/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-bad-counter-queue2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 19:55:58,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 19:55:58,816 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 19:55:58,820 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 19:55:58,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 19:55:58,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 19:55:58,843 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 19:55:58,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 19:55:58,844 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 19:55:58,846 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 19:55:58,846 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 19:55:58,847 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 19:55:58,847 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 19:55:58,848 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 19:55:58,848 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 19:55:58,848 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 19:55:58,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 19:55:58,848 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 19:55:58,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 19:55:58,849 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 19:55:58,849 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 19:55:58,849 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 19:55:58,850 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 19:55:58,850 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 19:55:58,850 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 19:55:58,850 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 19:55:58,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 19:55:58,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 19:55:58,851 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 19:55:58,851 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 19:55:58,852 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 19:55:58,852 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 19:55:58,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 19:55:58,852 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 19:55:58,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 19:55:58,852 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 19:55:59,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 19:55:59,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 19:55:59,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 19:55:59,153 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 19:55:59,165 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 19:55:59,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-counter-queue2.wvr.c [2023-08-25 19:56:00,111 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 19:56:00,354 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 19:56:00,355 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue2.wvr.c [2023-08-25 19:56:00,361 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105e7f3f3/8dd1681a589e436bbe5679beb799afe0/FLAG290208534 [2023-08-25 19:56:00,373 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105e7f3f3/8dd1681a589e436bbe5679beb799afe0 [2023-08-25 19:56:00,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 19:56:00,377 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 19:56:00,379 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 19:56:00,379 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 19:56:00,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 19:56:00,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:56:00" (1/1) ... [2023-08-25 19:56:00,383 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11618497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:56:00, skipping insertion in model container [2023-08-25 19:56:00,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:56:00" (1/1) ... [2023-08-25 19:56:00,401 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 19:56:00,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 19:56:00,552 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 19:56:00,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 19:56:00,593 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 19:56:00,593 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 19:56:00,597 INFO L206 MainTranslator]: Completed translation [2023-08-25 19:56:00,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:56:00 WrapperNode [2023-08-25 19:56:00,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 19:56:00,599 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 19:56:00,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 19:56:00,599 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 19:56:00,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:56:00" (1/1) ... [2023-08-25 19:56:00,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:56:00" (1/1) ... [2023-08-25 19:56:00,644 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 204 [2023-08-25 19:56:00,644 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 19:56:00,645 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 19:56:00,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 19:56:00,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 19:56:00,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:56:00" (1/1) ... [2023-08-25 19:56:00,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:56:00" (1/1) ... [2023-08-25 19:56:00,661 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:56:00" (1/1) ... [2023-08-25 19:56:00,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:56:00" (1/1) ... [2023-08-25 19:56:00,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:56:00" (1/1) ... [2023-08-25 19:56:00,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:56:00" (1/1) ... [2023-08-25 19:56:00,670 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:56:00" (1/1) ... [2023-08-25 19:56:00,671 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:56:00" (1/1) ... [2023-08-25 19:56:00,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 19:56:00,673 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 19:56:00,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 19:56:00,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 19:56:00,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:56:00" (1/1) ... [2023-08-25 19:56:00,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 19:56:00,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:00,708 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 19:56:00,729 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 19:56:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 19:56:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 19:56:00,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 19:56:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 19:56:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 19:56:00,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 19:56:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 19:56:00,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 19:56:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 19:56:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 19:56:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 19:56:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 19:56:00,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 19:56:00,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 19:56:00,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 19:56:00,738 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 19:56:00,831 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 19:56:00,832 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 19:56:01,127 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 19:56:01,220 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 19:56:01,220 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-25 19:56:01,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:56:01 BoogieIcfgContainer [2023-08-25 19:56:01,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 19:56:01,223 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 19:56:01,223 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 19:56:01,230 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 19:56:01,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:56:00" (1/3) ... [2023-08-25 19:56:01,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa22041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:56:01, skipping insertion in model container [2023-08-25 19:56:01,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:56:00" (2/3) ... [2023-08-25 19:56:01,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa22041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:56:01, skipping insertion in model container [2023-08-25 19:56:01,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:56:01" (3/3) ... [2023-08-25 19:56:01,232 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue2.wvr.c [2023-08-25 19:56:01,242 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 19:56:01,243 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-25 19:56:01,243 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 19:56:01,298 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 19:56:01,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 163 transitions, 342 flow [2023-08-25 19:56:01,400 INFO L124 PetriNetUnfolderBase]: 9/161 cut-off events. [2023-08-25 19:56:01,400 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 19:56:01,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 161 events. 9/161 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 155 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-08-25 19:56:01,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 163 transitions, 342 flow [2023-08-25 19:56:01,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 152 transitions, 316 flow [2023-08-25 19:56:01,413 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 19:56:01,419 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 152 transitions, 316 flow [2023-08-25 19:56:01,421 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 152 transitions, 316 flow [2023-08-25 19:56:01,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 152 transitions, 316 flow [2023-08-25 19:56:01,443 INFO L124 PetriNetUnfolderBase]: 9/152 cut-off events. [2023-08-25 19:56:01,443 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 19:56:01,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 152 events. 