 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 06:56:06,981 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 06:56:06,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 06:56:06,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 06:56:06,981 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 06:56:06,981 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 06:56:06,982 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 06:56:06,982 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 06:56:06,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 06:56:06,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 06:56:06,982 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 06:56:06,982 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 06:56:07,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 06:56:07,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 06:56:07,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 06:56:07,215 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 06:56:07,215 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 06:56:07,216 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2023-08-25 06:56:08,417 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 06:56:08,659 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 06:56:08,659 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2023-08-25 06:56:08,666 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6dbbf02d/1d560ce3c7a14c0d8b34006e59c31401/FLAGc9288a82d [2023-08-25 06:56:08,677 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6dbbf02d/1d560ce3c7a14c0d8b34006e59c31401 [2023-08-25 06:56:08,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 06:56:08,680 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 06:56:08,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 06:56:08,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 06:56:08,684 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 06:56:08,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:56:08" (1/1) ... [2023-08-25 06:56:08,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da21fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:56:08, skipping insertion in model container [2023-08-25 06:56:08,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:56:08" (1/1) ... [2023-08-25 06:56:08,703 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 06:56:08,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 06:56:08,912 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 06:56:08,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 06:56:08,963 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 06:56:08,963 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 06:56:08,972 INFO L206 MainTranslator]: Completed translation [2023-08-25 06:56:08,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:56:08 WrapperNode [2023-08-25 06:56:08,974 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 06:56:08,975 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 06:56:08,975 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 06:56:08,975 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 06:56:08,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:56:08" (1/1) ... [2023-08-25 06:56:09,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:56:08" (1/1) ... [2023-08-25 06:56:09,042 INFO L138 Inliner]: procedures = 24, calls = 40, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 300 [2023-08-25 06:56:09,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 06:56:09,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 06:56:09,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 06:56:09,044 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 06:56:09,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:56:08" (1/1) ... [2023-08-25 06:56:09,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:56:08" (1/1) ... [2023-08-25 06:56:09,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:56:08" (1/1) ... [2023-08-25 06:56:09,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:56:08" (1/1) ... [2023-08-25 06:56:09,082 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:56:08" (1/1) ... [2023-08-25 06:56:09,085 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:56:08" (1/1) ... [2023-08-25 06:56:09,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:56:08" (1/1) ... [2023-08-25 06:56:09,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:56:08" (1/1) ... [2023-08-25 06:56:09,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 06:56:09,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 06:56:09,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 06:56:09,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 06:56:09,117 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:56:08" (1/1) ... [2023-08-25 06:56:09,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 06:56:09,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:56:09,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 06:56:09,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 06:56:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 06:56:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 06:56:09,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 06:56:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 06:56:09,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 06:56:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 06:56:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 06:56:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 06:56:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 06:56:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 06:56:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 06:56:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 06:56:09,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 06:56:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 06:56:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 06:56:09,198 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 06:56:09,285 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 06:56:09,287 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 06:56:09,796 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 06:56:10,110 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 06:56:10,110 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-25 06:56:10,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:56:10 BoogieIcfgContainer [2023-08-25 06:56:10,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 06:56:10,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 06:56:10,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 06:56:10,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 06:56:10,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 06:56:08" (1/3) ... [2023-08-25 06:56:10,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25bc211e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:56:10, skipping insertion in model container [2023-08-25 06:56:10,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:56:08" (2/3) ... [2023-08-25 06:56:10,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25bc211e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:56:10, skipping insertion in model container [2023-08-25 06:56:10,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:56:10" (3/3) ... [2023-08-25 06:56:10,120 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2023-08-25 06:56:10,134 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 06:56:10,134 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2023-08-25 06:56:10,135 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 06:56:10,225 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 06:56:10,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 228 transitions, 472 flow [2023-08-25 06:56:10,371 INFO L124 PetriNetUnfolderBase]: 11/226 cut-off events. [2023-08-25 06:56:10,372 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 06:56:10,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 226 events. 11/226 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 308 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 156. Up to 3 conditions per place. [2023-08-25 06:56:10,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 228 transitions, 472 flow [2023-08-25 06:56:10,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 217 transitions, 446 flow [2023-08-25 06:56:10,390 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 06:56:10,400 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 217 transitions, 446 flow [2023-08-25 06:56:10,403 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 217 transitions, 446 flow [2023-08-25 06:56:10,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 217 transitions, 446 flow [2023-08-25 06:56:10,456 INFO L124 PetriNetUnfolderBase]: 11/217 cut-off events. [2023-08-25 06:56:10,457 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 06:56:10,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 217 events. 11/217 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 299 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 156. Up to 3 conditions per place. [2023-08-25 06:56:10,461 INFO L119 LiptonReduction]: Number of co-enabled transitions 3674 [2023-08-25 06:56:17,483 INFO L134 LiptonReduction]: Checked pairs total: 10230 [2023-08-25 06:56:17,483 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-08-25 06:56:17,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 06:56:17,504 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;@64258f4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 06:56:17,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 74 error locations. [2023-08-25 06:56:17,505 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 06:56:17,505 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 06:56:17,505 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 06:56:17,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:17,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 06:56:17,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:56:17,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:17,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1190, now seen corresponding path program 1 times [2023-08-25 06:56:17,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:17,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300118733] [2023-08-25 06:56:17,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:17,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:17,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:17,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300118733] [2023-08-25 06:56:17,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300118733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:56:17,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:56:17,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 06:56:17,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653259954] [2023-08-25 06:56:17,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:56:17,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 06:56:17,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:56:17,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 06:56:17,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 06:56:17,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 478 [2023-08-25 06:56:17,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 186.5) internal successors, (373), 2 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:17,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:56:17,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 478 [2023-08-25 06:56:17,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:56:17,667 INFO L124 PetriNetUnfolderBase]: 45/124 cut-off events. [2023-08-25 06:56:17,667 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-25 06:56:17,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 124 events. 45/124 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 356 event pairs, 18 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 150. Up to 76 conditions per place. [2023-08-25 06:56:17,670 INFO L140 encePairwiseOnDemand]: 438/478 looper letters, 15 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2023-08-25 06:56:17,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 27 transitions, 96 flow [2023-08-25 06:56:17,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 06:56:17,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 06:56:17,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 427 transitions. [2023-08-25 06:56:17,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446652719665272 [2023-08-25 06:56:17,684 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 427 transitions. [2023-08-25 06:56:17,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 427 transitions. [2023-08-25 06:56:17,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:56:17,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 427 transitions. [2023-08-25 06:56:17,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 213.5) internal successors, (427), 2 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:17,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 478.0) internal successors, (1434), 3 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:17,694 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 478.0) internal successors, (1434), 3 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:17,696 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 146 flow. Second operand 2 states and 427 transitions. [2023-08-25 06:56:17,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 27 transitions, 96 flow [2023-08-25 06:56:17,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 06:56:17,699 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 58 flow [2023-08-25 06:56:17,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2023-08-25 06:56:17,703 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -43 predicate places. [2023-08-25 06:56:17,704 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 58 flow [2023-08-25 06:56:17,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 186.5) internal successors, (373), 2 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:17,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:17,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:56:17,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 06:56:17,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:56:17,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:17,710 INFO L85 PathProgramCache]: Analyzing trace with hash -103323018, now seen corresponding path program 1 times [2023-08-25 06:56:17,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:17,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429811880] [2023-08-25 06:56:17,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:17,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:18,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:18,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429811880] [2023-08-25 06:56:18,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429811880] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:56:18,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:56:18,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 06:56:18,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928145081] [2023-08-25 06:56:18,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:56:18,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 06:56:18,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:56:18,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 06:56:18,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 06:56:18,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 478 [2023-08-25 06:56:18,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 58 flow. Second operand has 6 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:18,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:56:18,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 478 [2023-08-25 06:56:18,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:56:18,386 INFO L124 PetriNetUnfolderBase]: 161/246 cut-off events. [2023-08-25 06:56:18,386 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 06:56:18,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 246 events. 161/246 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 670 event pairs, 5 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 492. Up to 117 conditions per place. [2023-08-25 06:56:18,390 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 36 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2023-08-25 06:56:18,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 42 transitions, 168 flow [2023-08-25 06:56:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 06:56:18,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 06:56:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1013 transitions. [2023-08-25 06:56:18,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353207810320781 [2023-08-25 06:56:18,396 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1013 transitions. [2023-08-25 06:56:18,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1013 transitions. [2023-08-25 06:56:18,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:56:18,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1013 transitions. [2023-08-25 06:56:18,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.83333333333334) internal successors, (1013), 6 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:18,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:18,409 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:18,410 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 58 flow. Second operand 6 states and 1013 transitions. [2023-08-25 06:56:18,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 42 transitions, 168 flow [2023-08-25 06:56:18,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 06:56:18,412 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 64 flow [2023-08-25 06:56:18,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=64, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-25 06:56:18,413 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -39 predicate places. [2023-08-25 06:56:18,414 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 64 flow [2023-08-25 06:56:18,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:18,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:18,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:56:18,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 06:56:18,418 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:56:18,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:18,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2122879380, now seen corresponding path program 1 times [2023-08-25 06:56:18,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:18,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906425488] [2023-08-25 06:56:18,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:18,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:18,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:18,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906425488] [2023-08-25 06:56:18,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906425488] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:56:18,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:56:18,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 06:56:18,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790763616] [2023-08-25 06:56:18,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:56:18,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 06:56:18,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:56:18,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 06:56:18,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 06:56:18,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 478 [2023-08-25 06:56:18,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 167.25) internal successors, (669), 4 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:18,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:56:18,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 478 [2023-08-25 06:56:18,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:56:18,568 INFO L124 PetriNetUnfolderBase]: 45/130 cut-off events. [2023-08-25 06:56:18,568 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-25 06:56:18,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 130 events. 45/130 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 376 event pairs, 18 based on Foata normal form. 6/104 useless extension candidates. Maximal degree in co-relation 245. Up to 76 conditions per place. [2023-08-25 06:56:18,569 INFO L140 encePairwiseOnDemand]: 471/478 looper letters, 14 selfloop transitions, 2 changer transitions 5/32 dead transitions. [2023-08-25 06:56:18,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 122 flow [2023-08-25 06:56:18,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:56:18,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:56:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 685 transitions. [2023-08-25 06:56:18,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35826359832635984 [2023-08-25 06:56:18,571 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 685 transitions. [2023-08-25 06:56:18,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 685 transitions. [2023-08-25 06:56:18,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:56:18,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 685 transitions. [2023-08-25 06:56:18,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:18,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:18,577 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:18,577 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 64 flow. Second operand 4 states and 685 transitions. [2023-08-25 06:56:18,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 122 flow [2023-08-25 06:56:18,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 06:56:18,578 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 77 flow [2023-08-25 06:56:18,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-08-25 06:56:18,579 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -38 predicate places. [2023-08-25 06:56:18,579 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 77 flow [2023-08-25 06:56:18,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.25) internal successors, (669), 4 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:18,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:18,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:56:18,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 06:56:18,584 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:56:18,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:18,585 INFO L85 PathProgramCache]: Analyzing trace with hash -619347183, now seen corresponding path program 1 times [2023-08-25 06:56:18,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:18,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639114450] [2023-08-25 06:56:18,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:18,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:56:18,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:18,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639114450] [2023-08-25 06:56:18,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639114450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:56:18,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:56:18,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 06:56:18,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102702994] [2023-08-25 06:56:18,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:56:18,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 06:56:18,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:56:18,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 06:56:18,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 06:56:18,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 478 [2023-08-25 06:56:18,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 77 flow. Second operand has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:18,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:56:18,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 478 [2023-08-25 06:56:18,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:56:19,040 INFO L124 PetriNetUnfolderBase]: 157/240 cut-off events. [2023-08-25 06:56:19,040 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-08-25 06:56:19,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 240 events. 157/240 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 666 event pairs, 64 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 658. Up to 200 conditions per place. [2023-08-25 06:56:19,041 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 28 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2023-08-25 06:56:19,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 171 flow [2023-08-25 06:56:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 06:56:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 06:56:19,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1004 transitions. [2023-08-25 06:56:19,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3500697350069735 [2023-08-25 06:56:19,055 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1004 transitions. [2023-08-25 06:56:19,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1004 transitions. [2023-08-25 06:56:19,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:56:19,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1004 transitions. [2023-08-25 06:56:19,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.33333333333334) internal successors, (1004), 6 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:19,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:19,061 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:19,061 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 77 flow. Second operand 6 states and 1004 transitions. [2023-08-25 06:56:19,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 171 flow [2023-08-25 06:56:19,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 167 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 06:56:19,063 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 79 flow [2023-08-25 06:56:19,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-08-25 06:56:19,065 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -36 predicate places. [2023-08-25 06:56:19,065 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 79 flow [2023-08-25 06:56:19,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:19,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:19,066 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] [2023-08-25 06:56:19,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 06:56:19,066 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:56:19,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:19,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2041682223, now seen corresponding path program 1 times [2023-08-25 06:56:19,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:19,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790079050] [2023-08-25 06:56:19,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:19,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:19,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:56:19,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:19,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790079050] [2023-08-25 06:56:19,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790079050] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:56:19,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:56:19,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 06:56:19,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105848479] [2023-08-25 06:56:19,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:56:19,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 06:56:19,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:56:19,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 06:56:19,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-25 06:56:19,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 478 [2023-08-25 06:56:19,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 79 flow. Second operand has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 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) [2023-08-25 06:56:19,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:56:19,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 478 [2023-08-25 06:56:19,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:56:19,483 INFO L124 PetriNetUnfolderBase]: 72/184 cut-off events. [2023-08-25 06:56:19,483 INFO L125 PetriNetUnfolderBase]: For 28/47 co-relation queries the response was YES. [2023-08-25 06:56:19,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 184 events. 72/184 cut-off events. For 28/47 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 645 event pairs, 11 based on Foata normal form. 3/146 useless extension candidates. Maximal degree in co-relation 433. Up to 77 conditions per place. [2023-08-25 06:56:19,484 INFO L140 encePairwiseOnDemand]: 471/478 looper letters, 32 selfloop transitions, 8 changer transitions 2/51 dead transitions. [2023-08-25 06:56:19,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 51 transitions, 243 flow [2023-08-25 06:56:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 06:56:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 06:56:19,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1086 transitions. [2023-08-25 06:56:19,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3786610878661088 [2023-08-25 06:56:19,487 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1086 transitions. [2023-08-25 06:56:19,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1086 transitions. [2023-08-25 06:56:19,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:56:19,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1086 transitions. [2023-08-25 06:56:19,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:19,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:19,492 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:19,492 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 79 flow. Second operand 6 states and 1086 transitions. [2023-08-25 06:56:19,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 51 transitions, 243 flow [2023-08-25 06:56:19,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 51 transitions, 232 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 06:56:19,494 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 130 flow [2023-08-25 06:56:19,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-08-25 06:56:19,494 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -32 predicate places. [2023-08-25 06:56:19,494 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 130 flow [2023-08-25 06:56:19,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 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) [2023-08-25 06:56:19,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:19,495 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] [2023-08-25 06:56:19,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 06:56:19,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:56:19,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:19,495 INFO L85 PathProgramCache]: Analyzing trace with hash 726030150, now seen corresponding path program 1 times [2023-08-25 06:56:19,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:19,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176792995] [2023-08-25 06:56:19,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:19,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:19,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:19,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176792995] [2023-08-25 06:56:19,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176792995] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:56:19,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421167020] [2023-08-25 06:56:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:19,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:19,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:56:19,617 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) [2023-08-25 06:56:19,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 06:56:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:19,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-25 06:56:19,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:56:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 06:56:19,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 06:56:19,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421167020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:56:19,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 06:56:19,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-08-25 06:56:19,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133258036] [2023-08-25 06:56:19,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:56:19,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 06:56:19,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:56:19,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 06:56:19,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-25 06:56:19,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 478 [2023-08-25 06:56:19,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 185.5) internal successors, (742), 4 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:19,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:56:19,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 478 [2023-08-25 06:56:19,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:56:19,892 INFO L124 PetriNetUnfolderBase]: 87/233 cut-off events. [2023-08-25 06:56:19,892 INFO L125 PetriNetUnfolderBase]: For 138/165 co-relation queries the response was YES. [2023-08-25 06:56:19,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 233 events. 87/233 cut-off events. For 138/165 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 912 event pairs, 12 based on Foata normal form. 25/231 useless extension candidates. Maximal degree in co-relation 655. Up to 109 conditions per place. [2023-08-25 06:56:19,894 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 30 selfloop transitions, 9 changer transitions 2/51 dead transitions. [2023-08-25 06:56:19,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 280 flow [2023-08-25 06:56:19,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:56:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:56:19,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 765 transitions. [2023-08-25 06:56:19,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40010460251046026 [2023-08-25 06:56:19,896 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 765 transitions. [2023-08-25 06:56:19,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 765 transitions. [2023-08-25 06:56:19,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:56:19,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 765 transitions. [2023-08-25 06:56:19,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:19,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:19,900 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:19,900 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 130 flow. Second operand 4 states and 765 transitions. [2023-08-25 06:56:19,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 280 flow [2023-08-25 06:56:19,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 267 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-25 06:56:19,901 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 183 flow [2023-08-25 06:56:19,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-25 06:56:19,902 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -29 predicate places. [2023-08-25 06:56:19,902 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 183 flow [2023-08-25 06:56:19,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.5) internal successors, (742), 4 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:19,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:19,903 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] [2023-08-25 06:56:19,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 06:56:20,108 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,SelfDestructingSolverStorable5 [2023-08-25 06:56:20,109 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:56:20,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:20,109 INFO L85 PathProgramCache]: Analyzing trace with hash -693880220, now seen corresponding path program 1 times [2023-08-25 06:56:20,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:20,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327180486] [2023-08-25 06:56:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:20,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:20,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:20,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:20,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327180486] [2023-08-25 06:56:20,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327180486] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:56:20,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497573942] [2023-08-25 06:56:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:20,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:20,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:56:20,201 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) [2023-08-25 06:56:20,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 06:56:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:20,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 06:56:20,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:56:20,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:20,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:56:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:20,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497573942] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:56:20,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:56:20,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-25 06:56:20,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817944133] [2023-08-25 06:56:20,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:56:20,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 06:56:20,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:56:20,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 06:56:20,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-08-25 06:56:20,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 478 [2023-08-25 06:56:20,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 183 flow. Second operand has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:20,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:56:20,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 478 [2023-08-25 06:56:20,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:56:20,486 INFO L124 PetriNetUnfolderBase]: 82/246 cut-off events. [2023-08-25 06:56:20,486 INFO L125 PetriNetUnfolderBase]: For 317/337 co-relation queries the response was YES. [2023-08-25 06:56:20,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 246 events. 