9/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 154 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2023-08-25 19:56:01,447 INFO L119 LiptonReduction]: Number of co-enabled transitions 1836 [2023-08-25 19:56:05,417 INFO L134 LiptonReduction]: Checked pairs total: 9589 [2023-08-25 19:56:05,417 INFO L136 LiptonReduction]: Total number of compositions: 146 [2023-08-25 19:56:05,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 19:56:05,430 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;@12c9ea99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 19:56:05,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-25 19:56:05,431 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 19:56:05,431 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 19:56:05,431 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 19:56:05,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:05,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 19:56:05,432 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:05,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:05,434 INFO L85 PathProgramCache]: Analyzing trace with hash 748, now seen corresponding path program 1 times [2023-08-25 19:56:05,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:05,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749709408] [2023-08-25 19:56:05,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:05,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:05,492 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 19:56:05,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:05,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749709408] [2023-08-25 19:56:05,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749709408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:56:05,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:56:05,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 19:56:05,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867436093] [2023-08-25 19:56:05,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:56:05,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 19:56:05,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:05,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 19:56:05,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 19:56:05,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 309 [2023-08-25 19:56:05,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 19:56:05,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:05,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 309 [2023-08-25 19:56:05,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:05,595 INFO L124 PetriNetUnfolderBase]: 58/185 cut-off events. [2023-08-25 19:56:05,596 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-25 19:56:05,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 185 events. 58/185 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 773 event pairs, 27 based on Foata normal form. 30/178 useless extension candidates. Maximal degree in co-relation 217. Up to 97 conditions per place. [2023-08-25 19:56:05,598 INFO L140 encePairwiseOnDemand]: 294/309 looper letters, 16 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2023-08-25 19:56:05,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 110 flow [2023-08-25 19:56:05,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 19:56:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 19:56:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 315 transitions. [2023-08-25 19:56:05,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5097087378640777 [2023-08-25 19:56:05,615 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 315 transitions. [2023-08-25 19:56:05,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 315 transitions. [2023-08-25 19:56:05,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:05,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 315 transitions. [2023-08-25 19:56:05,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 157.5) internal successors, (315), 2 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 19:56:05,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 19:56:05,628 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 19:56:05,630 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 108 flow. Second operand 2 states and 315 transitions. [2023-08-25 19:56:05,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 110 flow [2023-08-25 19:56:05,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 102 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 19:56:05,634 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 70 flow [2023-08-25 19:56:05,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2023-08-25 19:56:05,640 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -16 predicate places. [2023-08-25 19:56:05,640 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 70 flow [2023-08-25 19:56:05,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 142.5) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 19:56:05,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:05,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 19:56:05,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 19:56:05,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:05,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:05,643 INFO L85 PathProgramCache]: Analyzing trace with hash 811658734, now seen corresponding path program 1 times [2023-08-25 19:56:05,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:05,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644977634] [2023-08-25 19:56:05,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:05,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:05,767 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 19:56:05,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:05,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644977634] [2023-08-25 19:56:05,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644977634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:56:05,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:56:05,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 19:56:05,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682779929] [2023-08-25 19:56:05,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:56:05,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:56:05,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:05,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:56:05,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:56:05,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 309 [2023-08-25 19:56:05,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:56:05,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:05,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 309 [2023-08-25 19:56:05,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:05,820 INFO L124 PetriNetUnfolderBase]: 91/230 cut-off events. [2023-08-25 19:56:05,820 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 19:56:05,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 230 events. 91/230 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 895 event pairs, 66 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 398. Up to 162 conditions per place. [2023-08-25 19:56:05,821 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 18 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-08-25 19:56:05,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 104 flow [2023-08-25 19:56:05,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:56:05,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:56:05,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 411 transitions. [2023-08-25 19:56:05,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44336569579288027 [2023-08-25 19:56:05,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 411 transitions. [2023-08-25 19:56:05,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 411 transitions. [2023-08-25 19:56:05,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:05,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 411 transitions. [2023-08-25 19:56:05,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 19:56:05,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 19:56:05,826 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 19:56:05,826 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 70 flow. Second operand 3 states and 411 transitions. [2023-08-25 19:56:05,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 104 flow [2023-08-25 19:56:05,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 19:56:05,827 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 68 flow [2023-08-25 19:56:05,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-08-25 19:56:05,828 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -16 predicate places. [2023-08-25 19:56:05,828 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 68 flow [2023-08-25 19:56:05,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:56:05,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:05,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:05,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 19:56:05,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:05,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:05,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1728636445, now seen corresponding path program 1 times [2023-08-25 19:56:05,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:05,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185535377] [2023-08-25 19:56:05,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:05,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:06,133 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 19:56:06,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:06,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185535377] [2023-08-25 19:56:06,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185535377] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:56:06,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:56:06,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 19:56:06,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266689113] [2023-08-25 19:56:06,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:56:06,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 19:56:06,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:06,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 19:56:06,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 19:56:06,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 309 [2023-08-25 19:56:06,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 68 flow. Second operand has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states 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 19:56:06,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:06,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 309 [2023-08-25 19:56:06,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:06,285 INFO L124 PetriNetUnfolderBase]: 207/327 cut-off events. [2023-08-25 19:56:06,285 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 19:56:06,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 327 events. 