82/246 cut-off events. For 317/337 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 990 event pairs, 36 based on Foata normal form. 14/226 useless extension candidates. Maximal degree in co-relation 828. Up to 158 conditions per place. [2023-08-25 06:56:20,488 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 23 selfloop transitions, 3 changer transitions 11/47 dead transitions. [2023-08-25 06:56:20,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 308 flow [2023-08-25 06:56:20,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 06:56:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 06:56:20,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1008 transitions. [2023-08-25 06:56:20,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3514644351464435 [2023-08-25 06:56:20,490 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1008 transitions. [2023-08-25 06:56:20,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1008 transitions. [2023-08-25 06:56:20,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:56:20,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1008 transitions. [2023-08-25 06:56:20,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:20,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:20,496 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:20,496 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 183 flow. Second operand 6 states and 1008 transitions. [2023-08-25 06:56:20,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 308 flow [2023-08-25 06:56:20,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 280 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-08-25 06:56:20,498 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 185 flow [2023-08-25 06:56:20,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-08-25 06:56:20,499 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -23 predicate places. [2023-08-25 06:56:20,499 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 185 flow [2023-08-25 06:56:20,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:20,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:20,500 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] [2023-08-25 06:56:20,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 06:56:20,705 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,SelfDestructingSolverStorable6 [2023-08-25 06:56:20,706 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:56:20,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:20,706 INFO L85 PathProgramCache]: Analyzing trace with hash 595697297, now seen corresponding path program 2 times [2023-08-25 06:56:20,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:20,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105850124] [2023-08-25 06:56:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:20,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:21,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:21,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105850124] [2023-08-25 06:56:21,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105850124] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:56:21,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114873551] [2023-08-25 06:56:21,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:56:21,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:21,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:56:21,598 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) [2023-08-25 06:56:21,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 06:56:21,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:56:21,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:56:21,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 06:56:21,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:56:21,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 06:56:21,984 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 06:56:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:22,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:56:22,204 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:56:22,205 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 45 treesize of output 37 [2023-08-25 06:56:22,208 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-25 06:56:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:22,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114873551] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:56:22,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:56:22,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2023-08-25 06:56:22,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568104332] [2023-08-25 06:56:22,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:56:22,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 06:56:22,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:56:22,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 06:56:22,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2023-08-25 06:56:22,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 478 [2023-08-25 06:56:22,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 185 flow. Second operand has 24 states, 24 states have (on average 122.41666666666667) internal successors, (2938), 24 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:22,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:56:22,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 478 [2023-08-25 06:56:22,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:56:23,792 INFO L124 PetriNetUnfolderBase]: 729/1355 cut-off events. [2023-08-25 06:56:23,793 INFO L125 PetriNetUnfolderBase]: For 1896/1902 co-relation queries the response was YES. [2023-08-25 06:56:23,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5155 conditions, 1355 events. 729/1355 cut-off events. For 1896/1902 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6829 event pairs, 90 based on Foata normal form. 60/1199 useless extension candidates. Maximal degree in co-relation 5141. Up to 505 conditions per place. [2023-08-25 06:56:23,799 INFO L140 encePairwiseOnDemand]: 469/478 looper letters, 154 selfloop transitions, 41 changer transitions 1/197 dead transitions. [2023-08-25 06:56:23,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 197 transitions, 1228 flow [2023-08-25 06:56:23,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 06:56:23,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 06:56:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2206 transitions. [2023-08-25 06:56:23,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27147428008860447 [2023-08-25 06:56:23,806 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2206 transitions. [2023-08-25 06:56:23,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2206 transitions. [2023-08-25 06:56:23,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:56:23,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2206 transitions. [2023-08-25 06:56:23,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 129.76470588235293) internal successors, (2206), 17 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:23,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:23,822 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:23,822 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 185 flow. Second operand 17 states and 2206 transitions. [2023-08-25 06:56:23,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 197 transitions, 1228 flow [2023-08-25 06:56:23,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 197 transitions, 1178 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-08-25 06:56:23,830 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 624 flow [2023-08-25 06:56:23,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=624, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2023-08-25 06:56:23,832 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2023-08-25 06:56:23,832 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 624 flow [2023-08-25 06:56:23,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 122.41666666666667) internal successors, (2938), 24 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:23,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:23,834 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] [2023-08-25 06:56:23,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 06:56:24,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:24,041 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:56:24,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2072052575, now seen corresponding path program 3 times [2023-08-25 06:56:24,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:24,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67354877] [2023-08-25 06:56:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:24,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:24,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:24,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:24,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67354877] [2023-08-25 06:56:24,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67354877] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:56:24,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691481140] [2023-08-25 06:56:24,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:56:24,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:24,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:56:24,477 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) [2023-08-25 06:56:24,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 06:56:24,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 06:56:24,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:56:24,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-25 06:56:24,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:56:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:24,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:56:24,949 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 06:56:24,950 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-08-25 06:56:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:25,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691481140] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:56:25,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:56:25,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 19 [2023-08-25 06:56:25,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442030071] [2023-08-25 06:56:25,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:56:25,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:56:25,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:56:25,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:56:25,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:56:25,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 478 [2023-08-25 06:56:25,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 624 flow. Second operand has 20 states, 20 states have (on average 152.85) internal successors, (3057), 20 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:25,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:56:25,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 478 [2023-08-25 06:56:25,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:56:25,544 INFO L124 PetriNetUnfolderBase]: 324/911 cut-off events. [2023-08-25 06:56:25,544 INFO L125 PetriNetUnfolderBase]: For 2418/2503 co-relation queries the response was YES. [2023-08-25 06:56:25,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3658 conditions, 911 events. 324/911 cut-off events. For 2418/2503 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5856 event pairs, 37 based on Foata normal form. 68/916 useless extension candidates. Maximal degree in co-relation 3640. Up to 406 conditions per place. [2023-08-25 06:56:25,549 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 113 selfloop transitions, 36 changer transitions 4/164 dead transitions. [2023-08-25 06:56:25,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 164 transitions, 1503 flow [2023-08-25 06:56:25,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 06:56:25,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 06:56:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2362 transitions. [2023-08-25 06:56:25,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3294281729428173 [2023-08-25 06:56:25,555 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2362 transitions. [2023-08-25 06:56:25,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2362 transitions. [2023-08-25 06:56:25,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:56:25,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2362 transitions. [2023-08-25 06:56:25,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 157.46666666666667) internal successors, (2362), 15 states have internal predecessors, (2362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:25,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 478.0) internal successors, (7648), 16 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:25,567 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 478.0) internal successors, (7648), 16 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:25,567 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 624 flow. Second operand 15 states and 2362 transitions. [2023-08-25 06:56:25,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 164 transitions, 1503 flow [2023-08-25 06:56:25,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 164 transitions, 1389 flow, removed 53 selfloop flow, removed 4 redundant places. [2023-08-25 06:56:25,575 INFO L231 Difference]: Finished difference. Result has 82 places, 102 transitions, 992 flow [2023-08-25 06:56:25,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=992, PETRI_PLACES=82, PETRI_TRANSITIONS=102} [2023-08-25 06:56:25,575 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 11 predicate places. [2023-08-25 06:56:25,575 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 102 transitions, 992 flow [2023-08-25 06:56:25,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 152.85) internal successors, (3057), 20 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:25,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:25,577 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] [2023-08-25 06:56:25,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 06:56:25,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:25,782 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:56:25,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:25,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1599878107, now seen corresponding path program 4 times [2023-08-25 06:56:25,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:25,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426740020] [2023-08-25 06:56:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:25,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:26,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:26,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:26,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426740020] [2023-08-25 06:56:26,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426740020] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:56:26,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851132271] [2023-08-25 06:56:26,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:56:26,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:26,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:56:26,133 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) [2023-08-25 06:56:26,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 06:56:26,471 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:56:26,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:56:26,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-25 06:56:26,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:56:26,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 06:56:26,642 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 06:56:26,689 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 06:56:26,692 INFO L322 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2023-08-25 06:56:26,692 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 21 treesize of output 1 [2023-08-25 06:56:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:26,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:56:26,788 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:56:26,788 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 45 treesize of output 37 [2023-08-25 06:56:26,792 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-25 06:56:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:26,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851132271] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:56:26,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:56:26,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 20 [2023-08-25 06:56:26,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701892427] [2023-08-25 06:56:26,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:56:26,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 06:56:26,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:56:26,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 06:56:26,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2023-08-25 06:56:26,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 478 [2023-08-25 06:56:26,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 102 transitions, 992 flow. Second operand has 21 states, 21 states have (on average 142.95238095238096) internal successors, (3002), 21 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:26,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:56:26,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 478 [2023-08-25 06:56:26,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:56:28,165 INFO L124 PetriNetUnfolderBase]: 336/817 cut-off events. [2023-08-25 06:56:28,166 INFO L125 PetriNetUnfolderBase]: For 5158/5213 co-relation queries the response was YES. [2023-08-25 06:56:28,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4122 conditions, 817 events. 336/817 cut-off events. For 5158/5213 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4742 event pairs, 70 based on Foata normal form. 63/849 useless extension candidates. Maximal degree in co-relation 4097. Up to 411 conditions per place. [2023-08-25 06:56:28,171 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 87 selfloop transitions, 38 changer transitions 11/143 dead transitions. [2023-08-25 06:56:28,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 143 transitions, 1351 flow [2023-08-25 06:56:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 06:56:28,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 06:56:28,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3072 transitions. [2023-08-25 06:56:28,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30603705917513446 [2023-08-25 06:56:28,177 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3072 transitions. [2023-08-25 06:56:28,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3072 transitions. [2023-08-25 06:56:28,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:56:28,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3072 transitions. [2023-08-25 06:56:28,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 146.28571428571428) internal successors, (3072), 21 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:28,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 478.0) internal successors, (10516), 22 states have internal predecessors, (10516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:28,190 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 478.0) internal successors, (10516), 22 states have internal predecessors, (10516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:28,190 INFO L175 Difference]: Start difference. First operand has 82 places, 102 transitions, 992 flow. Second operand 21 states and 3072 transitions. [2023-08-25 06:56:28,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 143 transitions, 1351 flow [2023-08-25 06:56:28,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 143 transitions, 1257 flow, removed 38 selfloop flow, removed 6 redundant places. [2023-08-25 06:56:28,205 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 857 flow [2023-08-25 06:56:28,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=857, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2023-08-25 06:56:28,206 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 31 predicate places. [2023-08-25 06:56:28,206 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 857 flow [2023-08-25 06:56:28,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 142.95238095238096) internal successors, (3002), 21 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:28,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:28,207 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:56:28,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 06:56:28,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-25 06:56:28,413 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:56:28,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:28,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1562637728, now seen corresponding path program 5 times [2023-08-25 06:56:28,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:28,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519980791] [2023-08-25 06:56:28,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:28,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:29,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:29,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:29,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519980791] [2023-08-25 06:56:29,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519980791] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:56:29,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184602778] [2023-08-25 06:56:29,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:56:29,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:29,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:56:29,034 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) [2023-08-25 06:56:29,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 06:56:29,286 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 06:56:29,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:56:29,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 06:56:29,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:56:29,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 06:56:29,382 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 06:56:29,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 06:56:29,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:56:29,500 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:56:29,501 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 45 treesize of output 37 [2023-08-25 06:56:29,505 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-25 06:56:29,553 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 06:56:29,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184602778] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:56:29,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:56:29,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 17 [2023-08-25 06:56:29,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376860138] [2023-08-25 06:56:29,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:56:29,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 06:56:29,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:56:29,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 06:56:29,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=258, Unknown=1, NotChecked=0, Total=306 [2023-08-25 06:56:29,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 478 [2023-08-25 06:56:29,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 857 flow. Second operand has 18 states, 18 states have (on average 143.11111111111111) internal successors, (2576), 18 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:29,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:56:29,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 478 [2023-08-25 06:56:29,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:56:30,237 INFO L124 PetriNetUnfolderBase]: 345/769 cut-off events. [2023-08-25 06:56:30,237 INFO L125 PetriNetUnfolderBase]: For 5580/5604 co-relation queries the response was YES. [2023-08-25 06:56:30,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4165 conditions, 769 events. 345/769 cut-off events. For 5580/5604 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4004 event pairs, 44 based on Foata normal form. 52/798 useless extension candidates. Maximal degree in co-relation 4136. Up to 399 conditions per place. [2023-08-25 06:56:30,246 INFO L140 encePairwiseOnDemand]: 472/478 looper letters, 86 selfloop transitions, 36 changer transitions 0/129 dead transitions. [2023-08-25 06:56:30,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 129 transitions, 1443 flow [2023-08-25 06:56:30,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 06:56:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 06:56:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1468 transitions. [2023-08-25 06:56:30,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30711297071129706 [2023-08-25 06:56:30,250 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1468 transitions. [2023-08-25 06:56:30,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1468 transitions. [2023-08-25 06:56:30,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:56:30,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1468 transitions. [2023-08-25 06:56:30,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 146.8) internal successors, (1468), 10 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:30,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:30,260 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:30,260 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 857 flow. Second operand 10 states and 1468 transitions. [2023-08-25 06:56:30,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 129 transitions, 1443 flow [2023-08-25 06:56:30,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 129 transitions, 1307 flow, removed 41 selfloop flow, removed 14 redundant places. [2023-08-25 06:56:30,279 INFO L231 Difference]: Finished difference. Result has 91 places, 91 transitions, 917 flow [2023-08-25 06:56:30,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=917, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2023-08-25 06:56:30,279 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 20 predicate places. [2023-08-25 06:56:30,279 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 917 flow [2023-08-25 06:56:30,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 143.11111111111111) internal successors, (2576), 18 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:30,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:30,280 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] [2023-08-25 06:56:30,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 06:56:30,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:30,499 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:56:30,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:30,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1938593160, now seen corresponding path program 1 times [2023-08-25 06:56:30,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:30,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109844186] [2023-08-25 06:56:30,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:30,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:31,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:31,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109844186] [2023-08-25 06:56:31,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109844186] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:56:31,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001100963] [2023-08-25 06:56:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:31,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:31,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:56:31,064 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) [2023-08-25 06:56:31,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 06:56:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:31,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-25 06:56:31,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:56:31,271 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-25 06:56:31,301 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 06:56:31,337 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 06:56:31,387 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 06:56:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:31,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:56:32,112 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:56:32,113 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 63 [2023-08-25 06:56:32,121 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:56:32,121 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 148 treesize of output 140 [2023-08-25 06:56:32,129 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:56:32,130 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 116 [2023-08-25 06:56:32,141 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:56:32,141 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 79 [2023-08-25 06:56:32,336 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:56:32,337 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 63 [2023-08-25 06:56:32,346 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 06:56:32,346 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 148 treesize of output 136 [2023-08-25 06:56:32,356 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 06:56:32,357 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 112 [2023-08-25 06:56:32,368 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 06:56:32,368 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 75 [2023-08-25 06:56:32,403 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-25 06:56:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:32,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001100963] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:56:32,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:56:32,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2023-08-25 06:56:32,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989249128] [2023-08-25 06:56:32,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:56:32,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-25 06:56:32,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:56:32,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-25 06:56:32,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=639, Unknown=7, NotChecked=0, Total=756 [2023-08-25 06:56:32,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 478 [2023-08-25 06:56:32,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 917 flow. Second operand has 28 states, 28 states have (on average 122.60714285714286) internal successors, (3433), 28 states have internal predecessors, (3433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:32,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:56:32,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 478 [2023-08-25 06:56:32,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:56:43,992 WARN L234 SmtUtils]: Spent 10.52s on a formula simplification. DAG size of input: 87 DAG size of output: 72 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 06:56:50,096 INFO L124 PetriNetUnfolderBase]: 894/1631 cut-off events. [2023-08-25 06:56:50,097 INFO L125 PetriNetUnfolderBase]: For 13441/13441 co-relation queries the response was YES. [2023-08-25 06:56:50,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9335 conditions, 1631 events. 894/1631 cut-off events. For 13441/13441 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 8416 event pairs, 228 based on Foata normal form. 2/1579 useless extension candidates. Maximal degree in co-relation 9309. Up to 1184 conditions per place. [2023-08-25 06:56:50,110 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 201 selfloop transitions, 47 changer transitions 15/264 dead transitions. [2023-08-25 06:56:50,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 264 transitions, 2166 flow [2023-08-25 06:56:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-25 06:56:50,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-25 06:56:50,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3579 transitions. [2023-08-25 06:56:50,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2674088463837418 [2023-08-25 06:56:50,119 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3579 transitions. [2023-08-25 06:56:50,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3579 transitions. [2023-08-25 06:56:50,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:56:50,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3579 transitions. [2023-08-25 06:56:50,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 127.82142857142857) internal successors, (3579), 28 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:50,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 478.0) internal successors, (13862), 29 states have internal predecessors, (13862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:50,136 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 478.0) internal successors, (13862), 29 states have internal predecessors, (13862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:50,137 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 917 flow. Second operand 28 states and 3579 transitions. [2023-08-25 06:56:50,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 264 transitions, 2166 flow [2023-08-25 06:56:50,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 264 transitions, 2065 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-25 06:56:50,153 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 1278 flow [2023-08-25 06:56:50,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1278, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2023-08-25 06:56:50,154 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 45 predicate places. [2023-08-25 06:56:50,154 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 1278 flow [2023-08-25 06:56:50,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 122.60714285714286) internal successors, (3433), 28 states have internal predecessors, (3433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:50,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:50,155 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] [2023-08-25 06:56:50,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 06:56:50,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:50,363 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:56:50,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:50,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1621675982, now seen corresponding path program 2 times [2023-08-25 06:56:50,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:50,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380925549] [2023-08-25 06:56:50,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:50,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:50,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:50,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380925549] [2023-08-25 06:56:50,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380925549] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:56:50,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365540563] [2023-08-25 06:56:50,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:56:50,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:50,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:56:50,821 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) [2023-08-25 06:56:50,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 06:56:51,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:56:51,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:56:51,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-25 06:56:51,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:56:51,408 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-08-25 06:56:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:51,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:56:51,639 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:56:51,639 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 42 treesize of output 26 [2023-08-25 06:56:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:51,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365540563] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:56:51,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:56:51,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2023-08-25 06:56:51,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28465489] [2023-08-25 06:56:51,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:56:51,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-25 06:56:51,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:56:51,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-25 06:56:51,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2023-08-25 06:56:51,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 478 [2023-08-25 06:56:51,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 118 transitions, 1278 flow. Second operand has 28 states, 28 states have (on average 140.67857142857142) internal successors, (3939), 28 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:51,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:56:51,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 478 [2023-08-25 06:56:51,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:56:53,251 INFO L124 PetriNetUnfolderBase]: 323/888 cut-off events. [2023-08-25 06:56:53,251 INFO L125 PetriNetUnfolderBase]: For 4491/4563 co-relation queries the response was YES. [2023-08-25 06:56:53,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4190 conditions, 888 events. 323/888 cut-off events. For 4491/4563 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5673 event pairs, 35 based on Foata normal form. 19/878 useless extension candidates. Maximal degree in co-relation 4160. Up to 413 conditions per place. [2023-08-25 06:56:53,257 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 100 selfloop transitions, 48 changer transitions 21/178 dead transitions. [2023-08-25 06:56:53,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 178 transitions, 1918 flow [2023-08-25 06:56:53,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 06:56:53,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 06:56:53,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3014 transitions. [2023-08-25 06:56:53,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30025901574018726 [2023-08-25 06:56:53,261 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3014 transitions. [2023-08-25 06:56:53,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3014 transitions. [2023-08-25 06:56:53,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:56:53,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3014 transitions. [2023-08-25 06:56:53,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 143.52380952380952) internal successors, (3014), 21 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:53,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 478.0) internal successors, (10516), 22 states have internal predecessors, (10516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:53,271 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 478.0) internal successors, (10516), 22 states have internal predecessors, (10516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:53,271 INFO L175 Difference]: Start difference. First operand has 116 places, 118 transitions, 1278 flow. Second operand 21 states and 3014 transitions. [2023-08-25 06:56:53,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 178 transitions, 1918 flow [2023-08-25 06:56:53,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 178 transitions, 1800 flow, removed 40 selfloop flow, removed 13 redundant places. [2023-08-25 06:56:53,289 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 1391 flow [2023-08-25 06:56:53,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1391, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2023-08-25 06:56:53,290 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 56 predicate places. [2023-08-25 06:56:53,290 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 1391 flow [2023-08-25 06:56:53,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 140.67857142857142) internal successors, (3939), 28 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:53,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:53,291 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] [2023-08-25 06:56:53,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-25 06:56:53,497 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,SelfDestructingSolverStorable12 [2023-08-25 06:56:53,497 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:56:53,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:53,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1746687140, now seen corresponding path program 3 times [2023-08-25 06:56:53,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:53,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090671017] [2023-08-25 06:56:53,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:53,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:54,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:54,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090671017] [2023-08-25 06:56:54,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090671017] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:56:54,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621188851] [2023-08-25 06:56:54,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:56:54,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:54,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:56:54,214 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) [2023-08-25 06:56:54,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 06:56:54,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 06:56:54,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:56:54,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-25 06:56:54,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:56:54,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 06:56:54,747 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 06:56:54,805 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 06:56:54,805 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 23 treesize of output 10 [2023-08-25 06:56:54,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:54,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:56:55,123 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:56:55,123 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 86 treesize of output 70 [2023-08-25 06:56:55,130 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2023-08-25 06:56:55,134 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2023-08-25 06:56:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:55,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621188851] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:56:55,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:56:55,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 27 [2023-08-25 06:56:55,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215441437] [2023-08-25 06:56:55,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:56:55,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-25 06:56:55,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:56:55,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-25 06:56:55,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=714, Unknown=9, NotChecked=0, Total=812 [2023-08-25 06:56:55,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 478 [2023-08-25 06:56:55,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 1391 flow. Second operand has 29 states, 29 states have (on average 122.34482758620689) internal successors, (3548), 29 states have internal predecessors, (3548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:55,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:56:55,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 478 [2023-08-25 06:56:55,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:56:58,325 INFO L124 PetriNetUnfolderBase]: 964/1808 cut-off events. [2023-08-25 06:56:58,325 INFO L125 PetriNetUnfolderBase]: For 15183/15183 co-relation queries the response was YES. [2023-08-25 06:56:58,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10766 conditions, 1808 events. 964/1808 cut-off events. For 15183/15183 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 10057 event pairs, 128 based on Foata normal form. 5/1786 useless extension candidates. Maximal degree in co-relation 10732. Up to 1097 conditions per place. [2023-08-25 06:56:58,342 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 159 selfloop transitions, 45 changer transitions 87/292 dead transitions. [2023-08-25 06:56:58,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 292 transitions, 2462 flow [2023-08-25 06:56:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-25 06:56:58,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-25 06:56:58,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3226 transitions. [2023-08-25 06:56:58,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2699581589958159 [2023-08-25 06:56:58,347 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3226 transitions. [2023-08-25 06:56:58,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3226 transitions. [2023-08-25 06:56:58,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:56:58,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3226 transitions. [2023-08-25 06:56:58,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 129.04) internal successors, (3226), 25 states have internal predecessors, (3226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:58,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 478.0) internal successors, (12428), 26 states have internal predecessors, (12428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:58,358 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 478.0) internal successors, (12428), 26 states have internal predecessors, (12428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:58,358 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 1391 flow. Second operand 25 states and 3226 transitions. [2023-08-25 06:56:58,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 292 transitions, 2462 flow [2023-08-25 06:56:58,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 292 transitions, 2340 flow, removed 26 selfloop flow, removed 17 redundant places. [2023-08-25 06:56:58,391 INFO L231 Difference]: Finished difference. Result has 135 places, 115 transitions, 1322 flow [2023-08-25 06:56:58,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1322, PETRI_PLACES=135, PETRI_TRANSITIONS=115} [2023-08-25 06:56:58,392 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 64 predicate places. [2023-08-25 06:56:58,392 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 115 transitions, 1322 flow [2023-08-25 06:56:58,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 122.34482758620689) internal successors, (3548), 29 states have internal predecessors, (3548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:56:58,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:56:58,393 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] [2023-08-25 06:56:58,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 06:56:58,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-25 06:56:58,599 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:56:58,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:56:58,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1771756332, now seen corresponding path program 4 times [2023-08-25 06:56:58,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:56:58,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310132667] [2023-08-25 06:56:58,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:56:58,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:56:58,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:56:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:56:59,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:56:59,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310132667] [2023-08-25 06:56:59,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310132667] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:56:59,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011171813] [2023-08-25 06:56:59,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:56:59,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:56:59,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:56:59,208 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) [2023-08-25 06:56:59,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 06:57:00,093 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:57:00,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:57:00,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-25 06:57:00,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:57:00,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 06:57:00,225 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-25 06:57:00,329 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 06:57:00,329 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 10 [2023-08-25 06:57:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 06:57:00,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:57:00,624 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:57:00,625 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 86 treesize of output 70 [2023-08-25 06:57:00,629 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2023-08-25 06:57:00,632 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2023-08-25 06:57:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 06:57:00,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011171813] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:57:00,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:57:00,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 23 [2023-08-25 06:57:00,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225382599] [2023-08-25 06:57:00,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:57:00,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 06:57:00,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:57:00,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 06:57:00,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=511, Unknown=10, NotChecked=0, Total=600 [2023-08-25 06:57:00,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-25 06:57:00,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 115 transitions, 1322 flow. Second operand has 25 states, 25 states have (on average 131.36) internal successors, (3284), 25 states have internal predecessors, (3284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:00,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:57:00,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-25 06:57:00,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:57:01,630 INFO L124 PetriNetUnfolderBase]: 393/889 cut-off events. [2023-08-25 06:57:01,630 INFO L125 PetriNetUnfolderBase]: For 7699/7753 co-relation queries the response was YES. [2023-08-25 06:57:01,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5089 conditions, 889 events. 393/889 cut-off events. For 7699/7753 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4851 event pairs, 72 based on Foata normal form. 22/895 useless extension candidates. Maximal degree in co-relation 5052. Up to 634 conditions per place. [2023-08-25 06:57:01,636 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 78 selfloop transitions, 37 changer transitions 30/150 dead transitions. [2023-08-25 06:57:01,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 150 transitions, 1774 flow [2023-08-25 06:57:01,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 06:57:01,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 06:57:01,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2005 transitions. [2023-08-25 06:57:01,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2796373779637378 [2023-08-25 06:57:01,639 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2005 transitions. [2023-08-25 06:57:01,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2005 transitions. [2023-08-25 06:57:01,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:57:01,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2005 transitions. [2023-08-25 06:57:01,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 133.66666666666666) internal successors, (2005), 15 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:01,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 478.0) internal successors, (7648), 16 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:01,645 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 478.0) internal successors, (7648), 16 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:01,645 INFO L175 Difference]: Start difference. First operand has 135 places, 115 transitions, 1322 flow. Second operand 15 states and 2005 transitions. [2023-08-25 06:57:01,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 150 transitions, 1774 flow [2023-08-25 06:57:01,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 150 transitions, 1665 flow, removed 16 selfloop flow, removed 20 redundant places. [2023-08-25 06:57:01,659 INFO L231 Difference]: Finished difference. Result has 121 places, 111 transitions, 1312 flow [2023-08-25 06:57:01,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1312, PETRI_PLACES=121, PETRI_TRANSITIONS=111} [2023-08-25 06:57:01,660 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 50 predicate places. [2023-08-25 06:57:01,660 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 111 transitions, 1312 flow [2023-08-25 06:57:01,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 131.36) internal successors, (3284), 25 states have internal predecessors, (3284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:01,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:57:01,661 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:57:01,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 06:57:01,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-25 06:57:01,867 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:57:01,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:57:01,867 INFO L85 PathProgramCache]: Analyzing trace with hash -708394183, now seen corresponding path program 5 times [2023-08-25 06:57:01,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:57:01,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306250692] [2023-08-25 06:57:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:57:01,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:57:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:57:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:57:02,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:57:02,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306250692] [2023-08-25 06:57:02,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306250692] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:57:02,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552501398] [2023-08-25 06:57:02,532 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:57:02,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:57:02,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:57:02,545 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:57:02,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 06:57:02,871 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 06:57:02,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:57:02,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-25 06:57:02,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:57:03,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 06:57:03,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:57:03,170 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:57:03,170 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 42 treesize of output 26 [2023-08-25 06:57:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 06:57:03,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552501398] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:57:03,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:57:03,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 18 [2023-08-25 06:57:03,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723491769] [2023-08-25 06:57:03,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:57:03,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:57:03,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:57:03,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:57:03,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:57:03,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 478 [2023-08-25 06:57:03,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 111 transitions, 1312 flow. Second operand has 20 states, 20 states have (on average 141.0) internal successors, (2820), 20 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:03,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:57:03,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 478 [2023-08-25 06:57:03,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:57:03,884 INFO L124 PetriNetUnfolderBase]: 280/757 cut-off events. [2023-08-25 06:57:03,884 INFO L125 PetriNetUnfolderBase]: For 4387/4444 co-relation queries the response was YES. [2023-08-25 06:57:03,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 757 events. 280/757 cut-off events. For 4387/4444 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4546 event pairs, 29 based on Foata normal form. 28/776 useless extension candidates. Maximal degree in co-relation 3801. Up to 372 conditions per place. [2023-08-25 06:57:03,889 INFO L140 encePairwiseOnDemand]: 469/478 looper letters, 86 selfloop transitions, 53 changer transitions 4/152 dead transitions. [2023-08-25 06:57:03,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 152 transitions, 1860 flow [2023-08-25 06:57:03,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 06:57:03,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 06:57:03,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2299 transitions. [2023-08-25 06:57:03,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30060146443514646 [2023-08-25 06:57:03,913 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2299 transitions. [2023-08-25 06:57:03,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2299 transitions. [2023-08-25 06:57:03,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:57:03,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2299 transitions. [2023-08-25 06:57:03,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 143.6875) internal successors, (2299), 16 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:03,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:03,920 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 478.0) internal successors, (8126), 17 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:03,920 INFO L175 Difference]: Start difference. First operand has 121 places, 111 transitions, 1312 flow. Second operand 16 states and 2299 transitions. [2023-08-25 06:57:03,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 152 transitions, 1860 flow [2023-08-25 06:57:03,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 152 transitions, 1743 flow, removed 33 selfloop flow, removed 13 redundant places. [2023-08-25 06:57:03,933 INFO L231 Difference]: Finished difference. Result has 109 places, 120 transitions, 1468 flow [2023-08-25 06:57:03,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1468, PETRI_PLACES=109, PETRI_TRANSITIONS=120} [2023-08-25 06:57:03,934 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 38 predicate places. [2023-08-25 06:57:03,934 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 120 transitions, 1468 flow [2023-08-25 06:57:03,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 141.0) internal successors, (2820), 20 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:03,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:57:03,935 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:57:03,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-25 06:57:04,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 06:57:04,141 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:57:04,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:57:04,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1801138085, now seen corresponding path program 6 times [2023-08-25 06:57:04,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:57:04,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727480984] [2023-08-25 06:57:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:57:04,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:57:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:57:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:57:04,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:57:04,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727480984] [2023-08-25 06:57:04,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727480984] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:57:04,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841224339] [2023-08-25 06:57:04,915 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:57:04,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:57:04,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:57:04,916 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:57:04,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-25 06:57:05,507 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 06:57:05,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:57:05,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-25 06:57:05,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:57:05,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 06:57:05,640 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 06:57:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 06:57:05,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:57:05,924 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:57:05,924 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 86 treesize of output 70 [2023-08-25 06:57:05,929 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2023-08-25 06:57:05,932 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2023-08-25 06:57:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 06:57:06,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841224339] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:57:06,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:57:06,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 25 [2023-08-25 06:57:06,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156739115] [2023-08-25 06:57:06,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:57:06,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-25 06:57:06,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:57:06,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-25 06:57:06,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=626, Unknown=1, NotChecked=0, Total=702 [2023-08-25 06:57:06,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-25 06:57:06,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 120 transitions, 1468 flow. Second operand has 27 states, 27 states have (on average 131.07407407407408) internal successors, (3539), 27 states have internal predecessors, (3539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:06,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:57:06,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-25 06:57:06,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:57:07,415 INFO L124 PetriNetUnfolderBase]: 452/1032 cut-off events. [2023-08-25 06:57:07,415 INFO L125 PetriNetUnfolderBase]: For 6537/6572 co-relation queries the response was YES. [2023-08-25 06:57:07,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5656 conditions, 1032 events. 452/1032 cut-off events. For 6537/6572 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6082 event pairs, 36 based on Foata normal form. 20/1043 useless extension candidates. Maximal degree in co-relation 5624. Up to 511 conditions per place. [2023-08-25 06:57:07,425 INFO L140 encePairwiseOnDemand]: 469/478 looper letters, 111 selfloop transitions, 64 changer transitions 4/184 dead transitions. [2023-08-25 06:57:07,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 184 transitions, 2103 flow [2023-08-25 06:57:07,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 06:57:07,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 06:57:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2297 transitions. [2023-08-25 06:57:07,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28267290179670196 [2023-08-25 06:57:07,442 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2297 transitions. [2023-08-25 06:57:07,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2297 transitions. [2023-08-25 06:57:07,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:57:07,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2297 transitions. [2023-08-25 06:57:07,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 135.11764705882354) internal successors, (2297), 17 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:07,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:07,458 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:07,458 INFO L175 Difference]: Start difference. First operand has 109 places, 120 transitions, 1468 flow. Second operand 17 states and 2297 transitions. [2023-08-25 06:57:07,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 184 transitions, 2103 flow [2023-08-25 06:57:07,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 184 transitions, 2008 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-08-25 06:57:07,489 INFO L231 Difference]: Finished difference. Result has 120 places, 128 transitions, 1655 flow [2023-08-25 06:57:07,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1655, PETRI_PLACES=120, PETRI_TRANSITIONS=128} [2023-08-25 06:57:07,489 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 49 predicate places. [2023-08-25 06:57:07,489 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 128 transitions, 1655 flow [2023-08-25 06:57:07,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 131.07407407407408) internal successors, (3539), 27 states have internal predecessors, (3539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:07,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:57:07,490 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:57:07,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-25 06:57:07,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-25 06:57:07,691 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:57:07,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:57:07,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1929747610, now seen corresponding path program 7 times [2023-08-25 06:57:07,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:57:07,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037580266] [2023-08-25 06:57:07,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:57:07,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:57:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:57:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 06:57:07,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:57:07,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037580266] [2023-08-25 06:57:07,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037580266] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:57:07,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513631532] [2023-08-25 06:57:07,761 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:57:07,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:57:07,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:57:07,786 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:57:07,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-25 06:57:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:57:07,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 06:57:07,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:57:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 06:57:08,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:57:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 06:57:08,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513631532] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:57:08,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:57:08,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-25 06:57:08,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200193379] [2023-08-25 06:57:08,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:57:08,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 06:57:08,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:57:08,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 06:57:08,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-25 06:57:08,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 478 [2023-08-25 06:57:08,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 128 transitions, 1655 flow. Second operand has 5 states, 5 states have (on average 185.2) internal successors, (926), 5 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:08,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:57:08,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 478 [2023-08-25 06:57:08,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:57:08,243 INFO L124 PetriNetUnfolderBase]: 396/1005 cut-off events. [2023-08-25 06:57:08,243 INFO L125 PetriNetUnfolderBase]: For 5291/5364 co-relation queries the response was YES. [2023-08-25 06:57:08,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5137 conditions, 1005 events. 396/1005 cut-off events. For 5291/5364 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6297 event pairs, 20 based on Foata normal form. 37/1027 useless extension candidates. Maximal degree in co-relation 5102. Up to 289 conditions per place. [2023-08-25 06:57:08,249 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 72 selfloop transitions, 57 changer transitions 26/170 dead transitions. [2023-08-25 06:57:08,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 170 transitions, 2318 flow [2023-08-25 06:57:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 06:57:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 06:57:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 958 transitions. [2023-08-25 06:57:08,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.400836820083682 [2023-08-25 06:57:08,250 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 958 transitions. [2023-08-25 06:57:08,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 958 transitions. [2023-08-25 06:57:08,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:57:08,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 958 transitions. [2023-08-25 06:57:08,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.6) internal successors, (958), 5 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:08,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:08,253 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:08,254 INFO L175 Difference]: Start difference. First operand has 120 places, 128 transitions, 1655 flow. Second operand 5 states and 958 transitions. [2023-08-25 06:57:08,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 170 transitions, 2318 flow [2023-08-25 06:57:08,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 170 transitions, 2225 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-08-25 06:57:08,267 INFO L231 Difference]: Finished difference. Result has 116 places, 124 transitions, 1555 flow [2023-08-25 06:57:08,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1555, PETRI_PLACES=116, PETRI_TRANSITIONS=124} [2023-08-25 06:57:08,268 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 45 predicate places. [2023-08-25 06:57:08,268 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 124 transitions, 1555 flow [2023-08-25 06:57:08,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 185.2) internal successors, (926), 5 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:08,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:57:08,268 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:57:08,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-25 06:57:08,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-25 06:57:08,476 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:57:08,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:57:08,477 INFO L85 PathProgramCache]: Analyzing trace with hash 140662642, now seen corresponding path program 8 times [2023-08-25 06:57:08,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:57:08,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823731889] [2023-08-25 06:57:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:57:08,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:57:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:57:09,254 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:57:09,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:57:09,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823731889] [2023-08-25 06:57:09,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823731889] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:57:09,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308194120] [2023-08-25 06:57:09,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:57:09,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:57:09,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:57:09,270 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:57:09,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-25 06:57:09,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:57:09,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:57:09,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-25 06:57:09,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:57:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:57:09,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:57:09,837 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-25 06:57:09,837 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 26 treesize of output 14 [2023-08-25 06:57:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:57:10,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308194120] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:57:10,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:57:10,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-08-25 06:57:10,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262646000] [2023-08-25 06:57:10,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:57:10,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-25 06:57:10,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:57:10,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-25 06:57:10,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2023-08-25 06:57:10,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 478 [2023-08-25 06:57:10,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 124 transitions, 1555 flow. Second operand has 30 states, 30 states have (on average 140.7) internal successors, (4221), 30 states have internal predecessors, (4221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:10,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:57:10,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 478 [2023-08-25 06:57:10,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:57:12,834 INFO L124 PetriNetUnfolderBase]: 676/1639 cut-off events. [2023-08-25 06:57:12,835 INFO L125 PetriNetUnfolderBase]: For 12117/12293 co-relation queries the response was YES. [2023-08-25 06:57:12,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8864 conditions, 1639 events. 676/1639 cut-off events. For 12117/12293 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11129 event pairs, 40 based on Foata normal form. 156/1775 useless extension candidates. Maximal degree in co-relation 8827. Up to 667 conditions per place. [2023-08-25 06:57:12,847 INFO L140 encePairwiseOnDemand]: 469/478 looper letters, 210 selfloop transitions, 175 changer transitions 2/396 dead transitions. [2023-08-25 06:57:12,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 396 transitions, 4691 flow [2023-08-25 06:57:12,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-25 06:57:12,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-25 06:57:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 6545 transitions. [2023-08-25 06:57:12,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30427708042770807 [2023-08-25 06:57:12,859 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 6545 transitions. [2023-08-25 06:57:12,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 6545 transitions. [2023-08-25 06:57:12,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:57:12,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 6545 transitions. [2023-08-25 06:57:12,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 145.44444444444446) internal successors, (6545), 45 states have internal predecessors, (6545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:12,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 478.0) internal successors, (21988), 46 states have internal predecessors, (21988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:12,888 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 478.0) internal successors, (21988), 46 states have internal predecessors, (21988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:12,888 INFO L175 Difference]: Start difference. First operand has 116 places, 124 transitions, 1555 flow. Second operand 45 states and 6545 transitions. [2023-08-25 06:57:12,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 396 transitions, 4691 flow [2023-08-25 06:57:12,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 396 transitions, 4071 flow, removed 286 selfloop flow, removed 9 redundant places. [2023-08-25 06:57:12,921 INFO L231 Difference]: Finished difference. Result has 166 places, 254 transitions, 3514 flow [2023-08-25 06:57:12,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=1394, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3514, PETRI_PLACES=166, PETRI_TRANSITIONS=254} [2023-08-25 06:57:12,922 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 95 predicate places. [2023-08-25 06:57:12,922 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 254 transitions, 3514 flow [2023-08-25 06:57:12,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 140.7) internal successors, (4221), 30 states have internal predecessors, (4221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:12,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:57:12,923 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:57:12,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-25 06:57:13,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:57:13,132 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:57:13,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:57:13,133 INFO L85 PathProgramCache]: Analyzing trace with hash -172282578, now seen corresponding path program 9 times [2023-08-25 06:57:13,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:57:13,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837921977] [2023-08-25 06:57:13,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:57:13,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:57:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:57:13,655 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:57:13,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:57:13,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837921977] [2023-08-25 06:57:13,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837921977] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:57:13,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217520414] [2023-08-25 06:57:13,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:57:13,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:57:13,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:57:13,656 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:57:13,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-25 06:57:14,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 06:57:14,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:57:14,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 06:57:14,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:57:14,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 06:57:14,142 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-25 06:57:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 06:57:14,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:57:14,282 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:57:14,283 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 47 treesize of output 40 [2023-08-25 06:57:14,286 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-25 06:57:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 06:57:14,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217520414] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:57:14,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:57:14,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 23 [2023-08-25 06:57:14,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42743282] [2023-08-25 06:57:14,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:57:14,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 06:57:14,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:57:14,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 06:57:14,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=489, Unknown=2, NotChecked=0, Total=552 [2023-08-25 06:57:14,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 478 [2023-08-25 06:57:14,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 254 transitions, 3514 flow. Second operand has 24 states, 24 states have (on average 133.125) internal successors, (3195), 24 states have internal predecessors, (3195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:14,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:57:14,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 478 [2023-08-25 06:57:14,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:57:16,700 INFO L124 PetriNetUnfolderBase]: 1588/3180 cut-off events. [2023-08-25 06:57:16,701 INFO L125 PetriNetUnfolderBase]: For 84355/84502 co-relation queries the response was YES. [2023-08-25 06:57:16,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21758 conditions, 3180 events. 