207/327 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1257 event pairs, 7 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 645. Up to 151 conditions per place. [2023-08-25 19:56:06,290 INFO L140 encePairwiseOnDemand]: 304/309 looper letters, 41 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-08-25 19:56:06,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 50 transitions, 196 flow [2023-08-25 19:56:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 19:56:06,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 19:56:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 754 transitions. [2023-08-25 19:56:06,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40668824163969797 [2023-08-25 19:56:06,292 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 754 transitions. [2023-08-25 19:56:06,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 754 transitions. [2023-08-25 19:56:06,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:06,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 754 transitions. [2023-08-25 19:56:06,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 0 states 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 19:56:06,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states 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 19:56:06,297 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states 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 19:56:06,297 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 68 flow. Second operand 6 states and 754 transitions. [2023-08-25 19:56:06,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 50 transitions, 196 flow [2023-08-25 19:56:06,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 50 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 19:56:06,298 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 73 flow [2023-08-25 19:56:06,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=73, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-08-25 19:56:06,299 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -13 predicate places. [2023-08-25 19:56:06,300 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 73 flow [2023-08-25 19:56:06,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states 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 19:56:06,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:06,300 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 19:56:06,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 19:56:06,303 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:06,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:06,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1377768059, now seen corresponding path program 1 times [2023-08-25 19:56:06,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:06,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547729799] [2023-08-25 19:56:06,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:06,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:06,555 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 19:56:06,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:06,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547729799] [2023-08-25 19:56:06,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547729799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:56:06,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:56:06,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 19:56:06,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781262668] [2023-08-25 19:56:06,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:56:06,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 19:56:06,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:06,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 19:56:06,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 19:56:06,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 309 [2023-08-25 19:56:06,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 73 flow. Second operand has 6 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 0 states have call successors, (0), 0 states 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 19:56:06,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:06,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 309 [2023-08-25 19:56:06,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:06,667 INFO L124 PetriNetUnfolderBase]: 202/324 cut-off events. [2023-08-25 19:56:06,667 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-25 19:56:06,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 324 events. 202/324 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1248 event pairs, 92 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 678. Up to 258 conditions per place. [2023-08-25 19:56:06,669 INFO L140 encePairwiseOnDemand]: 304/309 looper letters, 32 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-08-25 19:56:06,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 167 flow [2023-08-25 19:56:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 19:56:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 19:56:06,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 745 transitions. [2023-08-25 19:56:06,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40183387270765913 [2023-08-25 19:56:06,671 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 745 transitions. [2023-08-25 19:56:06,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 745 transitions. [2023-08-25 19:56:06,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:06,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 745 transitions. [2023-08-25 19:56:06,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 19:56:06,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states 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 19:56:06,675 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states 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 19:56:06,675 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 73 flow. Second operand 6 states and 745 transitions. [2023-08-25 19:56:06,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 167 flow [2023-08-25 19:56:06,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 160 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 19:56:06,676 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 72 flow [2023-08-25 19:56:06,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=72, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-08-25 19:56:06,677 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -13 predicate places. [2023-08-25 19:56:06,677 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 72 flow [2023-08-25 19:56:06,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 0 states have call successors, (0), 0 states 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 19:56:06,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:06,677 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 19:56:06,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 19:56:06,677 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:06,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:06,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2032551774, now seen corresponding path program 1 times [2023-08-25 19:56:06,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:06,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851501942] [2023-08-25 19:56:06,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:06,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:06,736 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 19:56:06,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:06,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851501942] [2023-08-25 19:56:06,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851501942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:56:06,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:56:06,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 19:56:06,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373869940] [2023-08-25 19:56:06,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:56:06,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 19:56:06,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:06,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 19:56:06,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 19:56:06,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309 [2023-08-25 19:56:06,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 19:56:06,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:06,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309 [2023-08-25 19:56:06,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:06,775 INFO L124 PetriNetUnfolderBase]: 87/229 cut-off events. [2023-08-25 19:56:06,775 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 19:56:06,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 229 events. 87/229 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 990 event pairs, 15 based on Foata normal form. 1/202 useless extension candidates. Maximal degree in co-relation 417. Up to 108 conditions per place. [2023-08-25 19:56:06,776 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 23 selfloop transitions, 3 changer transitions 1/40 dead transitions. [2023-08-25 19:56:06,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 153 flow [2023-08-25 19:56:06,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 19:56:06,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 19:56:06,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-08-25 19:56:06,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48327939590075514 [2023-08-25 19:56:06,778 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-08-25 19:56:06,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-08-25 19:56:06,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:06,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-08-25 19:56:06,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 19:56:06,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 19:56:06,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 19:56:06,780 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 72 flow. Second operand 3 states and 448 transitions. [2023-08-25 19:56:06,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 153 flow [2023-08-25 19:56:06,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 144 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 19:56:06,781 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 84 flow [2023-08-25 19:56:06,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-25 19:56:06,782 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -14 predicate places. [2023-08-25 19:56:06,782 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 84 flow [2023-08-25 19:56:06,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 19:56:06,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:06,782 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:06,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 19:56:06,783 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:06,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:06,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1587915342, now seen corresponding path program 1 times [2023-08-25 19:56:06,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:06,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180590654] [2023-08-25 19:56:06,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:06,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:06,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:06,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180590654] [2023-08-25 19:56:06,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180590654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:56:06,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:56:06,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 19:56:06,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481199178] [2023-08-25 19:56:06,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:56:06,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 19:56:06,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 19:56:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 19:56:06,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 309 [2023-08-25 19:56:06,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 0 states have call successors, (0), 0 states 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 19:56:06,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:06,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 309 [2023-08-25 19:56:06,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:06,943 INFO L124 PetriNetUnfolderBase]: 145/453 cut-off events. [2023-08-25 19:56:06,943 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-25 19:56:06,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 453 events. 145/453 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2516 event pairs, 68 based on Foata normal form. 14/417 useless extension candidates. Maximal degree in co-relation 847. Up to 154 conditions per place. [2023-08-25 19:56:06,945 INFO L140 encePairwiseOnDemand]: 303/309 looper letters, 37 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2023-08-25 19:56:06,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 231 flow [2023-08-25 19:56:06,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 19:56:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 19:56:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 604 transitions. [2023-08-25 19:56:06,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39093851132686086 [2023-08-25 19:56:06,947 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 604 transitions. [2023-08-25 19:56:06,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 604 transitions. [2023-08-25 19:56:06,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:06,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 604 transitions. [2023-08-25 19:56:06,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.8) internal successors, (604), 5 states have internal predecessors, (604), 0 states have call successors, (0), 0 states 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 19:56:06,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 19:56:06,949 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 19:56:06,950 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 84 flow. Second operand 5 states and 604 transitions. [2023-08-25 19:56:06,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 231 flow [2023-08-25 19:56:06,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 19:56:06,952 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 119 flow [2023-08-25 19:56:06,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-25 19:56:06,954 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -8 predicate places. [2023-08-25 19:56:06,954 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 119 flow [2023-08-25 19:56:06,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 0 states have call successors, (0), 0 states 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 19:56:06,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:06,954 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:06,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 19:56:06,955 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:06,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:06,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1684726952, now seen corresponding path program 1 times [2023-08-25 19:56:06,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:06,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321542238] [2023-08-25 19:56:06,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:06,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:07,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:07,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321542238] [2023-08-25 19:56:07,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321542238] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 19:56:07,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 19:56:07,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 19:56:07,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824084325] [2023-08-25 19:56:07,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:56:07,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 19:56:07,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:07,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 19:56:07,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 19:56:07,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 309 [2023-08-25 19:56:07,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states 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 19:56:07,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:07,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 309 [2023-08-25 19:56:07,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:07,091 INFO L124 PetriNetUnfolderBase]: 104/338 cut-off events. [2023-08-25 19:56:07,091 INFO L125 PetriNetUnfolderBase]: For 152/163 co-relation queries the response was YES. [2023-08-25 19:56:07,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 338 events. 104/338 cut-off events. For 152/163 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1790 event pairs, 61 based on Foata normal form. 11/329 useless extension candidates. Maximal degree in co-relation 694. Up to 157 conditions per place. [2023-08-25 19:56:07,092 INFO L140 encePairwiseOnDemand]: 303/309 looper letters, 18 selfloop transitions, 2 changer transitions 16/48 dead transitions. [2023-08-25 19:56:07,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 224 flow [2023-08-25 19:56:07,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 19:56:07,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 19:56:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 599 transitions. [2023-08-25 19:56:07,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3877022653721683 [2023-08-25 19:56:07,094 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 599 transitions. [2023-08-25 19:56:07,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 599 transitions. [2023-08-25 19:56:07,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:07,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 599 transitions. [2023-08-25 19:56:07,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states 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 19:56:07,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 19:56:07,097 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 19:56:07,097 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 119 flow. Second operand 5 states and 599 transitions. [2023-08-25 19:56:07,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 224 flow [2023-08-25 19:56:07,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 220 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 19:56:07,099 INFO L231 Difference]: Finished difference. Result has 47 places, 32 transitions, 107 flow [2023-08-25 19:56:07,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=47, PETRI_TRANSITIONS=32} [2023-08-25 19:56:07,099 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2023-08-25 19:56:07,099 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 32 transitions, 107 flow [2023-08-25 19:56:07,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states 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 19:56:07,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:07,100 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:07,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 19:56:07,100 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:07,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:07,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1955754612, now seen corresponding path program 1 times [2023-08-25 19:56:07,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:07,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713964473] [2023-08-25 19:56:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:07,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 19:56:07,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:07,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713964473] [2023-08-25 19:56:07,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713964473] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:07,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972499689] [2023-08-25 19:56:07,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:07,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:07,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:07,218 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 19:56:07,224 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 19:56:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:07,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 19:56:07,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:07,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 19:56:07,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:07,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 19:56:07,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972499689] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:07,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:56:07,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-25 19:56:07,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973034539] [2023-08-25 19:56:07,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:56:07,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 19:56:07,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:07,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 19:56:07,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-25 19:56:07,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 309 [2023-08-25 19:56:07,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 32 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states 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 19:56:07,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:07,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 309 [2023-08-25 19:56:07,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:07,486 INFO L124 PetriNetUnfolderBase]: 89/232 cut-off events. [2023-08-25 19:56:07,486 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2023-08-25 19:56:07,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 232 events. 