1588/3180 cut-off events. For 84355/84502 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 21137 event pairs, 47 based on Foata normal form. 179/3356 useless extension candidates. Maximal degree in co-relation 21702. Up to 1257 conditions per place. [2023-08-25 06:57:16,723 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 283 selfloop transitions, 297 changer transitions 5/590 dead transitions. [2023-08-25 06:57:16,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 590 transitions, 7868 flow [2023-08-25 06:57:16,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-25 06:57:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-25 06:57:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4448 transitions. [2023-08-25 06:57:16,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2907949790794979 [2023-08-25 06:57:16,727 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4448 transitions. [2023-08-25 06:57:16,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4448 transitions. [2023-08-25 06:57:16,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:57:16,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4448 transitions. [2023-08-25 06:57:16,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 139.0) internal successors, (4448), 32 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:16,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 478.0) internal successors, (15774), 33 states have internal predecessors, (15774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:16,738 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 478.0) internal successors, (15774), 33 states have internal predecessors, (15774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:16,738 INFO L175 Difference]: Start difference. First operand has 166 places, 254 transitions, 3514 flow. Second operand 32 states and 4448 transitions. [2023-08-25 06:57:16,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 590 transitions, 7868 flow [2023-08-25 06:57:16,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 590 transitions, 6354 flow, removed 744 selfloop flow, removed 10 redundant places. [2023-08-25 06:57:16,962 INFO L231 Difference]: Finished difference. Result has 194 places, 407 transitions, 5511 flow [2023-08-25 06:57:16,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=2738, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=5511, PETRI_PLACES=194, PETRI_TRANSITIONS=407} [2023-08-25 06:57:16,963 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 123 predicate places. [2023-08-25 06:57:16,963 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 407 transitions, 5511 flow [2023-08-25 06:57:16,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 133.125) internal successors, (3195), 24 states have internal predecessors, (3195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:16,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:57:16,964 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:57:16,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-25 06:57:17,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:57:17,170 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:57:17,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:57:17,170 INFO L85 PathProgramCache]: Analyzing trace with hash 248632361, now seen corresponding path program 10 times [2023-08-25 06:57:17,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:57:17,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083476379] [2023-08-25 06:57:17,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:57:17,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:57:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:57:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:57:17,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:57:17,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083476379] [2023-08-25 06:57:17,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083476379] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:57:17,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970160244] [2023-08-25 06:57:17,866 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:57:17,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:57:17,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:57:17,867 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:57:17,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-25 06:57:20,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:57:20,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:57:20,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-25 06:57:20,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:57:20,426 INFO L322 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-08-25 06:57:20,426 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 38 [2023-08-25 06:57:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:57:20,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:57:20,977 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:57:20,978 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 91 treesize of output 148 [2023-08-25 06:57:22,289 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:57:22,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970160244] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:57:22,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:57:22,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 35 [2023-08-25 06:57:22,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553950276] [2023-08-25 06:57:22,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:57:22,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-25 06:57:22,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:57:22,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-25 06:57:22,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1164, Unknown=0, NotChecked=0, Total=1332 [2023-08-25 06:57:22,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 478 [2023-08-25 06:57:22,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 407 transitions, 5511 flow. Second operand has 37 states, 37 states have (on average 140.56756756756758) internal successors, (5201), 37 states have internal predecessors, (5201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:22,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:57:22,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 478 [2023-08-25 06:57:22,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:57:24,199 INFO L124 PetriNetUnfolderBase]: 1158/2783 cut-off events. [2023-08-25 06:57:24,199 INFO L125 PetriNetUnfolderBase]: For 36987/37134 co-relation queries the response was YES. [2023-08-25 06:57:24,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15946 conditions, 2783 events. 1158/2783 cut-off events. For 36987/37134 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 21138 event pairs, 120 based on Foata normal form. 21/2758 useless extension candidates. Maximal degree in co-relation 15882. Up to 1935 conditions per place. [2023-08-25 06:57:24,224 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 387 selfloop transitions, 49 changer transitions 29/474 dead transitions. [2023-08-25 06:57:24,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 474 transitions, 6944 flow [2023-08-25 06:57:24,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 06:57:24,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 06:57:24,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3163 transitions. [2023-08-25 06:57:24,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3007797641688855 [2023-08-25 06:57:24,227 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3163 transitions. [2023-08-25 06:57:24,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3163 transitions. [2023-08-25 06:57:24,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:57:24,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3163 transitions. [2023-08-25 06:57:24,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 143.77272727272728) internal successors, (3163), 22 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:24,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 478.0) internal successors, (10994), 23 states have internal predecessors, (10994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:24,236 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 478.0) internal successors, (10994), 23 states have internal predecessors, (10994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:24,236 INFO L175 Difference]: Start difference. First operand has 194 places, 407 transitions, 5511 flow. Second operand 22 states and 3163 transitions. [2023-08-25 06:57:24,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 474 transitions, 6944 flow [2023-08-25 06:57:24,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 474 transitions, 5658 flow, removed 536 selfloop flow, removed 17 redundant places. [2023-08-25 06:57:24,470 INFO L231 Difference]: Finished difference. Result has 209 places, 417 transitions, 4633 flow [2023-08-25 06:57:24,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=4381, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4633, PETRI_PLACES=209, PETRI_TRANSITIONS=417} [2023-08-25 06:57:24,470 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 138 predicate places. [2023-08-25 06:57:24,470 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 417 transitions, 4633 flow [2023-08-25 06:57:24,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 140.56756756756758) internal successors, (5201), 37 states have internal predecessors, (5201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:24,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:57:24,471 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:57:24,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-25 06:57:24,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:57:24,688 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:57:24,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:57:24,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1419433501, now seen corresponding path program 11 times [2023-08-25 06:57:24,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:57:24,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243360848] [2023-08-25 06:57:24,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:57:24,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:57:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:57:25,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:57:25,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:57:25,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243360848] [2023-08-25 06:57:25,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243360848] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:57:25,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973418058] [2023-08-25 06:57:25,395 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:57:25,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:57:25,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:57:25,396 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:57:25,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-25 06:57:26,247 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 06:57:26,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:57:26,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 55 conjunts are in the unsatisfiable core [2023-08-25 06:57:26,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:57:26,622 INFO L322 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2023-08-25 06:57:26,622 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 15 [2023-08-25 06:57:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:57:26,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:57:26,929 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-25 06:57:26,930 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 62 [2023-08-25 06:57:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:57:27,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973418058] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:57:27,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:57:27,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 33 [2023-08-25 06:57:27,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002588357] [2023-08-25 06:57:27,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:57:27,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-25 06:57:27,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:57:27,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-25 06:57:27,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2023-08-25 06:57:27,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 478 [2023-08-25 06:57:27,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 417 transitions, 4633 flow. Second operand has 35 states, 35 states have (on average 140.62857142857143) internal successors, (4922), 35 states have internal predecessors, (4922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:27,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:57:27,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 478 [2023-08-25 06:57:27,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:57:30,790 INFO L124 PetriNetUnfolderBase]: 1503/3646 cut-off events. [2023-08-25 06:57:30,791 INFO L125 PetriNetUnfolderBase]: For 18365/18596 co-relation queries the response was YES. [2023-08-25 06:57:30,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17289 conditions, 3646 events. 1503/3646 cut-off events. For 18365/18596 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 29611 event pairs, 155 based on Foata normal form. 41/3574 useless extension candidates. Maximal degree in co-relation 17222. Up to 1054 conditions per place. [2023-08-25 06:57:30,816 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 310 selfloop transitions, 303 changer transitions 34/656 dead transitions. [2023-08-25 06:57:30,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 656 transitions, 8044 flow [2023-08-25 06:57:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-25 06:57:30,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-25 06:57:30,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4472 transitions. [2023-08-25 06:57:30,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30179511405047915 [2023-08-25 06:57:30,820 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4472 transitions. [2023-08-25 06:57:30,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4472 transitions. [2023-08-25 06:57:30,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:57:30,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4472 transitions. [2023-08-25 06:57:30,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 144.25806451612902) internal successors, (4472), 31 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:30,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 478.0) internal successors, (15296), 32 states have internal predecessors, (15296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:30,832 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 478.0) internal successors, (15296), 32 states have internal predecessors, (15296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:30,832 INFO L175 Difference]: Start difference. First operand has 209 places, 417 transitions, 4633 flow. Second operand 31 states and 4472 transitions. [2023-08-25 06:57:30,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 656 transitions, 8044 flow [2023-08-25 06:57:30,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 656 transitions, 7913 flow, removed 31 selfloop flow, removed 13 redundant places. [2023-08-25 06:57:30,945 INFO L231 Difference]: Finished difference. Result has 232 places, 547 transitions, 7182 flow [2023-08-25 06:57:30,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=4554, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=7182, PETRI_PLACES=232, PETRI_TRANSITIONS=547} [2023-08-25 06:57:30,946 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 161 predicate places. [2023-08-25 06:57:30,946 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 547 transitions, 7182 flow [2023-08-25 06:57:30,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 140.62857142857143) internal successors, (4922), 35 states have internal predecessors, (4922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:57:30,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:57:30,947 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:57:30,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-25 06:57:31,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:57:31,153 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 06:57:31,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:57:31,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1790162221, now seen corresponding path program 12 times [2023-08-25 06:57:31,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:57:31,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000566303] [2023-08-25 06:57:31,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:57:31,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:57:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:57:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:57:31,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:57:31,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000566303] [2023-08-25 06:57:31,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000566303] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:57:31,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552359408] [2023-08-25 06:57:31,850 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:57:31,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:57:31,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:57:31,851 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:57:31,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-25 06:57:33,048 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 06:57:33,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:57:33,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 69 conjunts are in the unsatisfiable core [2023-08-25 06:57:33,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:57:33,094 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 06:57:33,125 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 06:57:33,160 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 06:57:33,207 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 06:57:33,247 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 06:57:33,560 INFO L322 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2023-08-25 06:57:33,561 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 38 [2023-08-25 06:57:33,768 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:57:33,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:57:39,305 INFO L322 Elim1Store]: treesize reduction 104, result has 49.3 percent of original size [2023-08-25 06:57:39,307 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 393 treesize of output 295 [2023-08-25 06:57:39,331 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:57:39,333 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 232 [2023-08-25 06:57:39,406 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:57:39,406 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 856 treesize of output 927 [2023-08-25 06:57:39,465 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:57:39,465 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 508 treesize of output 503 [2023-08-25 06:57:39,528 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:57:39,529 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 458 treesize of output 478 [2023-08-25 06:57:39,652 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:57:39,652 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 468 treesize of output 551 [2023-08-25 06:57:39,722 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:57:39,723 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 408 treesize of output 428 [2023-08-25 06:57:39,792 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 06:57:39,792 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 383 treesize of output 378 [2023-08-25 06:58:37,942 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-25 06:58:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:58:38,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552359408] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:58:38,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:58:38,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 35 [2023-08-25 06:58:38,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46996294] [2023-08-25 06:58:38,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:58:38,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-25 06:58:38,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:58:38,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-25 06:58:38,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1168, Unknown=6, NotChecked=0, Total=1332 [2023-08-25 06:58:38,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 478 [2023-08-25 06:58:38,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 547 transitions, 7182 flow. Second operand has 37 states, 37 states have (on average 122.08108108108108) internal successors, (4517), 37 states have internal predecessors, (4517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:58:38,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:58:38,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 478 [2023-08-25 06:58:38,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:58:45,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 06:58:56,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 06:58:58,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 06:59:01,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 06:59:03,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 06:59:05,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 06:59:14,626 WARN L234 SmtUtils]: Spent 8.61s on a formula simplification. DAG size of input: 122 DAG size of output: 113 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 06:59:23,161 WARN L234 SmtUtils]: Spent 8.42s on a formula simplification. DAG size of input: 128 DAG size of output: 94 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 06:59:26,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 06:59:28,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 06:59:30,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 06:59:37,481 WARN L234 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 131 DAG size of output: 97 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 06:59:46,183 WARN L234 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 130 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 06:59:55,193 WARN L234 SmtUtils]: Spent 8.35s on a formula simplification. DAG size of input: 129 DAG size of output: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 06:59:57,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 06:59:59,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 07:00:03,357 INFO L124 PetriNetUnfolderBase]: 6693/11846 cut-off events. [2023-08-25 07:00:03,357 INFO L125 PetriNetUnfolderBase]: For 74310/74313 co-relation queries the response was YES. [2023-08-25 07:00:03,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69665 conditions, 11846 events. 6693/11846 cut-off events. For 74310/74313 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 86471 event pairs, 623 based on Foata normal form. 22/11609 useless extension candidates. Maximal degree in co-relation 69592. Up to 5972 conditions per place. [2023-08-25 07:00:03,543 INFO L140 encePairwiseOnDemand]: 469/478 looper letters, 716 selfloop transitions, 290 changer transitions 126/1133 dead transitions. [2023-08-25 07:00:03,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 1133 transitions, 13526 flow [2023-08-25 07:00:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-25 07:00:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-25 07:00:03,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 5750 transitions. [2023-08-25 07:00:03,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2733929250665652 [2023-08-25 07:00:03,549 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 5750 transitions. [2023-08-25 07:00:03,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 5750 transitions. [2023-08-25 07:00:03,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:00:03,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 5750 transitions. [2023-08-25 07:00:03,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 130.6818181818182) internal successors, (5750), 44 states have internal predecessors, (5750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:00:03,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 478.0) internal successors, (21510), 45 states have internal predecessors, (21510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:00:03,565 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 478.0) internal successors, (21510), 45 states have internal predecessors, (21510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:00:03,565 INFO L175 Difference]: Start difference. First operand has 232 places, 547 transitions, 7182 flow. Second operand 44 states and 5750 transitions. [2023-08-25 07:00:03,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 1133 transitions, 13526 flow [2023-08-25 07:00:05,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 1133 transitions, 13071 flow, removed 192 selfloop flow, removed 18 redundant places. [2023-08-25 07:00:05,285 INFO L231 Difference]: Finished difference. Result has 278 places, 726 transitions, 10427 flow [2023-08-25 07:00:05,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=6805, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=10427, PETRI_PLACES=278, PETRI_TRANSITIONS=726} [2023-08-25 07:00:05,285 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 207 predicate places. [2023-08-25 07:00:05,285 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 726 transitions, 10427 flow [2023-08-25 07:00:05,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 122.08108108108108) internal successors, (4517), 37 states have internal predecessors, (4517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:00:05,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:00:05,286 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:00:05,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-25 07:00:05,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:00:05,493 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:00:05,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:00:05,493 INFO L85 PathProgramCache]: Analyzing trace with hash -404371789, now seen corresponding path program 13 times [2023-08-25 07:00:05,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:00:05,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830612010] [2023-08-25 07:00:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:00:05,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:00:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:00:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:00:06,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:00:06,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830612010] [2023-08-25 07:00:06,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830612010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:00:06,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127994298] [2023-08-25 07:00:06,665 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 07:00:06,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:00:06,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:00:06,667 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:00:06,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-25 07:00:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:00:06,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-25 07:00:06,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:00:07,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:00:07,110 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-25 07:00:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:00:07,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:00:07,560 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse5 (* c_~q_front~0 4))) (let ((.cse3 (+ c_~q~0.offset (* 4 c_~q_back~0))) (.cse1 (+ .cse5 c_~q~0.offset 4)) (.cse2 (+ .cse5 c_~q~0.offset))) (and (forall ((v_ArrVal_2720 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2720) c_~q~0.base))) (or (< |c_thread1Thread1of1ForFork0_~i~0#1| (+ c_~s~0 (select .cse0 .cse1) (select .cse0 .cse2))) (not (= (select .cse0 .cse3) 1))))) (forall ((v_ArrVal_2720 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2720) c_~q~0.base))) (or (not (= (select .cse4 .cse3) 1)) (< (+ c_~s~0 (select .cse4 .cse1) (select .cse4 .cse2)) (+ 2 |c_thread1Thread1of1ForFork0_~i~0#1|)))))))) is different from false [2023-08-25 07:00:07,585 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:00:07,585 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 170 [2023-08-25 07:00:07,598 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:00:07,599 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 128 [2023-08-25 07:00:07,634 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:00:07,634 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 108 [2023-08-25 07:00:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 07:00:08,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127994298] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:00:08,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:00:08,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 32 [2023-08-25 07:00:08,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448207752] [2023-08-25 07:00:08,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:00:08,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-25 07:00:08,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:00:08,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-25 07:00:08,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=966, Unknown=1, NotChecked=62, Total=1122 [2023-08-25 07:00:08,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-25 07:00:08,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 726 transitions, 10427 flow. Second operand has 34 states, 34 states have (on average 131.0) internal successors, (4454), 34 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:00:08,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:00:08,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-25 07:00:08,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:00:13,434 INFO L124 PetriNetUnfolderBase]: 2779/5697 cut-off events. [2023-08-25 07:00:13,435 INFO L125 PetriNetUnfolderBase]: For 50234/50408 co-relation queries the response was YES. [2023-08-25 07:00:13,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34675 conditions, 5697 events. 2779/5697 cut-off events. For 50234/50408 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 43659 event pairs, 536 based on Foata normal form. 29/5644 useless extension candidates. Maximal degree in co-relation 34583. Up to 4955 conditions per place. [2023-08-25 07:00:13,486 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 730 selfloop transitions, 112 changer transitions 7/854 dead transitions. [2023-08-25 07:00:13,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 854 transitions, 12829 flow [2023-08-25 07:00:13,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-25 07:00:13,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-25 07:00:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3786 transitions. [2023-08-25 07:00:13,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2828750747160789 [2023-08-25 07:00:13,491 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3786 transitions. [2023-08-25 07:00:13,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3786 transitions. [2023-08-25 07:00:13,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:00:13,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3786 transitions. [2023-08-25 07:00:13,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 135.21428571428572) internal successors, (3786), 28 states have internal predecessors, (3786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:00:13,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 478.0) internal successors, (13862), 29 states have internal predecessors, (13862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:00:13,512 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 478.0) internal successors, (13862), 29 states have internal predecessors, (13862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:00:13,512 INFO L175 Difference]: Start difference. First operand has 278 places, 726 transitions, 10427 flow. Second operand 28 states and 3786 transitions. [2023-08-25 07:00:13,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 854 transitions, 12829 flow [2023-08-25 07:00:13,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 854 transitions, 12485 flow, removed 159 selfloop flow, removed 13 redundant places. [2023-08-25 07:00:13,990 INFO L231 Difference]: Finished difference. Result has 292 places, 754 transitions, 10772 flow [2023-08-25 07:00:13,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=10087, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=10772, PETRI_PLACES=292, PETRI_TRANSITIONS=754} [2023-08-25 07:00:13,992 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 221 predicate places. [2023-08-25 07:00:13,992 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 754 transitions, 10772 flow [2023-08-25 07:00:13,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 131.0) internal successors, (4454), 34 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:00:13,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:00:13,993 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:00:13,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-25 07:00:14,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:00:14,196 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:00:14,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:00:14,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1505678261, now seen corresponding path program 14 times [2023-08-25 07:00:14,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:00:14,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805876825] [2023-08-25 07:00:14,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:00:14,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:00:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:00:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:00:15,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:00:15,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805876825] [2023-08-25 07:00:15,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805876825] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:00:15,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992215997] [2023-08-25 07:00:15,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:00:15,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:00:15,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:00:15,217 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:00:15,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-25 07:00:15,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:00:15,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:00:15,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 70 conjunts are in the unsatisfiable core [2023-08-25 07:00:15,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:00:15,684 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 07:00:15,731 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 07:00:15,762 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 07:00:15,802 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 07:00:15,830 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 07:00:16,061 INFO L322 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2023-08-25 07:00:16,061 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 15 [2023-08-25 07:00:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:00:16,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:00:19,503 INFO L322 Elim1Store]: treesize reduction 104, result has 49.3 percent of original size [2023-08-25 07:00:19,503 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 393 treesize of output 295 [2023-08-25 07:00:19,510 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:00:19,512 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 232 [2023-08-25 07:00:19,591 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:00:19,592 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 864 treesize of output 902 [2023-08-25 07:00:19,654 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:00:19,654 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 508 treesize of output 528 [2023-08-25 07:00:19,711 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:00:19,712 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 483 treesize of output 478 [2023-08-25 07:00:19,767 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:00:19,768 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 433 treesize of output 453 [2023-08-25 07:00:19,850 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:00:19,851 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 408 treesize of output 403 [2023-08-25 07:00:19,958 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:00:19,959 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 393 treesize of output 476 [2023-08-25 07:00:51,003 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-25 07:00:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:00:51,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992215997] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:00:51,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:00:51,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 36 [2023-08-25 07:00:51,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608555002] [2023-08-25 07:00:51,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:00:51,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-25 07:00:51,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:00:51,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-25 07:00:51,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1233, Unknown=4, NotChecked=0, Total=1406 [2023-08-25 07:00:51,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 478 [2023-08-25 07:00:51,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 754 transitions, 10772 flow. Second operand has 38 states, 38 states have (on average 122.02631578947368) internal successors, (4637), 38 states have internal predecessors, (4637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:00:51,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:00:51,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 478 [2023-08-25 07:00:51,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:01:04,843 INFO L124 PetriNetUnfolderBase]: 10158/17223 cut-off events. [2023-08-25 07:01:04,843 INFO L125 PetriNetUnfolderBase]: For 112596/112599 co-relation queries the response was YES. [2023-08-25 07:01:04,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108440 conditions, 17223 events. 