89/232 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1025 event pairs, 23 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 548. Up to 86 conditions per place. [2023-08-25 19:56:07,488 INFO L140 encePairwiseOnDemand]: 303/309 looper letters, 21 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2023-08-25 19:56:07,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 188 flow [2023-08-25 19:56:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 19:56:07,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 19:56:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 590 transitions. [2023-08-25 19:56:07,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3818770226537217 [2023-08-25 19:56:07,489 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 590 transitions. [2023-08-25 19:56:07,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 590 transitions. [2023-08-25 19:56:07,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:07,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 590 transitions. [2023-08-25 19:56:07,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states 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 19:56:07,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 19:56:07,492 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 19:56:07,492 INFO L175 Difference]: Start difference. First operand has 47 places, 32 transitions, 107 flow. Second operand 5 states and 590 transitions. [2023-08-25 19:56:07,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 188 flow [2023-08-25 19:56:07,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 160 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-25 19:56:07,493 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 114 flow [2023-08-25 19:56:07,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2023-08-25 19:56:07,494 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -7 predicate places. [2023-08-25 19:56:07,494 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 114 flow [2023-08-25 19:56:07,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states 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 19:56:07,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:07,494 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:07,504 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 19:56:07,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:07,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:07,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:07,700 INFO L85 PathProgramCache]: Analyzing trace with hash -142562016, now seen corresponding path program 1 times [2023-08-25 19:56:07,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:07,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260078413] [2023-08-25 19:56:07,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:07,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 19:56:07,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:07,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260078413] [2023-08-25 19:56:07,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260078413] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:07,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755736258] [2023-08-25 19:56:07,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:07,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:07,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:07,769 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 19:56:07,797 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 19:56:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:07,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 19:56:07,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 19:56:07,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 19:56:07,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755736258] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:07,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 19:56:07,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-25 19:56:07,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010973286] [2023-08-25 19:56:07,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 19:56:07,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 19:56:07,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:07,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 19:56:07,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-25 19:56:07,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 309 [2023-08-25 19:56:07,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 19:56:07,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:07,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 309 [2023-08-25 19:56:07,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:07,969 INFO L124 PetriNetUnfolderBase]: 72/196 cut-off events. [2023-08-25 19:56:07,970 INFO L125 PetriNetUnfolderBase]: For 121/128 co-relation queries the response was YES. [2023-08-25 19:56:07,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 196 events. 72/196 cut-off events. For 121/128 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 691 event pairs, 24 based on Foata normal form. 16/200 useless extension candidates. Maximal degree in co-relation 457. Up to 99 conditions per place. [2023-08-25 19:56:07,971 INFO L140 encePairwiseOnDemand]: 304/309 looper letters, 25 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-08-25 19:56:07,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 42 transitions, 215 flow [2023-08-25 19:56:07,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 19:56:07,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 19:56:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 591 transitions. [2023-08-25 19:56:07,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3825242718446602 [2023-08-25 19:56:07,972 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 591 transitions. [2023-08-25 19:56:07,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 591 transitions. [2023-08-25 19:56:07,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:07,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 591 transitions. [2023-08-25 19:56:07,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.2) internal successors, (591), 5 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:56:07,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 19:56:07,975 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 19:56:07,975 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 114 flow. Second operand 5 states and 591 transitions. [2023-08-25 19:56:07,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 42 transitions, 215 flow [2023-08-25 19:56:07,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 205 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 19:56:07,976 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 128 flow [2023-08-25 19:56:07,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2023-08-25 19:56:07,977 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-08-25 19:56:07,977 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 128 flow [2023-08-25 19:56:07,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 19:56:07,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:07,977 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:07,984 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 19:56:08,182 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,SelfDestructingSolverStorable8 [2023-08-25 19:56:08,182 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:08,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:08,183 INFO L85 PathProgramCache]: Analyzing trace with hash 726304904, now seen corresponding path program 1 times [2023-08-25 19:56:08,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:08,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725244992] [2023-08-25 19:56:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:08,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:08,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:08,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:08,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725244992] [2023-08-25 19:56:08,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725244992] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:08,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603606148] [2023-08-25 19:56:08,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:08,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:08,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:08,628 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 19:56:08,644 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 19:56:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:08,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-25 19:56:08,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:08,775 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 11 treesize of output 7 [2023-08-25 19:56:08,801 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 19:56:08,821 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 19:56:08,945 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 19:56:08,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:09,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603606148] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:09,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:09,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 4] total 12 [2023-08-25 19:56:09,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518522920] [2023-08-25 19:56:09,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:09,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 19:56:09,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:09,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 19:56:09,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-25 19:56:09,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 309 [2023-08-25 19:56:09,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 128 flow. Second operand has 14 states, 14 states have (on average 88.5) internal successors, (1239), 14 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states 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 19:56:09,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:09,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 309 [2023-08-25 19:56:09,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:09,443 INFO L124 PetriNetUnfolderBase]: 444/866 cut-off events. [2023-08-25 19:56:09,444 INFO L125 PetriNetUnfolderBase]: For 937/961 co-relation queries the response was YES. [2023-08-25 19:56:09,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2460 conditions, 866 events. 444/866 cut-off events. For 937/961 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4356 event pairs, 31 based on Foata normal form. 1/858 useless extension candidates. Maximal degree in co-relation 2451. Up to 429 conditions per place. [2023-08-25 19:56:09,449 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 74 selfloop transitions, 13 changer transitions 1/91 dead transitions. [2023-08-25 19:56:09,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 91 transitions, 486 flow [2023-08-25 19:56:09,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 19:56:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 19:56:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 767 transitions. [2023-08-25 19:56:09,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31027508090614886 [2023-08-25 19:56:09,451 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 767 transitions. [2023-08-25 19:56:09,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 767 transitions. [2023-08-25 19:56:09,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:09,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 767 transitions. [2023-08-25 19:56:09,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.875) internal successors, (767), 8 states have internal predecessors, (767), 0 states have call successors, (0), 0 states 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 19:56:09,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 309.0) internal successors, (2781), 9 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states 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 19:56:09,457 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 309.0) internal successors, (2781), 9 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states 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 19:56:09,457 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 128 flow. Second operand 8 states and 767 transitions. [2023-08-25 19:56:09,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 91 transitions, 486 flow [2023-08-25 19:56:09,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 91 transitions, 475 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 19:56:09,460 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 221 flow [2023-08-25 19:56:09,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=221, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-08-25 