10158/17223 cut-off events. For 112596/112599 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 125869 event pairs, 901 based on Foata normal form. 15/16895 useless extension candidates. Maximal degree in co-relation 108346. Up to 8936 conditions per place. [2023-08-25 07:01:05,058 INFO L140 encePairwiseOnDemand]: 469/478 looper letters, 802 selfloop transitions, 575 changer transitions 61/1439 dead transitions. [2023-08-25 07:01:05,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 1439 transitions, 20534 flow [2023-08-25 07:01:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-25 07:01:05,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-25 07:01:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4180 transitions. [2023-08-25 07:01:05,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27327405857740583 [2023-08-25 07:01:05,062 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4180 transitions. [2023-08-25 07:01:05,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4180 transitions. [2023-08-25 07:01:05,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:01:05,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4180 transitions. [2023-08-25 07:01:05,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 130.625) internal successors, (4180), 32 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:05,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 478.0) internal successors, (15774), 33 states have internal predecessors, (15774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:05,073 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 478.0) internal successors, (15774), 33 states have internal predecessors, (15774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:05,073 INFO L175 Difference]: Start difference. First operand has 292 places, 754 transitions, 10772 flow. Second operand 32 states and 4180 transitions. [2023-08-25 07:01:05,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 1439 transitions, 20534 flow [2023-08-25 07:01:08,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 1439 transitions, 20322 flow, removed 47 selfloop flow, removed 14 redundant places. [2023-08-25 07:01:08,060 INFO L231 Difference]: Finished difference. Result has 325 places, 1120 transitions, 18005 flow [2023-08-25 07:01:08,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=10564, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=18005, PETRI_PLACES=325, PETRI_TRANSITIONS=1120} [2023-08-25 07:01:08,061 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 254 predicate places. [2023-08-25 07:01:08,061 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 1120 transitions, 18005 flow [2023-08-25 07:01:08,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 122.02631578947368) internal successors, (4637), 38 states have internal predecessors, (4637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:08,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:01:08,062 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:01:08,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-25 07:01:08,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-25 07:01:08,268 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:01:08,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:01:08,269 INFO L85 PathProgramCache]: Analyzing trace with hash 639604663, now seen corresponding path program 15 times [2023-08-25 07:01:08,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:01:08,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818990132] [2023-08-25 07:01:08,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:01:08,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:01:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:01:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:01:09,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:01:09,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818990132] [2023-08-25 07:01:09,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818990132] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:01:09,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095128360] [2023-08-25 07:01:09,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 07:01:09,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:01:09,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:01:09,120 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:01:09,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-25 07:01:09,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 07:01:09,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:01:09,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-25 07:01:09,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:01:09,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:01:09,762 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2023-08-25 07:01:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 07:01:09,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:01:10,274 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:01:10,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 197 treesize of output 166 [2023-08-25 07:01:10,283 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:01:10,284 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 102 [2023-08-25 07:01:10,289 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:01:10,290 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 83 [2023-08-25 07:01:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 07:01:10,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095128360] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:01:10,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:01:10,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 30 [2023-08-25 07:01:10,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545081852] [2023-08-25 07:01:10,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:01:10,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 07:01:10,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:01:10,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 07:01:10,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=905, Unknown=1, NotChecked=0, Total=992 [2023-08-25 07:01:10,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-25 07:01:10,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 1120 transitions, 18005 flow. Second operand has 32 states, 32 states have (on average 131.0625) internal successors, (4194), 32 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:10,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:01:10,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-25 07:01:10,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:01:14,654 INFO L124 PetriNetUnfolderBase]: 3969/7859 cut-off events. [2023-08-25 07:01:14,659 INFO L125 PetriNetUnfolderBase]: For 77590/77774 co-relation queries the response was YES. [2023-08-25 07:01:14,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53315 conditions, 7859 events. 3969/7859 cut-off events. For 77590/77774 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 62046 event pairs, 719 based on Foata normal form. 31/7785 useless extension candidates. Maximal degree in co-relation 53206. Up to 7051 conditions per place. [2023-08-25 07:01:14,742 INFO L140 encePairwiseOnDemand]: 469/478 looper letters, 1096 selfloop transitions, 116 changer transitions 4/1221 dead transitions. [2023-08-25 07:01:14,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1221 transitions, 20907 flow [2023-08-25 07:01:14,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-25 07:01:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-25 07:01:14,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3384 transitions. [2023-08-25 07:01:14,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2831799163179916 [2023-08-25 07:01:14,754 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3384 transitions. [2023-08-25 07:01:14,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3384 transitions. [2023-08-25 07:01:14,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:01:14,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3384 transitions. [2023-08-25 07:01:14,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 135.36) internal successors, (3384), 25 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:14,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 478.0) internal successors, (12428), 26 states have internal predecessors, (12428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:14,763 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 478.0) internal successors, (12428), 26 states have internal predecessors, (12428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:14,763 INFO L175 Difference]: Start difference. First operand has 325 places, 1120 transitions, 18005 flow. Second operand 25 states and 3384 transitions. [2023-08-25 07:01:14,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1221 transitions, 20907 flow [2023-08-25 07:01:15,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1221 transitions, 20314 flow, removed 264 selfloop flow, removed 14 redundant places. [2023-08-25 07:01:15,904 INFO L231 Difference]: Finished difference. Result has 340 places, 1131 transitions, 17885 flow [2023-08-25 07:01:15,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=17412, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1006, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=17885, PETRI_PLACES=340, PETRI_TRANSITIONS=1131} [2023-08-25 07:01:15,905 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 269 predicate places. [2023-08-25 07:01:15,905 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 1131 transitions, 17885 flow [2023-08-25 07:01:15,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 131.0625) internal successors, (4194), 32 states have internal predecessors, (4194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:15,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:01:15,906 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:01:15,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-25 07:01:16,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-25 07:01:16,113 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:01:16,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:01:16,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2083673213, now seen corresponding path program 16 times [2023-08-25 07:01:16,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:01:16,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211797605] [2023-08-25 07:01:16,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:01:16,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:01:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:01:16,946 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:01:16,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:01:16,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211797605] [2023-08-25 07:01:16,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211797605] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:01:16,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625994039] [2023-08-25 07:01:16,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 07:01:16,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:01:16,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:01:16,948 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:01:16,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-25 07:01:23,926 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 07:01:23,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:01:23,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 61 conjunts are in the unsatisfiable core [2023-08-25 07:01:23,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:01:24,240 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:01:24,240 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 7 [2023-08-25 07:01:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:01:24,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:01:24,502 INFO L322 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-08-25 07:01:24,503 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 52 [2023-08-25 07:01:24,790 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:01:24,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625994039] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:01:24,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:01:24,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 33 [2023-08-25 07:01:24,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634584438] [2023-08-25 07:01:24,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:01:24,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-25 07:01:24,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:01:24,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-25 07:01:24,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=994, Unknown=0, NotChecked=0, Total=1190 [2023-08-25 07:01:24,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 478 [2023-08-25 07:01:24,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 1131 transitions, 17885 flow. Second operand has 35 states, 35 states have (on average 140.6) internal successors, (4921), 35 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:24,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:01:24,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 478 [2023-08-25 07:01:24,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:01:29,567 INFO L124 PetriNetUnfolderBase]: 3261/7787 cut-off events. [2023-08-25 07:01:29,567 INFO L125 PetriNetUnfolderBase]: For 55467/56181 co-relation queries the response was YES. [2023-08-25 07:01:29,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47231 conditions, 7787 events. 3261/7787 cut-off events. For 55467/56181 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 72609 event pairs, 512 based on Foata normal form. 73/7690 useless extension candidates. Maximal degree in co-relation 47118. Up to 4744 conditions per place. [2023-08-25 07:01:29,785 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 992 selfloop transitions, 383 changer transitions 41/1425 dead transitions. [2023-08-25 07:01:29,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 1425 transitions, 24272 flow [2023-08-25 07:01:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-25 07:01:29,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-25 07:01:29,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6190 transitions. [2023-08-25 07:01:29,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30115792546462977 [2023-08-25 07:01:29,789 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6190 transitions. [2023-08-25 07:01:29,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6190 transitions. [2023-08-25 07:01:29,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:01:29,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6190 transitions. [2023-08-25 07:01:29,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 143.95348837209303) internal successors, (6190), 43 states have internal predecessors, (6190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:29,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 478.0) internal successors, (21032), 44 states have internal predecessors, (21032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:29,804 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 478.0) internal successors, (21032), 44 states have internal predecessors, (21032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:29,804 INFO L175 Difference]: Start difference. First operand has 340 places, 1131 transitions, 17885 flow. Second operand 43 states and 6190 transitions. [2023-08-25 07:01:29,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 1425 transitions, 24272 flow [2023-08-25 07:01:30,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 1425 transitions, 24028 flow, removed 29 selfloop flow, removed 17 redundant places. [2023-08-25 07:01:30,986 INFO L231 Difference]: Finished difference. Result has 383 places, 1280 transitions, 21493 flow [2023-08-25 07:01:30,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=17678, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=770, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=21493, PETRI_PLACES=383, PETRI_TRANSITIONS=1280} [2023-08-25 07:01:30,987 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 312 predicate places. [2023-08-25 07:01:30,988 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 1280 transitions, 21493 flow [2023-08-25 07:01:30,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 140.6) internal successors, (4921), 35 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:30,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:01:30,989 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:01:31,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-25 07:01:31,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-25 07:01:31,200 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:01:31,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:01:31,200 INFO L85 PathProgramCache]: Analyzing trace with hash 559244335, now seen corresponding path program 17 times [2023-08-25 07:01:31,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:01:31,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221734081] [2023-08-25 07:01:31,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:01:31,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:01:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:01:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:01:32,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:01:32,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221734081] [2023-08-25 07:01:32,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221734081] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:01:32,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817946216] [2023-08-25 07:01:32,267 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 07:01:32,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:01:32,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:01:32,268 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:01:32,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-25 07:01:33,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 07:01:33,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:01:33,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 63 conjunts are in the unsatisfiable core [2023-08-25 07:01:33,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:01:33,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:01:33,358 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2023-08-25 07:01:33,677 INFO L322 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2023-08-25 07:01:33,678 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 15 [2023-08-25 07:01:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:01:33,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:01:34,001 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n~0 c_~q_back~0) (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0) (let ((.cse6 (* c_~q_front~0 4))) (let ((.cse2 (+ .cse6 c_~q~0.offset)) (.cse3 (+ .cse6 c_~q~0.offset 4))) (and (forall ((v_ArrVal_3370 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3370) c_~q~0.base))) (let ((.cse0 (select .cse1 .cse3))) (or (= .cse0 0) (<= c_~N~0 (+ c_~s~0 .cse0 (select .cse1 .cse2))))))) (forall ((v_ArrVal_3370 (Array Int Int))) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3370) c_~q~0.base))) (let ((.cse4 (select .cse5 .cse3))) (or (< (+ c_~s~0 .cse4 (select .cse5 .cse2)) (+ c_~N~0 1)) (= .cse4 0))))))))) is different from false [2023-08-25 07:01:34,141 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-25 07:01:34,141 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 200 treesize of output 168 [2023-08-25 07:01:34,153 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:01:34,153 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 103 [2023-08-25 07:01:34,161 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:01:34,161 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 83 [2023-08-25 07:01:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:01:34,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817946216] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:01:34,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:01:34,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 36 [2023-08-25 07:01:34,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129268273] [2023-08-25 07:01:34,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:01:34,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-25 07:01:34,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:01:34,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-25 07:01:34,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1180, Unknown=2, NotChecked=70, Total=1406 [2023-08-25 07:01:34,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-25 07:01:34,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 1280 transitions, 21493 flow. Second operand has 38 states, 38 states have (on average 130.71052631578948) internal successors, (4967), 38 states have internal predecessors, (4967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:34,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:01:34,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-25 07:01:34,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:01:40,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 07:01:44,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 07:01:48,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 07:01:54,149 INFO L124 PetriNetUnfolderBase]: 5783/12005 cut-off events. [2023-08-25 07:01:54,149 INFO L125 PetriNetUnfolderBase]: For 137290/137639 co-relation queries the response was YES. [2023-08-25 07:01:54,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81858 conditions, 12005 events. 5783/12005 cut-off events. For 137290/137639 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 107680 event pairs, 552 based on Foata normal form. 130/11983 useless extension candidates. Maximal degree in co-relation 81728. Up to 4867 conditions per place. [2023-08-25 07:01:54,476 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 751 selfloop transitions, 1083 changer transitions 71/1910 dead transitions. [2023-08-25 07:01:54,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1910 transitions, 33339 flow [2023-08-25 07:01:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-25 07:01:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-25 07:01:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4800 transitions. [2023-08-25 07:01:54,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2869097429766886 [2023-08-25 07:01:54,480 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4800 transitions. [2023-08-25 07:01:54,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4800 transitions. [2023-08-25 07:01:54,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:01:54,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4800 transitions. [2023-08-25 07:01:54,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 137.14285714285714) internal successors, (4800), 35 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:54,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 478.0) internal successors, (17208), 36 states have internal predecessors, (17208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:54,494 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 478.0) internal successors, (17208), 36 states have internal predecessors, (17208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:54,494 INFO L175 Difference]: Start difference. First operand has 383 places, 1280 transitions, 21493 flow. Second operand 35 states and 4800 transitions. [2023-08-25 07:01:54,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 1910 transitions, 33339 flow [2023-08-25 07:01:56,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 1910 transitions, 33027 flow, removed 131 selfloop flow, removed 13 redundant places. [2023-08-25 07:01:56,780 INFO L231 Difference]: Finished difference. Result has 417 places, 1655 transitions, 31512 flow [2023-08-25 07:01:56,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=21250, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=728, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=31512, PETRI_PLACES=417, PETRI_TRANSITIONS=1655} [2023-08-25 07:01:56,782 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 346 predicate places. [2023-08-25 07:01:56,782 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 1655 transitions, 31512 flow [2023-08-25 07:01:56,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 130.71052631578948) internal successors, (4967), 38 states have internal predecessors, (4967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:01:56,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:01:56,783 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:01:56,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-08-25 07:01:56,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:01:56,989 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:01:56,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:01:56,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2089171587, now seen corresponding path program 18 times [2023-08-25 07:01:56,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:01:56,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012966323] [2023-08-25 07:01:56,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:01:56,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:01:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:01:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:01:57,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:01:57,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012966323] [2023-08-25 07:01:57,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012966323] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:01:57,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141920894] [2023-08-25 07:01:57,847 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 07:01:57,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:01:57,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:01:57,848 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:01:57,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-25 07:01:59,410 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 07:01:59,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:01:59,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 64 conjunts are in the unsatisfiable core [2023-08-25 07:01:59,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:01:59,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:01:59,662 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 07:01:59,811 INFO L322 Elim1Store]: treesize reduction 9, result has 52.6 percent of original size [2023-08-25 07:01:59,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 22 [2023-08-25 07:01:59,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:01:59,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:02:00,386 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:02:00,387 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 210 treesize of output 230 [2023-08-25 07:02:00,413 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:02:00,413 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 147 treesize of output 147 [2023-08-25 07:02:00,430 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:02:00,430 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 128 treesize of output 128 [2023-08-25 07:02:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:02:01,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141920894] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:02:01,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:02:01,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 38 [2023-08-25 07:02:01,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897308667] [2023-08-25 07:02:01,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:02:01,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-25 07:02:01,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:01,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-25 07:02:01,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1378, Unknown=1, NotChecked=0, Total=1560 [2023-08-25 07:02:01,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-25 07:02:01,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 1655 transitions, 31512 flow. Second operand has 40 states, 40 states have (on average 130.6) internal successors, (5224), 40 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) [2023-08-25 07:02:01,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:01,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-25 07:02:01,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:11,564 WARN L234 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 105 DAG size of output: 96 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 07:02:30,347 WARN L234 SmtUtils]: Spent 18.64s on a formula simplification. DAG size of input: 110 DAG size of output: 84 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 07:02:41,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 07:02:48,733 INFO L124 PetriNetUnfolderBase]: 6515/13576 cut-off events. [2023-08-25 07:02:48,733 INFO L125 PetriNetUnfolderBase]: For 197579/197813 co-relation queries the response was YES. [2023-08-25 07:02:48,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102428 conditions, 13576 events. 6515/13576 cut-off events. For 197579/197813 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 122525 event pairs, 1692 based on Foata normal form. 64/13512 useless extension candidates. Maximal degree in co-relation 102286. Up to 10436 conditions per place. [2023-08-25 07:02:48,927 INFO L140 encePairwiseOnDemand]: 469/478 looper letters, 1524 selfloop transitions, 166 changer transitions 423/2118 dead transitions. [2023-08-25 07:02:48,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 2118 transitions, 42824 flow [2023-08-25 07:02:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-25 07:02:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-25 07:02:48,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4195 transitions. [2023-08-25 07:02:48,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.283101633148873 [2023-08-25 07:02:48,930 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4195 transitions. [2023-08-25 07:02:48,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4195 transitions. [2023-08-25 07:02:48,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:48,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4195 transitions. [2023-08-25 07:02:48,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 135.32258064516128) internal successors, (4195), 31 states have internal predecessors, (4195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:48,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 478.0) internal successors, (15296), 32 states have internal predecessors, (15296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:48,939 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 478.0) internal successors, (15296), 32 states have internal predecessors, (15296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:48,940 INFO L175 Difference]: Start difference. First operand has 417 places, 1655 transitions, 31512 flow. Second operand 31 states and 4195 transitions. [2023-08-25 07:02:48,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 2118 transitions, 42824 flow [2023-08-25 07:02:52,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 2118 transitions, 41901 flow, removed 426 selfloop flow, removed 14 redundant places. [2023-08-25 07:02:53,019 INFO L231 Difference]: Finished difference. Result has 439 places, 1637 transitions, 31587 flow [2023-08-25 07:02:53,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=30839, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=31587, PETRI_PLACES=439, PETRI_TRANSITIONS=1637} [2023-08-25 07:02:53,021 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 368 predicate places. [2023-08-25 07:02:53,021 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 1637 transitions, 31587 flow [2023-08-25 07:02:53,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 130.6) internal successors, (5224), 40 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) [2023-08-25 07:02:53,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:53,022 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:02:53,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-08-25 07:02:53,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-25 07:02:53,229 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:02:53,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:53,230 INFO L85 PathProgramCache]: Analyzing trace with hash -170746132, now seen corresponding path program 19 times [2023-08-25 07:02:53,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:53,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992143553] [2023-08-25 07:02:53,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:53,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 07:02:53,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:53,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992143553] [2023-08-25 07:02:53,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992143553] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:02:53,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342894133] [2023-08-25 07:02:53,354 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 07:02:53,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:02:53,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:02:53,365 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:02:53,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-25 07:02:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:53,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 07:02:53,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:02:53,749 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 07:02:53,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:02:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 07:02:53,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342894133] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:02:53,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:02:53,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-25 07:02:53,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121794404] [2023-08-25 07:02:53,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:02:53,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 07:02:53,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:53,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 07:02:53,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2023-08-25 07:02:53,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 478 [2023-08-25 07:02:53,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 1637 transitions, 31587 flow. Second operand has 21 states, 21 states have (on average 164.57142857142858) internal successors, (3456), 21 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:53,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:53,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 478 [2023-08-25 07:02:53,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:54,543 INFO L124 PetriNetUnfolderBase]: 468/1388 cut-off events. [2023-08-25 07:02:54,543 INFO L125 PetriNetUnfolderBase]: For 17970/18071 co-relation queries the response was YES. [2023-08-25 07:02:54,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9104 conditions, 1388 events. 468/1388 cut-off events. For 17970/18071 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10249 event pairs, 160 based on Foata normal form. 127/1495 useless extension candidates. Maximal degree in co-relation 8954. Up to 689 conditions per place. [2023-08-25 07:02:54,560 INFO L140 encePairwiseOnDemand]: 473/478 looper letters, 161 selfloop transitions, 12 changer transitions 69/256 dead transitions. [2023-08-25 07:02:54,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 256 transitions, 4806 flow [2023-08-25 07:02:54,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 07:02:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 07:02:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1677 transitions. [2023-08-25 07:02:54,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.350836820083682 [2023-08-25 07:02:54,561 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1677 transitions. [2023-08-25 07:02:54,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1677 transitions. [2023-08-25 07:02:54,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:54,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1677 transitions. [2023-08-25 07:02:54,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 167.7) internal successors, (1677), 10 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:54,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:54,565 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 478.0) internal successors, (5258), 11 states have internal predecessors, (5258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:54,565 INFO L175 Difference]: Start difference. First operand has 439 places, 1637 transitions, 31587 flow. Second operand 10 states and 1677 transitions. [2023-08-25 07:02:54,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 256 transitions, 4806 flow [2023-08-25 07:02:54,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 256 transitions, 3742 flow, removed 98 selfloop flow, removed 105 redundant places. [2023-08-25 07:02:54,653 INFO L231 Difference]: Finished difference. Result has 263 places, 177 transitions, 2276 flow [2023-08-25 07:02:54,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=3201, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2276, PETRI_PLACES=263, PETRI_TRANSITIONS=177} [2023-08-25 07:02:54,654 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 192 predicate places. [2023-08-25 07:02:54,654 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 177 transitions, 2276 flow [2023-08-25 07:02:54,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 164.57142857142858) internal successors, (3456), 21 states have internal predecessors, (3456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:54,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:54,655 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:02:54,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-08-25 07:02:54,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:02:54,861 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:02:54,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:54,861 INFO L85 PathProgramCache]: Analyzing trace with hash 367603478, now seen corresponding path program 20 times [2023-08-25 07:02:54,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:54,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95540273] [2023-08-25 07:02:54,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:54,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:55,001 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 07:02:55,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:55,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95540273] [2023-08-25 07:02:55,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95540273] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:02:55,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433261290] [2023-08-25 07:02:55,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:02:55,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:02:55,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:02:55,003 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:02:55,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-25 07:02:55,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:02:55,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:02:55,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-25 07:02:55,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:02:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:55,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:02:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:56,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433261290] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:02:56,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:02:56,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 29 [2023-08-25 07:02:56,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507826870] [2023-08-25 07:02:56,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:02:56,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-25 07:02:56,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:56,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-25 07:02:56,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=691, Unknown=0, NotChecked=0, Total=870 [2023-08-25 07:02:56,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 478 [2023-08-25 07:02:56,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 177 transitions, 2276 flow. Second operand has 30 states, 30 states have (on average 162.76666666666668) internal successors, (4883), 30 states have internal predecessors, (4883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:56,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:56,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 478 [2023-08-25 07:02:56,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:56,566 INFO L124 PetriNetUnfolderBase]: 523/1351 cut-off events. [2023-08-25 07:02:56,566 INFO L125 PetriNetUnfolderBase]: For 8155/8258 co-relation queries the response was YES. [2023-08-25 07:02:56,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7498 conditions, 1351 events. 523/1351 cut-off events. For 8155/8258 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9138 event pairs, 25 based on Foata normal form. 52/1392 useless extension candidates. Maximal degree in co-relation 7414. Up to 291 conditions per place. [2023-08-25 07:02:56,577 INFO L140 encePairwiseOnDemand]: 471/478 looper letters, 80 selfloop transitions, 109 changer transitions 52/254 dead transitions. [2023-08-25 07:02:56,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 254 transitions, 3449 flow [2023-08-25 07:02:56,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 07:02:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 07:02:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2830 transitions. [2023-08-25 07:02:56,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34826482894412997 [2023-08-25 07:02:56,579 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2830 transitions. [2023-08-25 07:02:56,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2830 transitions. [2023-08-25 07:02:56,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:56,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2830 transitions. [2023-08-25 07:02:56,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 166.47058823529412) internal successors, (2830), 17 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:56,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:56,584 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 478.0) internal successors, (8604), 18 states have internal predecessors, (8604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:56,584 INFO L175 Difference]: Start difference. First operand has 263 places, 177 transitions, 2276 flow. Second operand 17 states and 2830 transitions. [2023-08-25 07:02:56,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 254 transitions, 3449 flow [2023-08-25 07:02:56,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 254 transitions, 3233 flow, removed 33 selfloop flow, removed 36 redundant places. [2023-08-25 07:02:56,610 INFO L231 Difference]: Finished difference. Result has 195 places, 176 transitions, 2424 flow [2023-08-25 07:02:56,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2424, PETRI_PLACES=195, PETRI_TRANSITIONS=176} [2023-08-25 07:02:56,610 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 124 predicate places. [2023-08-25 07:02:56,610 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 176 transitions, 2424 flow [2023-08-25 07:02:56,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 162.76666666666668) internal successors, (4883), 30 states have internal predecessors, (4883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:56,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:56,611 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:02:56,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-25 07:02:56,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-08-25 07:02:56,818 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:02:56,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:56,818 INFO L85 PathProgramCache]: Analyzing trace with hash 602141512, now seen corresponding path program 21 times [2023-08-25 07:02:56,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:56,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242846236] [2023-08-25 07:02:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:56,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:02:57,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:57,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242846236] [2023-08-25 07:02:57,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242846236] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:02:57,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63431304] [2023-08-25 07:02:57,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 07:02:57,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:02:57,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:02:57,903 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:02:57,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-25 07:03:03,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 07:03:03,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:03:03,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 60 conjunts are in the unsatisfiable core [2023-08-25 07:03:03,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:03:03,702 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:03:03,703 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 7 [2023-08-25 07:03:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:03:03,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:03:04,123 INFO L322 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-08-25 07:03:04,123 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 77 treesize of output 52 [2023-08-25 07:03:04,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 07:03:04,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63431304] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:03:04,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:03:04,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 8] total 31 [2023-08-25 07:03:04,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843985135] [2023-08-25 07:03:04,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:03:04,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-25 07:03:04,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:03:04,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-25 07:03:04,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2023-08-25 07:03:04,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 478 [2023-08-25 07:03:04,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 176 transitions, 2424 flow. Second operand has 33 states, 33 states have (on average 140.75757575757575) internal successors, (4645), 33 states have internal predecessors, (4645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:04,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:03:04,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 478 [2023-08-25 07:03:04,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:03:09,092 INFO L124 PetriNetUnfolderBase]: 1219/3005 cut-off events. [2023-08-25 07:03:09,093 INFO L125 PetriNetUnfolderBase]: For 16640/16798 co-relation queries the response was YES. [2023-08-25 07:03:09,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17758 conditions, 3005 events. 1219/3005 cut-off events. For 16640/16798 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23778 event pairs, 87 based on Foata normal form. 64/3035 useless extension candidates. Maximal degree in co-relation 17683. Up to 921 conditions per place. [2023-08-25 07:03:09,119 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 283 selfloop transitions, 277 changer transitions 61/630 dead transitions. [2023-08-25 07:03:09,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 630 transitions, 9023 flow [2023-08-25 07:03:09,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-08-25 07:03:09,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-08-25 07:03:09,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 8066 transitions. [2023-08-25 07:03:09,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3013299462044232 [2023-08-25 07:03:09,124 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 8066 transitions. [2023-08-25 07:03:09,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 8066 transitions. [2023-08-25 07:03:09,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:03:09,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 8066 transitions. [2023-08-25 07:03:09,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 144.03571428571428) internal successors, (8066), 56 states have internal predecessors, (8066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:09,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 478.0) internal successors, (27246), 57 states have internal predecessors, (27246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:09,142 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 478.0) internal successors, (27246), 57 states have internal predecessors, (27246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:09,142 INFO L175 Difference]: Start difference. First operand has 195 places, 176 transitions, 2424 flow. Second operand 56 states and 8066 transitions. [2023-08-25 07:03:09,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 630 transitions, 9023 flow [2023-08-25 07:03:09,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 630 transitions, 7950 flow, removed 506 selfloop flow, removed 15 redundant places. [2023-08-25 07:03:09,227 INFO L231 Difference]: Finished difference. Result has 219 places, 442 transitions, 6759 flow [2023-08-25 07:03:09,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=6759, PETRI_PLACES=219, PETRI_TRANSITIONS=442} [2023-08-25 07:03:09,227 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 148 predicate places. [2023-08-25 07:03:09,227 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 442 transitions, 6759 flow [2023-08-25 07:03:09,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 140.75757575757575) internal successors, (4645), 33 states have internal predecessors, (4645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:09,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:03:09,228 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:03:09,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-25 07:03:09,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:09,437 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:03:09,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:03:09,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1523085244, now seen corresponding path program 22 times [2023-08-25 07:03:09,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:03:09,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498554018] [2023-08-25 07:03:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:03:09,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:03:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:03:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:03:10,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:03:10,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498554018] [2023-08-25 07:03:10,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498554018] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:03:10,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253225615] [2023-08-25 07:03:10,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 07:03:10,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:10,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:03:10,830 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:03:10,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-25 07:03:14,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 07:03:14,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:03:14,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-25 07:03:14,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:03:14,550 INFO L322 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2023-08-25 07:03:14,550 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 40 [2023-08-25 07:03:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 07:03:14,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:03:15,064 INFO L322 Elim1Store]: treesize reduction 16, result has 80.2 percent of original size [2023-08-25 07:03:15,064 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 103 treesize of output 111 [2023-08-25 07:03:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 07:03:15,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253225615] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:03:15,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:03:15,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 28 [2023-08-25 07:03:15,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279340060] [2023-08-25 07:03:15,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:03:15,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-25 07:03:15,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:03:15,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-25 07:03:15,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2023-08-25 07:03:15,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 478 [2023-08-25 07:03:15,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 442 transitions, 6759 flow. Second operand has 30 states, 30 states have (on average 140.83333333333334) internal successors, (4225), 30 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:15,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:03:15,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 478 [2023-08-25 07:03:15,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:03:18,996 INFO L124 PetriNetUnfolderBase]: 1181/2965 cut-off events. [2023-08-25 07:03:18,996 INFO L125 PetriNetUnfolderBase]: For 17397/17562 co-relation queries the response was YES. [2023-08-25 07:03:19,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17677 conditions, 2965 events. 1181/2965 cut-off events. For 17397/17562 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 23513 event pairs, 198 based on Foata normal form. 31/2961 useless extension candidates. Maximal degree in co-relation 17589. Up to 2020 conditions per place. [2023-08-25 07:03:19,025 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 378 selfloop transitions, 88 changer transitions 43/518 dead transitions. [2023-08-25 07:03:19,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 518 transitions, 8224 flow [2023-08-25 07:03:19,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-25 07:03:19,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-25 07:03:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4869 transitions. [2023-08-25 07:03:19,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2995938961358602 [2023-08-25 07:03:19,028 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4869 transitions. [2023-08-25 07:03:19,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4869 transitions. [2023-08-25 07:03:19,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:03:19,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4869 transitions. [2023-08-25 07:03:19,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 143.2058823529412) internal successors, (4869), 34 states have internal predecessors, (4869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:19,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 478.0) internal successors, (16730), 35 states have internal predecessors, (16730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:19,039 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 478.0) internal successors, (16730), 35 states have internal predecessors, (16730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:19,039 INFO L175 Difference]: Start difference. First operand has 219 places, 442 transitions, 6759 flow. Second operand 34 states and 4869 transitions. [2023-08-25 07:03:19,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 518 transitions, 8224 flow [2023-08-25 07:03:19,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 518 transitions, 7476 flow, removed 345 selfloop flow, removed 12 redundant places. [2023-08-25 07:03:19,168 INFO L231 Difference]: Finished difference. Result has 236 places, 439 transitions, 6238 flow [2023-08-25 07:03:19,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=6004, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6238, PETRI_PLACES=236, PETRI_TRANSITIONS=439} [2023-08-25 07:03:19,169 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 165 predicate places. [2023-08-25 07:03:19,169 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 439 transitions, 6238 flow [2023-08-25 07:03:19,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 140.83333333333334) internal successors, (4225), 30 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:19,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:03:19,170 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:03:19,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-08-25 07:03:19,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:19,378 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:03:19,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:03:19,379 INFO L85 PathProgramCache]: Analyzing trace with hash 927572146, now seen corresponding path program 23 times [2023-08-25 07:03:19,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:03:19,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368679281] [2023-08-25 07:03:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:03:19,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:03:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:03:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:03:20,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:03:20,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368679281] [2023-08-25 07:03:20,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368679281] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:03:20,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210127654] [2023-08-25 07:03:20,607 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 07:03:20,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:20,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:03:20,608 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:03:20,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-25 07:03:26,803 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 07:03:26,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:03:26,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-25 07:03:26,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:03:27,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:03:27,078 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2023-08-25 07:03:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 07:03:27,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:03:27,520 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse6 (* c_~q_front~0 4))) (let ((.cse2 (+ .cse6 c_~q~0.offset)) (.cse3 (+ .cse6 c_~q~0.offset 4))) (and (forall ((v_ArrVal_4394 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4394) c_~q~0.base))) (let ((.cse0 (select .cse1 .cse3))) (or (= .cse0 0) (<= c_~N~0 (+ c_~s~0 (select .cse1 .cse2) .cse0)))))) (forall ((v_ArrVal_4394 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4394) c_~q~0.base))) (let ((.cse5 (select .cse4 .cse3))) (or (< (+ c_~s~0 (select .cse4 .cse2) .cse5) (+ c_~N~0 1)) (= .cse5 0)))))))) is different from false [2023-08-25 07:03:27,676 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:03:27,676 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 201 treesize of output 168 [2023-08-25 07:03:27,684 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:03:27,684 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 103 [2023-08-25 07:03:27,690 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:03:27,690 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 83 [2023-08-25 07:03:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 07:03:27,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210127654] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:03:27,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:03:27,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 33 [2023-08-25 07:03:27,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854763] [2023-08-25 07:03:27,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:03:27,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-25 07:03:27,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:03:27,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-25 07:03:27,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1027, Unknown=1, NotChecked=64, Total=1190 [2023-08-25 07:03:27,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-25 07:03:27,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 439 transitions, 6238 flow. Second operand has 35 states, 35 states have (on average 130.82857142857142) internal successors, (4579), 35 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:27,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:03:27,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-25 07:03:27,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:03:30,495 INFO L124 PetriNetUnfolderBase]: 1585/3365 cut-off events. [2023-08-25 07:03:30,495 INFO L125 PetriNetUnfolderBase]: For 24849/24996 co-relation queries the response was YES. [2023-08-25 07:03:30,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20887 conditions, 3365 events. 1585/3365 cut-off events. For 24849/24996 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 23679 event pairs, 333 based on Foata normal form. 26/3364 useless extension candidates. Maximal degree in co-relation 20796. Up to 2875 conditions per place. [2023-08-25 07:03:30,529 INFO L140 encePairwiseOnDemand]: 466/478 looper letters, 379 selfloop transitions, 72 changer transitions 72/528 dead transitions. [2023-08-25 07:03:30,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 528 transitions, 7759 flow [2023-08-25 07:03:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 07:03:30,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 07:03:30,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3498 transitions. [2023-08-25 07:03:30,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2814612166076601 [2023-08-25 07:03:30,532 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3498 transitions. [2023-08-25 07:03:30,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3498 transitions. [2023-08-25 07:03:30,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:03:30,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3498 transitions. [2023-08-25 07:03:30,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 134.53846153846155) internal successors, (3498), 26 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:30,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 478.0) internal successors, (12906), 27 states have internal predecessors, (12906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:30,541 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 478.0) internal successors, (12906), 27 states have internal predecessors, (12906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:30,541 INFO L175 Difference]: Start difference. First operand has 236 places, 439 transitions, 6238 flow. Second operand 26 states and 3498 transitions. [2023-08-25 07:03:30,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 528 transitions, 7759 flow [2023-08-25 07:03:30,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 528 transitions, 7529 flow, removed 45 selfloop flow, removed 26 redundant places. [2023-08-25 07:03:30,682 INFO L231 Difference]: Finished difference. Result has 231 places, 436 transitions, 6128 flow [2023-08-25 07:03:30,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=6010, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6128, PETRI_PLACES=231, PETRI_TRANSITIONS=436} [2023-08-25 07:03:30,683 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 160 predicate places. [2023-08-25 07:03:30,683 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 436 transitions, 6128 flow [2023-08-25 07:03:30,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 130.82857142857142) internal successors, (4579), 35 states have internal predecessors, (4579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:30,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:03:30,684 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:03:30,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-25 07:03:30,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:30,884 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:03:30,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:03:30,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2043234272, now seen corresponding path program 24 times [2023-08-25 07:03:30,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:03:30,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125619493] [2023-08-25 07:03:30,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:03:30,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:03:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:03:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:03:32,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:03:32,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125619493] [2023-08-25 07:03:32,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125619493] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:03:32,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85761914] [2023-08-25 07:03:32,248 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 07:03:32,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:32,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:03:32,249 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:03:32,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-25 07:03:33,082 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 07:03:33,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:03:33,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-25 07:03:33,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:03:33,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:03:33,245 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 07:03:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-25 07:03:33,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:03:33,434 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* c_~q_front~0 4) c_~q~0.offset))) (and (forall ((v_ArrVal_4577 (Array Int Int))) (<= c_~N~0 (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4577) c_~q~0.base) .cse0)))) (forall ((v_ArrVal_4577 (Array Int Int))) (< (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4577) c_~q~0.base) .cse0)) (+ c_~N~0 1))))) is different from false [2023-08-25 07:03:33,486 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:03:33,486 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 86 treesize of output 70 [2023-08-25 07:03:33,490 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2023-08-25 07:03:33,493 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2023-08-25 07:03:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-25 07:03:33,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85761914] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:03:33,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:03:33,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 26 [2023-08-25 07:03:33,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005181888] [2023-08-25 07:03:33,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:03:33,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-25 07:03:33,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:03:33,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-25 07:03:33,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=618, Unknown=1, NotChecked=50, Total=756 [2023-08-25 07:03:33,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-25 07:03:33,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 436 transitions, 6128 flow. Second operand has 28 states, 28 states have (on average 131.07142857142858) internal successors, (3670), 28 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:33,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:03:33,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-25 07:03:33,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:03:35,342 INFO L124 PetriNetUnfolderBase]: 1569/3314 cut-off events. [2023-08-25 07:03:35,343 INFO L125 PetriNetUnfolderBase]: For 25848/25987 co-relation queries the response was YES. [2023-08-25 07:03:35,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20998 conditions, 3314 events. 1569/3314 cut-off events. For 25848/25987 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 23011 event pairs, 393 based on Foata normal form. 13/3302 useless extension candidates. Maximal degree in co-relation 20905. Up to 2952 conditions per place. [2023-08-25 07:03:35,376 INFO L140 encePairwiseOnDemand]: 466/478 looper letters, 407 selfloop transitions, 46 changer transitions 45/503 dead transitions. [2023-08-25 07:03:35,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 503 transitions, 7606 flow [2023-08-25 07:03:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-25 07:03:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-25 07:03:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2683 transitions. [2023-08-25 07:03:35,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28064853556485353 [2023-08-25 07:03:35,379 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2683 transitions. [2023-08-25 07:03:35,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2683 transitions. [2023-08-25 07:03:35,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:03:35,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2683 transitions. [2023-08-25 07:03:35,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 134.15) internal successors, (2683), 20 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:35,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 478.0) internal successors, (10038), 21 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:35,385 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 478.0) internal successors, (10038), 21 states have internal predecessors, (10038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:35,385 INFO L175 Difference]: Start difference. First operand has 231 places, 436 transitions, 6128 flow. Second operand 20 states and 2683 transitions. [2023-08-25 07:03:35,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 503 transitions, 7606 flow [2023-08-25 07:03:35,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 503 transitions, 7336 flow, removed 55 selfloop flow, removed 23 redundant places. [2023-08-25 07:03:35,511 INFO L231 Difference]: Finished difference. Result has 222 places, 441 transitions, 6109 flow [2023-08-25 07:03:35,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=5930, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6109, PETRI_PLACES=222, PETRI_TRANSITIONS=441} [2023-08-25 07:03:35,511 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 151 predicate places. [2023-08-25 07:03:35,511 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 441 transitions, 6109 flow [2023-08-25 07:03:35,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 131.07142857142858) internal successors, (3670), 28 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:35,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:03:35,512 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:03:35,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-25 07:03:35,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-25 07:03:35,718 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:03:35,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:03:35,719 INFO L85 PathProgramCache]: Analyzing trace with hash 190075404, now seen corresponding path program 25 times [2023-08-25 07:03:35,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:03:35,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228259171] [2023-08-25 07:03:35,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:03:35,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:03:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:03:37,083 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:03:37,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:03:37,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228259171] [2023-08-25 07:03:37,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228259171] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:03:37,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690460905] [2023-08-25 07:03:37,083 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 07:03:37,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:37,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:03:37,085 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:03:37,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-25 07:03:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:03:37,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 62 conjunts are in the unsatisfiable core [2023-08-25 07:03:37,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:03:37,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:03:37,733 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2023-08-25 07:03:38,005 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:03:38,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:03:38,467 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:03:38,467 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 201 treesize of output 168 [2023-08-25 07:03:38,507 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:03:38,507 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 103 [2023-08-25 07:03:38,516 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:03:38,517 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 83 [2023-08-25 07:03:38,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 07:03:38,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690460905] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:03:38,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:03:38,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 9] total 34 [2023-08-25 07:03:38,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685825694] [2023-08-25 07:03:38,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:03:38,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-25 07:03:38,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:03:38,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-25 07:03:38,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1154, Unknown=1, NotChecked=0, Total=1260 [2023-08-25 07:03:38,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-25 07:03:38,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 441 transitions, 6109 flow. Second operand has 36 states, 36 states have (on average 130.80555555555554) internal successors, (4709), 36 states have internal predecessors, (4709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:38,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:03:38,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-25 07:03:38,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:03:41,353 INFO L124 PetriNetUnfolderBase]: 1594/3317 cut-off events. [2023-08-25 07:03:41,353 INFO L125 PetriNetUnfolderBase]: For 25816/25956 co-relation queries the response was YES. [2023-08-25 07:03:41,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21081 conditions, 3317 events. 