19:56:09,461 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-08-25 19:56:09,461 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 221 flow [2023-08-25 19:56:09,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 88.5) internal successors, (1239), 14 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states 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 19:56:09,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:09,462 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:09,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-25 19:56:09,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:09,667 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:09,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash -393521322, now seen corresponding path program 2 times [2023-08-25 19:56:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:09,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344874667] [2023-08-25 19:56:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:09,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:09,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:09,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344874667] [2023-08-25 19:56:09,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344874667] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:09,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247185785] [2023-08-25 19:56:09,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:56:09,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:09,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:09,998 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 19:56:10,045 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 19:56:10,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:56:10,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:10,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-25 19:56:10,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:10,276 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:10,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:10,325 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:10,325 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 22 treesize of output 15 [2023-08-25 19:56:10,338 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 19:56:10,338 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 10 [2023-08-25 19:56:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:10,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247185785] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:10,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:10,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 9 [2023-08-25 19:56:10,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482205360] [2023-08-25 19:56:10,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:10,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 19:56:10,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:10,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 19:56:10,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-25 19:56:10,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 309 [2023-08-25 19:56:10,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 221 flow. Second operand has 11 states, 11 states have (on average 112.81818181818181) internal successors, (1241), 11 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 19:56:10,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:10,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 309 [2023-08-25 19:56:10,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:10,655 INFO L124 PetriNetUnfolderBase]: 172/435 cut-off events. [2023-08-25 19:56:10,655 INFO L125 PetriNetUnfolderBase]: For 662/687 co-relation queries the response was YES. [2023-08-25 19:56:10,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 435 events. 172/435 cut-off events. For 662/687 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2115 event pairs, 28 based on Foata normal form. 6/437 useless extension candidates. Maximal degree in co-relation 1253. Up to 212 conditions per place. [2023-08-25 19:56:10,657 INFO L140 encePairwiseOnDemand]: 303/309 looper letters, 46 selfloop transitions, 14 changer transitions 1/72 dead transitions. [2023-08-25 19:56:10,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 468 flow [2023-08-25 19:56:10,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 19:56:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 19:56:10,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 823 transitions. [2023-08-25 19:56:10,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3804900601017106 [2023-08-25 19:56:10,659 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 823 transitions. [2023-08-25 19:56:10,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 823 transitions. [2023-08-25 19:56:10,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:10,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 823 transitions. [2023-08-25 19:56:10,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.57142857142857) internal successors, (823), 7 states have internal predecessors, (823), 0 states have call successors, (0), 0 states 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 19:56:10,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 19:56:10,663 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 19:56:10,663 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 221 flow. Second operand 7 states and 823 transitions. [2023-08-25 19:56:10,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 468 flow [2023-08-25 19:56:10,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 72 transitions, 451 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-25 19:56:10,665 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 314 flow [2023-08-25 19:56:10,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=314, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-08-25 19:56:10,666 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-08-25 19:56:10,666 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 314 flow [2023-08-25 19:56:10,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 112.81818181818181) internal successors, (1241), 11 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 19:56:10,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:10,666 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:10,687 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 19:56:10,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:10,872 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:10,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:10,872 INFO L85 PathProgramCache]: Analyzing trace with hash -639039554, now seen corresponding path program 3 times [2023-08-25 19:56:10,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:10,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758079175] [2023-08-25 19:56:10,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:10,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:11,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:11,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758079175] [2023-08-25 19:56:11,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758079175] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:11,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189087651] [2023-08-25 19:56:11,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:56:11,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:11,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:11,245 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 19:56:11,287 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 19:56:11,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 19:56:11,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:11,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-25 19:56:11,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:11,408 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 11 treesize of output 7 [2023-08-25 19:56:11,431 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 19:56:11,449 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 19:56:11,542 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 19:56:11,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:11,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189087651] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:11,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:11,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 4] total 12 [2023-08-25 19:56:11,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303204251] [2023-08-25 19:56:11,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:11,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 19:56:11,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:11,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 19:56:11,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-08-25 19:56:11,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 309 [2023-08-25 19:56:11,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 314 flow. Second operand has 14 states, 14 states have (on average 88.14285714285714) internal successors, (1234), 14 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states 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 19:56:11,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:11,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 309 [2023-08-25 19:56:11,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:11,979 INFO L124 PetriNetUnfolderBase]: 701/1356 cut-off events. [2023-08-25 19:56:11,979 INFO L125 PetriNetUnfolderBase]: For 2968/3058 co-relation queries the response was YES. [2023-08-25 19:56:11,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4562 conditions, 1356 events. 701/1356 cut-off events. For 2968/3058 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7677 event pairs, 130 based on Foata normal form. 25/1373 useless extension candidates. Maximal degree in co-relation 4546. Up to 891 conditions per place. [2023-08-25 19:56:11,987 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 79 selfloop transitions, 15 changer transitions 1/98 dead transitions. [2023-08-25 19:56:11,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 98 transitions, 658 flow [2023-08-25 19:56:11,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 19:56:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 19:56:11,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 764 transitions. [2023-08-25 19:56:11,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30906148867313915 [2023-08-25 19:56:11,989 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 764 transitions. [2023-08-25 19:56:11,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 764 transitions. [2023-08-25 19:56:11,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:11,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 764 transitions. [2023-08-25 19:56:11,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.5) internal successors, (764), 8 states have internal predecessors, (764), 0 states have call successors, (0), 0 states 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 19:56:11,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 309.0) internal successors, (2781), 9 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states 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 19:56:11,993 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 309.0) internal successors, (2781), 9 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states 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 19:56:11,993 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 314 flow. Second operand 8 states and 764 transitions. [2023-08-25 19:56:11,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 98 transitions, 658 flow [2023-08-25 19:56:11,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 98 transitions, 642 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-25 19:56:11,996 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 380 flow [2023-08-25 19:56:11,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=380, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2023-08-25 19:56:11,996 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 18 predicate places. [2023-08-25 19:56:11,996 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 380 flow [2023-08-25 19:56:11,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 88.14285714285714) internal successors, (1234), 14 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states 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 19:56:11,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:11,997 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:12,002 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 19:56:12,202 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,SelfDestructingSolverStorable11 [2023-08-25 19:56:12,202 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:12,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:12,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1750687526, now seen corresponding path program 4 times [2023-08-25 19:56:12,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:12,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34363635] [2023-08-25 19:56:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:12,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:12,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:12,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34363635] [2023-08-25 19:56:12,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34363635] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:12,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267385850] [2023-08-25 19:56:12,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:56:12,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:12,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:12,494 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 19:56:12,495 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 19:56:12,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:56:12,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:12,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-25 19:56:12,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:12,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:12,796 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:12,796 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 17 treesize of output 14 [2023-08-25 19:56:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:12,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267385850] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:12,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:12,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2023-08-25 19:56:12,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436211503] [2023-08-25 19:56:12,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:12,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 19:56:12,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:12,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 19:56:12,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-08-25 19:56:12,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 309 [2023-08-25 19:56:12,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 380 flow. Second operand has 12 states, 12 states have (on average 112.83333333333333) internal successors, (1354), 12 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states 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 19:56:12,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:12,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 309 [2023-08-25 19:56:12,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:13,055 INFO L124 PetriNetUnfolderBase]: 257/638 cut-off events. [2023-08-25 19:56:13,055 INFO L125 PetriNetUnfolderBase]: For 1521/1543 co-relation queries the response was YES. [2023-08-25 19:56:13,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2066 conditions, 638 events. 257/638 cut-off events. For 1521/1543 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3652 event pairs, 30 based on Foata normal form. 15/649 useless extension candidates. Maximal degree in co-relation 2047. Up to 303 conditions per place. [2023-08-25 19:56:13,059 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 55 selfloop transitions, 20 changer transitions 1/87 dead transitions. [2023-08-25 19:56:13,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 87 transitions, 681 flow [2023-08-25 19:56:13,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 19:56:13,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 19:56:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 829 transitions. [2023-08-25 19:56:13,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3832639852057328 [2023-08-25 19:56:13,061 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 829 transitions. [2023-08-25 19:56:13,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 829 transitions. [2023-08-25 19:56:13,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:13,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 829 transitions. [2023-08-25 19:56:13,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.42857142857143) internal successors, (829), 7 states have internal predecessors, (829), 0 states have call successors, (0), 0 states 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 19:56:13,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 19:56:13,065 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 19:56:13,065 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 380 flow. Second operand 7 states and 829 transitions. [2023-08-25 19:56:13,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 87 transitions, 681 flow [2023-08-25 19:56:13,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 87 transitions, 646 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-25 19:56:13,068 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 479 flow [2023-08-25 19:56:13,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=479, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2023-08-25 19:56:13,069 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 22 predicate places. [2023-08-25 19:56:13,069 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 479 flow [2023-08-25 19:56:13,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 112.83333333333333) internal successors, (1354), 12 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states 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 19:56:13,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:13,070 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:13,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-25 19:56:13,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:13,275 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:13,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:13,275 INFO L85 PathProgramCache]: Analyzing trace with hash 217053024, now seen corresponding path program 5 times [2023-08-25 19:56:13,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:13,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777668854] [2023-08-25 19:56:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:13,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:13,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:13,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777668854] [2023-08-25 19:56:13,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777668854] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:13,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192111846] [2023-08-25 19:56:13,597 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 19:56:13,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:13,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:13,613 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 19:56:13,614 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 19:56:13,852 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:56:13,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:13,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-25 19:56:13,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:13,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:56:13,956 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 14 treesize of output 16 [2023-08-25 19:56:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:14,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:14,158 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:14,158 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 44 treesize of output 32 [2023-08-25 19:56:14,161 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 12 treesize of output 10 [2023-08-25 19:56:14,171 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 19:56:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:14,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192111846] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:14,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:14,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-25 19:56:14,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769332836] [2023-08-25 19:56:14,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:14,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 19:56:14,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:14,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 19:56:14,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=269, Unknown=3, NotChecked=0, Total=342 [2023-08-25 19:56:14,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 309 [2023-08-25 19:56:14,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 479 flow. Second operand has 19 states, 19 states have (on average 102.3157894736842) internal successors, (1944), 19 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states 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 19:56:14,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:14,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 309 [2023-08-25 19:56:14,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:14,616 INFO L124 PetriNetUnfolderBase]: 427/946 cut-off events. [2023-08-25 19:56:14,616 INFO L125 PetriNetUnfolderBase]: For 2873/2891 co-relation queries the response was YES. [2023-08-25 19:56:14,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3370 conditions, 946 events. 427/946 cut-off events. For 2873/2891 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5619 event pairs, 35 based on Foata normal form. 13/956 useless extension candidates. Maximal degree in co-relation 3348. Up to 448 conditions per place. [2023-08-25 19:56:14,622 INFO L140 encePairwiseOnDemand]: 303/309 looper letters, 72 selfloop transitions, 25 changer transitions 1/105 dead transitions. [2023-08-25 19:56:14,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 105 transitions, 865 flow [2023-08-25 19:56:14,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 19:56:14,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 19:56:14,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 775 transitions. [2023-08-25 19:56:14,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3582986592695331 [2023-08-25 19:56:14,624 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 775 transitions. [2023-08-25 19:56:14,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 775 transitions. [2023-08-25 19:56:14,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:14,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 775 transitions. [2023-08-25 19:56:14,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.71428571428571) internal successors, (775), 7 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:56:14,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 19:56:14,628 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 19:56:14,628 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 479 flow. Second operand 7 states and 775 transitions. [2023-08-25 19:56:14,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 105 transitions, 865 flow [2023-08-25 19:56:14,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 105 transitions, 816 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-08-25 19:56:14,633 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 586 flow [2023-08-25 19:56:14,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=586, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2023-08-25 19:56:14,633 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2023-08-25 19:56:14,633 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 586 flow [2023-08-25 19:56:14,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 102.3157894736842) internal successors, (1944), 19 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states 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 19:56:14,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:14,634 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:14,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-25 19:56:14,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:14,840 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:14,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:14,841 INFO L85 PathProgramCache]: Analyzing trace with hash 126553866, now seen corresponding path program 6 times [2023-08-25 19:56:14,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:14,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54893737] [2023-08-25 19:56:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:14,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:15,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:15,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54893737] [2023-08-25 19:56:15,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54893737] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:15,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040806917] [2023-08-25 19:56:15,095 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 19:56:15,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:15,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:15,118 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 19:56:15,156 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 19:56:15,259 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 19:56:15,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:15,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-25 19:56:15,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:15,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:15,395 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:15,396 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 14 [2023-08-25 19:56:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:15,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040806917] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:15,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:15,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 9 [2023-08-25 19:56:15,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318541767] [2023-08-25 19:56:15,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:15,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 19:56:15,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:15,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 19:56:15,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-25 19:56:15,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 309 [2023-08-25 19:56:15,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 586 flow. Second operand has 11 states, 11 states have (on average 112.81818181818181) internal successors, (1241), 11 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 19:56:15,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:15,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 309 [2023-08-25 19:56:15,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:15,637 INFO L124 PetriNetUnfolderBase]: 340/887 cut-off events. [2023-08-25 19:56:15,637 INFO L125 PetriNetUnfolderBase]: For 3003/3025 co-relation queries the response was YES. [2023-08-25 19:56:15,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3031 conditions, 887 events. 340/887 cut-off events. For 3003/3025 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5695 event pairs, 102 based on Foata normal form. 7/888 useless extension candidates. Maximal degree in co-relation 3006. Up to 523 conditions per place. [2023-08-25 19:56:15,643 INFO L140 encePairwiseOnDemand]: 303/309 looper letters, 62 selfloop transitions, 14 changer transitions 1/88 dead transitions. [2023-08-25 19:56:15,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 88 transitions, 853 flow [2023-08-25 19:56:15,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 19:56:15,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 19:56:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 818 transitions. [2023-08-25 19:56:15,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37817845584835874 [2023-08-25 19:56:15,645 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 818 transitions. [2023-08-25 19:56:15,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 818 transitions. [2023-08-25 19:56:15,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:15,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 818 transitions. [2023-08-25 19:56:15,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.85714285714286) internal successors, (818), 7 states have internal predecessors, (818), 0 states have call successors, (0), 0 states 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 19:56:15,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 19:56:15,649 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 19:56:15,649 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 586 flow. Second operand 7 states and 818 transitions. [2023-08-25 19:56:15,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 88 transitions, 853 flow [2023-08-25 19:56:15,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 789 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-08-25 19:56:15,654 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 622 flow [2023-08-25 19:56:15,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=622, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2023-08-25 19:56:15,655 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-08-25 19:56:15,655 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 622 flow [2023-08-25 19:56:15,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 112.81818181818181) internal successors, (1241), 11 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 19:56:15,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:15,656 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:15,672 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 19:56:15,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-25 19:56:15,862 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:15,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:15,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1306204774, now seen corresponding path program 7 times [2023-08-25 19:56:15,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:15,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749801147] [2023-08-25 19:56:15,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:15,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:16,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:16,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749801147] [2023-08-25 19:56:16,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749801147] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:16,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137748438] [2023-08-25 19:56:16,146 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 19:56:16,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:16,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:16,162 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 19:56:16,188 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 19:56:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:16,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-25 19:56:16,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:16,324 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 11 treesize of output 7 [2023-08-25 19:56:16,345 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 19:56:16,365 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 19:56:16,444 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 19:56:16,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:16,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137748438] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:16,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:16,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 4] total 12 [2023-08-25 19:56:16,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550474117] [2023-08-25 19:56:16,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:16,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 19:56:16,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:16,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 19:56:16,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-08-25 19:56:16,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 309 [2023-08-25 19:56:16,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 622 flow. Second operand has 14 states, 14 states have (on average 88.14285714285714) internal successors, (1234), 14 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states 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 19:56:16,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:16,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 309 [2023-08-25 19:56:16,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:16,947 INFO L124 PetriNetUnfolderBase]: 1310/2532 cut-off events. [2023-08-25 19:56:16,947 INFO L125 PetriNetUnfolderBase]: For 9155/9269 co-relation queries the response was YES. [2023-08-25 19:56:16,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9460 conditions, 2532 events. 1310/2532 cut-off events. For 9155/9269 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 16956 event pairs, 286 based on Foata normal form. 27/2544 useless extension candidates. Maximal degree in co-relation 9433. Up to 1777 conditions per place. [2023-08-25 19:56:16,965 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 95 selfloop transitions, 20 changer transitions 1