1594/3317 cut-off events. For 25816/25956 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 22778 event pairs, 327 based on Foata normal form. 22/3320 useless extension candidates. Maximal degree in co-relation 20991. Up to 2848 conditions per place. [2023-08-25 07:03:41,381 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 377 selfloop transitions, 84 changer transitions 59/525 dead transitions. [2023-08-25 07:03:41,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 525 transitions, 7723 flow [2023-08-25 07:03:41,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 07:03:41,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 07:03:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3490 transitions. [2023-08-25 07:03:41,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28081750885098167 [2023-08-25 07:03:41,401 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3490 transitions. [2023-08-25 07:03:41,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3490 transitions. [2023-08-25 07:03:41,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:03:41,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3490 transitions. [2023-08-25 07:03:41,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 134.23076923076923) internal successors, (3490), 26 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:41,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 478.0) internal successors, (12906), 27 states have internal predecessors, (12906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:41,410 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 478.0) internal successors, (12906), 27 states have internal predecessors, (12906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:41,410 INFO L175 Difference]: Start difference. First operand has 222 places, 441 transitions, 6109 flow. Second operand 26 states and 3490 transitions. [2023-08-25 07:03:41,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 525 transitions, 7723 flow [2023-08-25 07:03:41,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 525 transitions, 7290 flow, removed 161 selfloop flow, removed 12 redundant places. [2023-08-25 07:03:41,521 INFO L231 Difference]: Finished difference. Result has 236 places, 444 transitions, 6033 flow [2023-08-25 07:03:41,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=5784, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6033, PETRI_PLACES=236, PETRI_TRANSITIONS=444} [2023-08-25 07:03:41,521 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 165 predicate places. [2023-08-25 07:03:41,521 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 444 transitions, 6033 flow [2023-08-25 07:03:41,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 130.80555555555554) internal successors, (4709), 36 states have internal predecessors, (4709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:41,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:03:41,522 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:03:41,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-25 07:03:41,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-25 07:03:41,729 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:03:41,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:03:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1632718378, now seen corresponding path program 26 times [2023-08-25 07:03:41,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:03:41,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179500870] [2023-08-25 07:03:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:03:41,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:03:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:03:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:03:43,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:03:43,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179500870] [2023-08-25 07:03:43,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179500870] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:03:43,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18043694] [2023-08-25 07:03:43,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:03:43,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:43,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:03:43,148 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:03:43,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-25 07:03:43,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:03:43,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:03:43,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-25 07:03:43,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:03:44,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:03:44,163 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2023-08-25 07:03:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 07:03:44,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:03:44,704 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:03:44,704 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 139 treesize of output 124 [2023-08-25 07:03:44,711 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:03:44,711 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 66 [2023-08-25 07:03:44,715 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:03:44,716 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 53 [2023-08-25 07:03:44,885 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 07:03:44,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18043694] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:03:44,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:03:44,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 32 [2023-08-25 07:03:44,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344977789] [2023-08-25 07:03:44,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:03:44,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-25 07:03:44,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:03:44,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-25 07:03:44,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1024, Unknown=2, NotChecked=0, Total=1122 [2023-08-25 07:03:44,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 478 [2023-08-25 07:03:44,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 444 transitions, 6033 flow. Second operand has 34 states, 34 states have (on average 130.85294117647058) internal successors, (4449), 34 states have internal predecessors, (4449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:44,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:03:44,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 478 [2023-08-25 07:03:44,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:03:51,906 INFO L124 PetriNetUnfolderBase]: 1640/3439 cut-off events. [2023-08-25 07:03:51,906 INFO L125 PetriNetUnfolderBase]: For 23800/23871 co-relation queries the response was YES. [2023-08-25 07:03:51,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20623 conditions, 3439 events. 1640/3439 cut-off events. For 23800/23871 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 23980 event pairs, 346 based on Foata normal form. 29/3449 useless extension candidates. Maximal degree in co-relation 20530. Up to 2861 conditions per place. [2023-08-25 07:03:51,941 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 397 selfloop transitions, 114 changer transitions 47/563 dead transitions. [2023-08-25 07:03:51,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 563 transitions, 8100 flow [2023-08-25 07:03:51,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-25 07:03:51,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-25 07:03:51,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4416 transitions. [2023-08-25 07:03:51,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2799543552681628 [2023-08-25 07:03:51,945 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 4416 transitions. [2023-08-25 07:03:51,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 4416 transitions. [2023-08-25 07:03:51,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:03:51,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 4416 transitions. [2023-08-25 07:03:51,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 133.8181818181818) internal successors, (4416), 33 states have internal predecessors, (4416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:51,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 478.0) internal successors, (16252), 34 states have internal predecessors, (16252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:51,955 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 478.0) internal successors, (16252), 34 states have internal predecessors, (16252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:51,955 INFO L175 Difference]: Start difference. First operand has 236 places, 444 transitions, 6033 flow. Second operand 33 states and 4416 transitions. [2023-08-25 07:03:51,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 563 transitions, 8100 flow [2023-08-25 07:03:52,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 563 transitions, 7888 flow, removed 41 selfloop flow, removed 22 redundant places. [2023-08-25 07:03:52,100 INFO L231 Difference]: Finished difference. Result has 249 places, 471 transitions, 6578 flow [2023-08-25 07:03:52,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=5879, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6578, PETRI_PLACES=249, PETRI_TRANSITIONS=471} [2023-08-25 07:03:52,100 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 178 predicate places. [2023-08-25 07:03:52,101 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 471 transitions, 6578 flow [2023-08-25 07:03:52,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 130.85294117647058) internal successors, (4449), 34 states have internal predecessors, (4449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:52,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:03:52,101 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:03:52,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-25 07:03:52,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:52,308 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:03:52,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:03:52,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1351074583, now seen corresponding path program 27 times [2023-08-25 07:03:52,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:03:52,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918334807] [2023-08-25 07:03:52,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:03:52,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:03:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:03:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:03:52,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:03:52,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918334807] [2023-08-25 07:03:52,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918334807] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:03:52,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30480858] [2023-08-25 07:03:52,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 07:03:52,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:52,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:03:52,823 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:03:52,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-25 07:04:00,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 07:04:00,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:04:00,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-25 07:04:00,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:04:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:04:01,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:04:01,176 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-25 07:04:01,176 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 26 treesize of output 14 [2023-08-25 07:04:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:04:01,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30480858] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:04:01,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:04:01,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2023-08-25 07:04:01,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558044679] [2023-08-25 07:04:01,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:04:01,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-25 07:04:01,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:04:01,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-25 07:04:01,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1201, Unknown=0, NotChecked=0, Total=1406 [2023-08-25 07:04:01,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 478 [2023-08-25 07:04:01,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 471 transitions, 6578 flow. Second operand has 38 states, 38 states have (on average 152.5) internal successors, (5795), 38 states have internal predecessors, (5795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:01,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:04:01,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 478 [2023-08-25 07:04:01,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:04:14,359 INFO L124 PetriNetUnfolderBase]: 2579/5958 cut-off events. [2023-08-25 07:04:14,359 INFO L125 PetriNetUnfolderBase]: For 35423/35750 co-relation queries the response was YES. [2023-08-25 07:04:14,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34375 conditions, 5958 events. 2579/5958 cut-off events. For 35423/35750 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 51567 event pairs, 183 based on Foata normal form. 328/6257 useless extension candidates. Maximal degree in co-relation 34279. Up to 1952 conditions per place. [2023-08-25 07:04:14,416 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 392 selfloop transitions, 741 changer transitions 18/1166 dead transitions. [2023-08-25 07:04:14,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1166 transitions, 16995 flow [2023-08-25 07:04:14,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-25 07:04:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-25 07:04:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 7394 transitions. [2023-08-25 07:04:14,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32911955844387075 [2023-08-25 07:04:14,421 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 7394 transitions. [2023-08-25 07:04:14,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 7394 transitions. [2023-08-25 07:04:14,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:04:14,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 7394 transitions. [2023-08-25 07:04:14,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 157.31914893617022) internal successors, (7394), 47 states have internal predecessors, (7394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:14,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 478.0) internal successors, (22944), 48 states have internal predecessors, (22944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:14,435 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 478.0) internal successors, (22944), 48 states have internal predecessors, (22944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:14,435 INFO L175 Difference]: Start difference. First operand has 249 places, 471 transitions, 6578 flow. Second operand 47 states and 7394 transitions. [2023-08-25 07:04:14,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 1166 transitions, 16995 flow [2023-08-25 07:04:14,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 1166 transitions, 16688 flow, removed 101 selfloop flow, removed 19 redundant places. [2023-08-25 07:04:14,713 INFO L231 Difference]: Finished difference. Result has 281 places, 995 transitions, 15988 flow [2023-08-25 07:04:14,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=6393, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=15988, PETRI_PLACES=281, PETRI_TRANSITIONS=995} [2023-08-25 07:04:14,713 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 210 predicate places. [2023-08-25 07:04:14,714 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 995 transitions, 15988 flow [2023-08-25 07:04:14,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 152.5) internal successors, (5795), 38 states have internal predecessors, (5795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:14,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:04:14,714 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:04:14,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-25 07:04:14,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-25 07:04:14,925 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:04:14,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:04:14,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1599893055, now seen corresponding path program 28 times [2023-08-25 07:04:14,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:04:14,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584532234] [2023-08-25 07:04:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:04:14,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:04:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:04:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:04:15,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:04:15,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584532234] [2023-08-25 07:04:15,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584532234] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:04:15,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420727421] [2023-08-25 07:04:15,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 07:04:15,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:04:15,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:04:15,436 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:04:15,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-25 07:04:17,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 07:04:17,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:04:17,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-25 07:04:17,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:04:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 07:04:17,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:04:17,741 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 07:04:17,741 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-08-25 07:04:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 07:04:17,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420727421] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:04:17,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:04:17,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 22 [2023-08-25 07:04:17,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927506217] [2023-08-25 07:04:17,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:04:17,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 07:04:17,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:04:17,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 07:04:17,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2023-08-25 07:04:17,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 478 [2023-08-25 07:04:17,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 995 transitions, 15988 flow. Second operand has 23 states, 23 states have (on average 152.69565217391303) internal successors, (3512), 23 states have internal predecessors, (3512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:17,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:04:17,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 478 [2023-08-25 07:04:17,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:04:24,659 INFO L124 PetriNetUnfolderBase]: 3970/9317 cut-off events. [2023-08-25 07:04:24,659 INFO L125 PetriNetUnfolderBase]: For 66209/66942 co-relation queries the response was YES. [2023-08-25 07:04:24,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60544 conditions, 9317 events. 3970/9317 cut-off events. For 66209/66942 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 86636 event pairs, 249 based on Foata normal form. 985/10269 useless extension candidates. Maximal degree in co-relation 60442. Up to 3452 conditions per place. [2023-08-25 07:04:24,755 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 550 selfloop transitions, 1165 changer transitions 183/1913 dead transitions. [2023-08-25 07:04:24,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 1913 transitions, 33262 flow [2023-08-25 07:04:24,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-08-25 07:04:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-08-25 07:04:24,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 10810 transitions. [2023-08-25 07:04:24,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3277545327754533 [2023-08-25 07:04:24,761 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 10810 transitions. [2023-08-25 07:04:24,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 10810 transitions. [2023-08-25 07:04:24,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:04:24,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 10810 transitions. [2023-08-25 07:04:24,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 156.66666666666666) internal successors, (10810), 69 states have internal predecessors, (10810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:24,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 478.0) internal successors, (33460), 70 states have internal predecessors, (33460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:24,782 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 478.0) internal successors, (33460), 70 states have internal predecessors, (33460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:24,782 INFO L175 Difference]: Start difference. First operand has 281 places, 995 transitions, 15988 flow. Second operand 69 states and 10810 transitions. [2023-08-25 07:04:24,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 1913 transitions, 33262 flow [2023-08-25 07:04:25,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 1913 transitions, 28934 flow, removed 2143 selfloop flow, removed 8 redundant places. [2023-08-25 07:04:25,940 INFO L231 Difference]: Finished difference. Result has 367 places, 1460 transitions, 25078 flow [2023-08-25 07:04:25,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=12457, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=880, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=626, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=25078, PETRI_PLACES=367, PETRI_TRANSITIONS=1460} [2023-08-25 07:04:25,941 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 296 predicate places. [2023-08-25 07:04:25,941 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 1460 transitions, 25078 flow [2023-08-25 07:04:25,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 152.69565217391303) internal successors, (3512), 23 states have internal predecessors, (3512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:25,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:04:25,942 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:04:25,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-25 07:04:26,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-25 07:04:26,150 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:04:26,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:04:26,151 INFO L85 PathProgramCache]: Analyzing trace with hash 871177497, now seen corresponding path program 29 times [2023-08-25 07:04:26,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:04:26,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325019127] [2023-08-25 07:04:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:04:26,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:04:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:04:26,596 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:04:26,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:04:26,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325019127] [2023-08-25 07:04:26,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325019127] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:04:26,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472524460] [2023-08-25 07:04:26,596 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 07:04:26,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:04:26,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:04:26,597 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:04:26,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-25 07:04:28,619 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 07:04:28,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:04:28,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-25 07:04:28,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:04:29,023 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:04:29,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:04:29,211 INFO L322 Elim1Store]: treesize reduction 10, result has 47.4 percent of original size [2023-08-25 07:04:29,211 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 21 [2023-08-25 07:04:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:04:29,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472524460] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:04:29,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:04:29,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2023-08-25 07:04:29,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391372614] [2023-08-25 07:04:29,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:04:29,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-25 07:04:29,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:04:29,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-25 07:04:29,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1144, Unknown=0, NotChecked=0, Total=1406 [2023-08-25 07:04:29,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 478 [2023-08-25 07:04:29,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 1460 transitions, 25078 flow. Second operand has 38 states, 38 states have (on average 152.5) internal successors, (5795), 38 states have internal predecessors, (5795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:29,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:04:29,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 478 [2023-08-25 07:04:29,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:04:35,497 INFO L124 PetriNetUnfolderBase]: 4249/9944 cut-off events. [2023-08-25 07:04:35,497 INFO L125 PetriNetUnfolderBase]: For 63301/64007 co-relation queries the response was YES. [2023-08-25 07:04:35,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64601 conditions, 9944 events. 4249/9944 cut-off events. For 63301/64007 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 94510 event pairs, 280 based on Foata normal form. 365/10269 useless extension candidates. Maximal degree in co-relation 64467. Up to 3352 conditions per place. [2023-08-25 07:04:35,615 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 638 selfloop transitions, 1207 changer transitions 8/1868 dead transitions. [2023-08-25 07:04:35,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 1868 transitions, 34065 flow [2023-08-25 07:04:35,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-25 07:04:35,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-25 07:04:35,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5330 transitions. [2023-08-25 07:04:35,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32795963573714004 [2023-08-25 07:04:35,619 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5330 transitions. [2023-08-25 07:04:35,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5330 transitions. [2023-08-25 07:04:35,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:04:35,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5330 transitions. [2023-08-25 07:04:35,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 156.76470588235293) internal successors, (5330), 34 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:35,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 478.0) internal successors, (16730), 35 states have internal predecessors, (16730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:35,629 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 478.0) internal successors, (16730), 35 states have internal predecessors, (16730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:35,629 INFO L175 Difference]: Start difference. First operand has 367 places, 1460 transitions, 25078 flow. Second operand 34 states and 5330 transitions. [2023-08-25 07:04:35,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 1868 transitions, 34065 flow [2023-08-25 07:04:36,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 1868 transitions, 30653 flow, removed 1342 selfloop flow, removed 14 redundant places. [2023-08-25 07:04:36,900 INFO L231 Difference]: Finished difference. Result has 380 places, 1681 transitions, 28336 flow [2023-08-25 07:04:36,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=22054, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=980, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=28336, PETRI_PLACES=380, PETRI_TRANSITIONS=1681} [2023-08-25 07:04:36,902 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 309 predicate places. [2023-08-25 07:04:36,902 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 1681 transitions, 28336 flow [2023-08-25 07:04:36,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 152.5) internal successors, (5795), 38 states have internal predecessors, (5795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:36,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:04:36,903 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:04:36,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-25 07:04:37,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-25 07:04:37,113 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:04:37,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:04:37,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2045169906, now seen corresponding path program 30 times [2023-08-25 07:04:37,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:04:37,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846303259] [2023-08-25 07:04:37,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:04:37,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:04:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:04:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:04:38,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:04:38,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846303259] [2023-08-25 07:04:38,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846303259] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:04:38,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300742184] [2023-08-25 07:04:38,216 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 07:04:38,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:04:38,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:04:38,217 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:04:38,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-25 07:04:41,778 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 07:04:41,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:04:41,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 83 conjunts are in the unsatisfiable core [2023-08-25 07:04:41,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:04:42,282 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:04:42,282 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 10 [2023-08-25 07:04:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:04:42,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:04:42,922 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:04:42,923 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 133 treesize of output 122 [2023-08-25 07:04:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:04:43,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300742184] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:04:43,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:04:43,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 44 [2023-08-25 07:04:43,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686399319] [2023-08-25 07:04:43,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:04:43,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-08-25 07:04:43,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:04:43,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-08-25 07:04:43,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1805, Unknown=0, NotChecked=0, Total=2070 [2023-08-25 07:04:43,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 478 [2023-08-25 07:04:43,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 1681 transitions, 28336 flow. Second operand has 46 states, 46 states have (on average 140.45652173913044) internal successors, (6461), 46 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:43,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:04:43,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 478 [2023-08-25 07:04:43,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:04:58,914 INFO L124 PetriNetUnfolderBase]: 5427/12911 cut-off events. [2023-08-25 07:04:58,914 INFO L125 PetriNetUnfolderBase]: For 76479/76823 co-relation queries the response was YES. [2023-08-25 07:04:59,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81130 conditions, 12911 events. 5427/12911 cut-off events. For 76479/76823 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 130097 event pairs, 552 based on Foata normal form. 275/13144 useless extension candidates. Maximal degree in co-relation 80998. Up to 7860 conditions per place. [2023-08-25 07:04:59,115 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 1734 selfloop transitions, 673 changer transitions 50/2466 dead transitions. [2023-08-25 07:04:59,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 2466 transitions, 43582 flow [2023-08-25 07:04:59,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-08-25 07:04:59,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2023-08-25 07:04:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 11200 transitions. [2023-08-25 07:04:59,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3003969531166184 [2023-08-25 07:04:59,126 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 11200 transitions. [2023-08-25 07:04:59,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 11200 transitions. [2023-08-25 07:04:59,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:04:59,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 11200 transitions. [2023-08-25 07:04:59,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 143.5897435897436) internal successors, (11200), 78 states have internal predecessors, (11200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:59,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 478.0) internal successors, (37762), 79 states have internal predecessors, (37762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:59,162 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 478.0) internal successors, (37762), 79 states have internal predecessors, (37762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:59,162 INFO L175 Difference]: Start difference. First operand has 380 places, 1681 transitions, 28336 flow. Second operand 78 states and 11200 transitions. [2023-08-25 07:04:59,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 2466 transitions, 43582 flow [2023-08-25 07:05:01,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 2466 transitions, 43043 flow, removed 223 selfloop flow, removed 10 redundant places. [2023-08-25 07:05:01,347 INFO L231 Difference]: Finished difference. Result has 482 places, 2203 transitions, 39082 flow [2023-08-25 07:05:01,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=27592, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=39082, PETRI_PLACES=482, PETRI_TRANSITIONS=2203} [2023-08-25 07:05:01,349 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 411 predicate places. [2023-08-25 07:05:01,349 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 2203 transitions, 39082 flow [2023-08-25 07:05:01,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 140.45652173913044) internal successors, (6461), 46 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:05:01,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:05:01,350 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:05:01,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-08-25 07:05:01,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:05:01,561 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:05:01,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:05:01,561 INFO L85 PathProgramCache]: Analyzing trace with hash 124420736, now seen corresponding path program 31 times [2023-08-25 07:05:01,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:05:01,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081223242] [2023-08-25 07:05:01,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:05:01,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:05:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:05:02,698 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:05:02,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:05:02,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081223242] [2023-08-25 07:05:02,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081223242] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:05:02,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380333199] [2023-08-25 07:05:02,699 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 07:05:02,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:05:02,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:05:02,700 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:05:02,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-25 07:05:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:05:03,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 97 conjunts are in the unsatisfiable core [2023-08-25 07:05:03,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:05:03,232 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-25 07:05:03,267 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 07:05:03,325 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-25 07:05:03,357 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 07:05:03,400 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 07:05:03,437 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 07:05:03,932 INFO L322 Elim1Store]: treesize reduction 26, result has 10.3 percent of original size [2023-08-25 07:05:03,933 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 18 [2023-08-25 07:05:04,022 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:05:04,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:05:14,093 INFO L322 Elim1Store]: treesize reduction 80, result has 47.7 percent of original size [2023-08-25 07:05:14,094 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 317 treesize of output 179 [2023-08-25 07:05:14,353 INFO L322 Elim1Store]: treesize reduction 18, result has 91.5 percent of original size [2023-08-25 07:05:14,353 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 815 treesize of output 890 [2023-08-25 07:05:14,384 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 07:05:14,389 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 07:05:14,430 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:05:14,430 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 245 treesize of output 290 [2023-08-25 07:05:14,553 INFO L322 Elim1Store]: treesize reduction 18, result has 82.5 percent of original size [2023-08-25 07:05:14,553 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 245 treesize of output 251 [2023-08-25 07:05:35,454 INFO L322 Elim1Store]: treesize reduction 80, result has 47.7 percent of original size [2023-08-25 07:05:35,454 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 317 treesize of output 179 [2023-08-25 07:05:35,587 INFO L322 Elim1Store]: treesize reduction 146, result has 31.5 percent of original size [2023-08-25 07:05:35,588 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 411 treesize of output 409 [2023-08-25 07:05:35,641 INFO L322 Elim1Store]: treesize reduction 90, result has 12.6 percent of original size [2023-08-25 07:05:35,641 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 313 treesize of output 247 [2023-08-25 07:05:35,691 INFO L322 Elim1Store]: treesize reduction 90, result has 12.6 percent of original size [2023-08-25 07:05:35,691 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 179 [2023-08-25 07:05:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:05:36,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380333199] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:05:36,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:05:36,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 44 [2023-08-25 07:05:36,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807058790] [2023-08-25 07:05:36,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:05:36,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-08-25 07:05:36,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:05:36,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-08-25 07:05:36,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1803, Unknown=7, NotChecked=0, Total=2070 [2023-08-25 07:05:36,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 478 [2023-08-25 07:05:36,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 2203 transitions, 39082 flow. Second operand has 46 states, 46 states have (on average 121.8913043478261) internal successors, (5607), 46 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:05:36,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:05:36,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 478 [2023-08-25 07:05:36,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:05:39,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 07:06:07,502 INFO L124 PetriNetUnfolderBase]: 22704/39837 cut-off events. [2023-08-25 07:06:07,502 INFO L125 PetriNetUnfolderBase]: For 309880/309880 co-relation queries the response was YES. [2023-08-25 07:06:08,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283725 conditions, 39837 events. 22704/39837 cut-off events. For 309880/309880 co-relation queries the response was YES. Maximal size of possible extension queue 1367. Compared 341169 event pairs, 2540 based on Foata normal form. 429/40174 useless extension candidates. Maximal degree in co-relation 283558. Up to 15979 conditions per place. [2023-08-25 07:06:08,549 INFO L140 encePairwiseOnDemand]: 468/478 looper letters, 1822 selfloop transitions, 1117 changer transitions 86/3026 dead transitions. [2023-08-25 07:06:08,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 3026 transitions, 56190 flow [2023-08-25 07:06:08,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-25 07:06:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-25 07:06:08,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 4808 transitions. [2023-08-25 07:06:08,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27185344340156053 [2023-08-25 07:06:08,553 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 4808 transitions. [2023-08-25 07:06:08,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 4808 transitions. [2023-08-25 07:06:08,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:06:08,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 4808 transitions. [2023-08-25 07:06:08,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 129.94594594594594) internal successors, (4808), 37 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:06:08,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 478.0) internal successors, (18164), 38 states have internal predecessors, (18164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:06:08,564 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 478.0) internal successors, (18164), 38 states have internal predecessors, (18164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:06:08,564 INFO L175 Difference]: Start difference. First operand has 482 places, 2203 transitions, 39082 flow. Second operand 37 states and 4808 transitions. [2023-08-25 07:06:08,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 3026 transitions, 56190 flow [2023-08-25 07:06:25,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 3026 transitions, 54821 flow, removed 643 selfloop flow, removed 17 redundant places. [2023-08-25 07:06:25,124 INFO L231 Difference]: Finished difference. Result has 512 places, 2510 transitions, 48375 flow [2023-08-25 07:06:25,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=37607, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=819, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=48375, PETRI_PLACES=512, PETRI_TRANSITIONS=2510} [2023-08-25 07:06:25,126 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 441 predicate places. [2023-08-25 07:06:25,126 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 2510 transitions, 48375 flow [2023-08-25 07:06:25,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 121.8913043478261) internal successors, (5607), 46 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:06:25,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:06:25,127 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:06:25,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-08-25 07:06:25,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:06:25,333 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:06:25,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:06:25,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1221372931, now seen corresponding path program 32 times [2023-08-25 07:06:25,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:06:25,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635322625] [2023-08-25 07:06:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:06:25,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:06:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:06:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:06:25,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:06:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635322625] [2023-08-25 07:06:25,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635322625] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:06:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794799019] [2023-08-25 07:06:25,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:06:25,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:06:25,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:06:25,816 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:06:25,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-25 07:06:26,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:06:26,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:06:26,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-25 07:06:26,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:06:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:06:26,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:06:26,704 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-25 07:06:26,704 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 26 treesize of output 14 [2023-08-25 07:06:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:06:27,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794799019] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:06:27,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:06:27,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2023-08-25 07:06:27,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135598305] [2023-08-25 07:06:27,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:06:27,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-25 07:06:27,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:06:27,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-25 07:06:27,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1183, Unknown=0, NotChecked=0, Total=1406 [2023-08-25 07:06:27,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 478 [2023-08-25 07:06:27,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 2510 transitions, 48375 flow. Second operand has 38 states, 38 states have (on average 152.44736842105263) internal successors, (5793), 38 states have internal predecessors, (5793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:06:27,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:06:27,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 478 [2023-08-25 07:06:27,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:06:44,448 INFO L124 PetriNetUnfolderBase]: 9399/21800 cut-off events. [2023-08-25 07:06:44,449 INFO L125 PetriNetUnfolderBase]: For 199225/199851 co-relation queries the response was YES. [2023-08-25 07:06:44,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152256 conditions, 21800 events. 9399/21800 cut-off events. For 199225/199851 co-relation queries the response was YES. Maximal size of possible extension queue 1361. Compared 235804 event pairs, 448 based on Foata normal form. 884/22659 useless extension candidates. Maximal degree in co-relation 152072. Up to 6587 conditions per place. [2023-08-25 07:06:44,800 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 1178 selfloop transitions, 2729 changer transitions 38/3960 dead transitions. [2023-08-25 07:06:44,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 3960 transitions, 82083 flow [2023-08-25 07:06:44,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-08-25 07:06:44,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-08-25 07:06:44,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 11266 transitions. [2023-08-25 07:06:44,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3273477452347745 [2023-08-25 07:06:44,807 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 11266 transitions. [2023-08-25 07:06:44,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 11266 transitions. [2023-08-25 07:06:44,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:06:44,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 11266 transitions. [2023-08-25 07:06:44,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 156.47222222222223) internal successors, (11266), 72 states have internal predecessors, (11266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:06:44,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 478.0) internal successors, (34894), 73 states have internal predecessors, (34894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:06:44,829 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 478.0) internal successors, (34894), 73 states have internal predecessors, (34894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:06:44,829 INFO L175 Difference]: Start difference. First operand has 512 places, 2510 transitions, 48375 flow. Second operand 72 states and 11266 transitions. [2023-08-25 07:06:44,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 3960 transitions, 82083 flow [2023-08-25 07:06:51,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 3960 transitions, 81308 flow, removed 337 selfloop flow, removed 21 redundant places. [2023-08-25 07:06:51,640 INFO L231 Difference]: Finished difference. Result has 573 places, 3563 transitions, 78215 flow [2023-08-25 07:06:51,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=45186, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1613, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=78215, PETRI_PLACES=573, PETRI_TRANSITIONS=3563} [2023-08-25 07:06:51,641 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 502 predicate places. [2023-08-25 07:06:51,641 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 3563 transitions, 78215 flow [2023-08-25 07:06:51,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 152.44736842105263) internal successors, (5793), 38 states have internal predecessors, (5793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:06:51,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:06:51,642 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:06:51,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-25 07:06:51,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-08-25 07:06:51,849 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:06:51,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:06:51,850 INFO L85 PathProgramCache]: Analyzing trace with hash -381017349, now seen corresponding path program 33 times [2023-08-25 07:06:51,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:06:51,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996082227] [2023-08-25 07:06:51,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:06:51,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:06:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:06:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:06:52,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:06:52,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996082227] [2023-08-25 07:06:52,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996082227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:06:52,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423739501] [2023-08-25 07:06:52,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 07:06:52,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:06:52,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:06:52,335 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:06:52,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-25 07:06:55,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 07:06:55,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:06:55,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-25 07:06:55,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:06:55,459 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-25 07:06:55,482 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 07:06:55,515 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 07:06:55,543 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 07:06:55,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-25 07:06:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:06:55,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:07:00,676 INFO L322 Elim1Store]: treesize reduction 35, result has 58.8 percent of original size [2023-08-25 07:07:00,677 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 138 treesize of output 106 [2023-08-25 07:07:00,740 INFO L322 Elim1Store]: treesize reduction 10, result has 86.3 percent of original size [2023-08-25 07:07:00,740 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 516 treesize of output 509 [2023-08-25 07:07:00,759 INFO L322 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-08-25 07:07:00,760 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 199 treesize of output 179 [2023-08-25 07:07:00,776 INFO L322 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-08-25 07:07:00,776 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 179 treesize of output 139 [2023-08-25 07:07:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:07:01,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423739501] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:07:01,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:07:01,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2023-08-25 07:07:01,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826626957] [2023-08-25 07:07:01,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:07:01,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-25 07:07:01,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:07:01,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-25 07:07:01,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1186, Unknown=14, NotChecked=0, Total=1406 [2023-08-25 07:07:01,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 478 [2023-08-25 07:07:01,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 3563 transitions, 78215 flow. Second operand has 38 states, 38 states have (on average 133.97368421052633) internal successors, (5091), 38 states have internal predecessors, (5091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:07:01,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:07:01,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 478 [2023-08-25 07:07:01,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:07:58,953 INFO L124 PetriNetUnfolderBase]: 33558/57887 cut-off events. [2023-08-25 07:07:58,953 INFO L125 PetriNetUnfolderBase]: For 731554/731565 co-relation queries the response was YES. [2023-08-25 07:08:01,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481875 conditions, 57887 events. 33558/57887 cut-off events. For 731554/731565 co-relation queries the response was YES. Maximal size of possible extension queue 2007. Compared 509592 event pairs, 2580 based on Foata normal form. 144/58015 useless extension candidates. Maximal degree in co-relation 481683. Up to 20992 conditions per place. [2023-08-25 07:08:02,112 INFO L140 encePairwiseOnDemand]: 471/478 looper letters, 1342 selfloop transitions, 2559 changer transitions 17/3925 dead transitions. [2023-08-25 07:08:02,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 3925 transitions, 91545 flow [2023-08-25 07:08:02,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 07:08:02,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 07:08:02,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4066 transitions. [2023-08-25 07:08:02,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29331986726302123 [2023-08-25 07:08:02,115 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4066 transitions. [2023-08-25 07:08:02,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4066 transitions. [2023-08-25 07:08:02,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:08:02,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4066 transitions. [2023-08-25 07:08:02,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 140.20689655172413) internal successors, (4066), 29 states have internal predecessors, (4066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:08:02,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 478.0) internal successors, (14340), 30 states have internal predecessors, (14340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:08:02,125 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 478.0) internal successors, (14340), 30 states have internal predecessors, (14340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:08:02,125 INFO L175 Difference]: Start difference. First operand has 573 places, 3563 transitions, 78215 flow. Second operand 29 states and 4066 transitions. [2023-08-25 07:08:02,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 3925 transitions, 91545 flow [2023-08-25 07:09:04,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 3925 transitions, 85968 flow, removed 2692 selfloop flow, removed 27 redundant places. [2023-08-25 07:09:04,863 INFO L231 Difference]: Finished difference. Result has 578 places, 3716 transitions, 84212 flow [2023-08-25 07:09:04,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=72788, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2401, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=84212, PETRI_PLACES=578, PETRI_TRANSITIONS=3716} [2023-08-25 07:09:04,866 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 507 predicate places. [2023-08-25 07:09:04,866 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 3716 transitions, 84212 flow [2023-08-25 07:09:04,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 133.97368421052633) internal successors, (5091), 38 states have internal predecessors, (5091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:09:04,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:09:04,867 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:09:04,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-25 07:09:05,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-08-25 07:09:05,077 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:09:05,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:09:05,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1132820667, now seen corresponding path program 34 times [2023-08-25 07:09:05,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:09:05,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106562625] [2023-08-25 07:09:05,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:09:05,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:09:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:09:05,567 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:09:05,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:09:05,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106562625] [2023-08-25 07:09:05,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106562625] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:09:05,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694158725] [2023-08-25 07:09:05,568 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 07:09:05,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:09:05,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:09:05,569 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:09:05,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-25 07:09:08,912 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 07:09:08,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:09:08,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-25 07:09:08,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:09:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-25 07:09:09,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:09:09,045 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-25 07:09:09,045 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 26 treesize of output 14 [2023-08-25 07:09:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-25 07:09:09,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694158725] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:09:09,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:09:09,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2023-08-25 07:09:09,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089456652] [2023-08-25 07:09:09,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:09:09,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 07:09:09,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:09:09,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 07:09:09,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2023-08-25 07:09:09,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 478 [2023-08-25 07:09:09,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 3716 transitions, 84212 flow. Second operand has 21 states, 21 states have (on average 152.85714285714286) internal successors, (3210), 21 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:09:09,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:09:09,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 478 [2023-08-25 07:09:09,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:09:37,850 INFO L124 PetriNetUnfolderBase]: 13731/30424 cut-off events. [2023-08-25 07:09:37,851 INFO L125 PetriNetUnfolderBase]: For 345603/347107 co-relation queries the response was YES. [2023-08-25 07:09:39,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244229 conditions, 30424 events. 13731/30424 cut-off events. For 345603/347107 co-relation queries the response was YES. Maximal size of possible extension queue 1812. Compared 333974 event pairs, 739 based on Foata normal form. 626/30990 useless extension candidates. Maximal degree in co-relation 244040. Up to 9440 conditions per place. [2023-08-25 07:09:39,527 INFO L140 encePairwiseOnDemand]: 470/478 looper letters, 1751 selfloop transitions, 3716 changer transitions 5/5487 dead transitions. [2023-08-25 07:09:39,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 5487 transitions, 133705 flow [2023-08-25 07:09:39,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-25 07:09:39,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-25 07:09:39,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 7523 transitions. [2023-08-25 07:09:39,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3278852859135286 [2023-08-25 07:09:39,532 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 7523 transitions. [2023-08-25 07:09:39,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 7523 transitions. [2023-08-25 07:09:39,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:09:39,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 7523 transitions. [2023-08-25 07:09:39,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 156.72916666666666) internal successors, (7523), 48 states have internal predecessors, (7523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:09:39,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 478.0) internal successors, (23422), 49 states have internal predecessors, (23422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:09:39,549 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 478.0) internal successors, (23422), 49 states have internal predecessors, (23422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:09:39,549 INFO L175 Difference]: Start difference. First operand has 578 places, 3716 transitions, 84212 flow. Second operand 48 states and 7523 transitions. [2023-08-25 07:09:39,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 5487 transitions, 133705 flow [2023-08-25 07:09:59,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 5487 transitions, 130505 flow, removed 1317 selfloop flow, removed 19 redundant places. [2023-08-25 07:09:59,508 INFO L231 Difference]: Finished difference. Result has 613 places, 5074 transitions, 126387 flow [2023-08-25 07:09:59,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=81280, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2385, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=883, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=126387, PETRI_PLACES=613, PETRI_TRANSITIONS=5074} [2023-08-25 07:09:59,510 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 542 predicate places. [2023-08-25 07:09:59,510 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 5074 transitions, 126387 flow [2023-08-25 07:09:59,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 152.85714285714286) internal successors, (3210), 21 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:09:59,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:09:59,511 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:09:59,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-08-25 07:09:59,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-08-25 07:09:59,720 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 70 more)] === [2023-08-25 07:09:59,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:09:59,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1067014411, now seen corresponding path program 35 times [2023-08-25 07:09:59,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:09:59,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375714243] [2023-08-25 07:09:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:09:59,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:09:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:10:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:10:00,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:10:00,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375714243] [2023-08-25 07:10:00,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375714243] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:10:00,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584542798] [2023-08-25 07:10:00,280 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 07:10:00,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:10:00,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:10:00,281 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:10:00,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process Received shutdown request... [2023-08-25 07:10:00,384 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 07:10:00,392 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 07:10:01,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-25 07:10:01,584 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forcibly destroying the process [2023-08-25 07:10:01,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 137 [2023-08-25 07:10:01,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-25 07:10:01,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-25 07:10:01,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-08-25 07:10:01,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334529689] [2023-08-25 07:10:01,589 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-25 07:10:01,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 07:10:01,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:10:01,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 07:10:01,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-08-25 07:10:01,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 478 [2023-08-25 07:10:01,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 5074 transitions, 126387 flow. Second operand has 14 states, 14 states have (on average 142.78571428571428) internal successors, (1999), 14 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:10:01,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:10:01,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 478 [2023-08-25 07:10:01,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:10:01,599 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONASSERT (73 of 74 remaining) [2023-08-25 07:10:01,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-25 07:10:01,600 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-25 07:10:01,601 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (72 of 74 remaining) [2023-08-25 07:10:01,601 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONDATA_RACE (71 of 74 remaining) [2023-08-25 07:10:01,601 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err10ASSERT_VIOLATIONDATA_RACE (70 of 74 remaining) [2023-08-25 07:10:01,601 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err11ASSERT_VIOLATIONDATA_RACE (69 of 74 remaining) [2023-08-25 07:10:01,601 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err12ASSERT_VIOLATIONDATA_RACE (68 of 74 remaining) [2023-08-25 07:10:01,601 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err13ASSERT_VIOLATIONDATA_RACE (67 of 74 remaining) [2023-08-25 07:10:01,601 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err14ASSERT_VIOLATIONDATA_RACE (66 of 74 remaining) [2023-08-25 07:10:01,601 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err15ASSERT_VIOLATIONDATA_RACE (65 of 74 remaining) [2023-08-25 07:10:01,601 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err16ASSERT_VIOLATIONDATA_RACE (64 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (63 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (62 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (61 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (60 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONDATA_RACE (59 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONDATA_RACE (58 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONDATA_RACE (57 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONDATA_RACE (56 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (55 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (54 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (53 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (52 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (51 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONDATA_RACE (50 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONDATA_RACE (49 of 74 remaining) [2023-08-25 07:10:01,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONDATA_RACE (48 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONDATA_RACE (47 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONDATA_RACE (46 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err10ASSERT_VIOLATIONDATA_RACE (45 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err11ASSERT_VIOLATIONDATA_RACE (44 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (43 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (42 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (41 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (40 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (39 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (38 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (37 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (36 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (35 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (34 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (33 of 74 remaining) [2023-08-25 07:10:01,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (32 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (31 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (28 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err9ASSERT_VIOLATIONDATA_RACE (27 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err10ASSERT_VIOLATIONDATA_RACE (26 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err11ASSERT_VIOLATIONDATA_RACE (25 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err12ASSERT_VIOLATIONDATA_RACE (24 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err13ASSERT_VIOLATIONDATA_RACE (23 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err14ASSERT_VIOLATIONDATA_RACE (22 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err15ASSERT_VIOLATIONDATA_RACE (21 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err16ASSERT_VIOLATIONDATA_RACE (20 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (19 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (18 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (17 of 74 remaining) [2023-08-25 07:10:01,604 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (16 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONDATA_RACE (15 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONDATA_RACE (14 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONDATA_RACE (13 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONDATA_RACE (12 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (11 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (10 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (9 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (8 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (7 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONDATA_RACE (6 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONDATA_RACE (5 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONDATA_RACE (4 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONDATA_RACE (3 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONDATA_RACE (2 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err10ASSERT_VIOLATIONDATA_RACE (1 of 74 remaining) [2023-08-25 07:10:01,605 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err11ASSERT_VIOLATIONDATA_RACE (0 of 74 remaining) [2023-08-25 07:10:01,606 INFO L445 BasicCegarLoop]: Path program histogram: [35, 5, 1, 1, 1, 1, 1, 1] [2023-08-25 07:10:01,609 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 07:10:01,609 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 07:10:01,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 07:10:01 BasicIcfg [2023-08-25 07:10:01,611 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 07:10:01,612 INFO L158 Benchmark]: Toolchain (without parser) took 832931.44ms. Allocated memory was 367.0MB in the beginning and 8.3GB in the end (delta: 8.0GB). Free memory was 342.5MB in the beginning and 4.5GB in the end (delta: -4.1GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. [2023-08-25 07:10:01,612 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 367.0MB. Free memory is still 343.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 07:10:01,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.59ms. Allocated memory is still 367.0MB. Free memory was 342.5MB in the beginning and 330.1MB in the end (delta: 12.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-25 07:10:01,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.92ms. Allocated memory is still 367.0MB. Free memory was 330.1MB in the beginning and 327.2MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-25 07:10:01,612 INFO L158 Benchmark]: Boogie Preprocessor took 63.65ms. Allocated memory is still 367.0MB. Free memory was 327.2MB in the beginning and 325.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 07:10:01,612 INFO L158 Benchmark]: RCFGBuilder took 1005.31ms. Allocated memory is still 367.0MB. Free memory was 325.1MB in the beginning and 321.8MB in the end (delta: 3.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. [2023-08-25 07:10:01,612 INFO L158 Benchmark]: TraceAbstraction took 831496.83ms. Allocated memory was 367.0MB in the beginning and 8.3GB in the end (delta: 8.0GB). Free memory was 321.8MB in the beginning and 4.5GB in the end (delta: -4.1GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. [2023-08-25 07:10:01,613 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 367.0MB. Free memory is still 343.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 292.59ms. Allocated memory is still 367.0MB. Free memory was 342.5MB in the beginning and 330.1MB in the end (delta: 12.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 67.92ms. Allocated memory is still 367.0MB. Free memory was 330.1MB in the beginning and 327.2MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 63.65ms. Allocated memory is still 367.0MB. Free memory was 327.2MB in the beginning and 325.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 1005.31ms. Allocated memory is still 367.0MB. Free memory was 325.1MB in the beginning and 321.8MB in the end (delta: 3.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. * TraceAbstraction took 831496.83ms. Allocated memory was 367.0MB in the beginning and 8.3GB in the end (delta: 8.0GB). Free memory was 321.8MB in the beginning and 4.5GB in the end (delta: -4.1GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.1s, 213 PlacesBefore, 71 PlacesAfterwards, 217 TransitionsBefore, 67 TransitionsAfterwards, 3674 CoEnabledTransitionPairs, 8 FixpointIterations, 149 TrivialSequentialCompositions, 70 ConcurrentSequentialCompositions, 16 TrivialYvCompositions, 7 ConcurrentYvCompositions, 8 ChoiceCompositions, 250 TotalNumberOfCompositions, 10230 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4221, independent: 3995, independent conditional: 0, independent unconditional: 3995, dependent: 226, dependent conditional: 0, dependent unconditional: 226, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1536, independent: 1470, independent conditional: 0, independent unconditional: 1470, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4221, independent: 2525, independent conditional: 0, independent unconditional: 2525, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 1536, unknown conditional: 0, unknown unconditional: 1536] , Statistics on independence cache: Total cache size (in pairs): 119, Positive cache size: 87, Positive conditional cache size: 0, Positive unconditional cache size: 87, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 47]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 276 locations, 74 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 831.3s, OverallIterations: 46, TraceHistogramMax: 6, PathProgramHistogramMax: 35, EmptinessCheckTime: 0.0s, AutomataDifference: 554.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.2s, HoareTripleCheckerStatistics: 168 mSolverCounterUnknown, 8916 SdHoareTripleChecker+Valid, 80.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8916 mSDsluCounter, 6600 SdHoareTripleChecker+Invalid, 76.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 676 IncrementalHoareTripleChecker+Unchecked, 6173 mSDsCounter, 2797 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39723 IncrementalHoareTripleChecker+Invalid, 43365 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2797 mSolverCounterUnsat, 427 mSDtfsCounter, 39723 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3561 GetRequests, 1511 SyntacticMatches, 38 SemanticMatches, 2012 ConstructedPredicates, 4 IntricatePredicates, 2 DeprecatedPredicates, 26285 ImplicationChecksByTransitivity, 221.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126387occurred in iteration=45, InterpolantAutomatonStates: 1228, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 52.3s SatisfiabilityAnalysisTime, 197.6s InterpolantComputationTime, 2386 NumberOfCodeBlocks, 2381 NumberOfCodeBlocksAsserted, 132 NumberOfCheckSat, 3379 ConstructedInterpolants, 189 QuantifiedInterpolants, 67623 SizeOfPredicates, 608 NumberOfNonLiveVariables, 17547 ConjunctsInSsa, 1737 ConjunctsInUnsatCore, 125 InterpolantComputations, 6 PerfectInterpolantSequences, 341/1483 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown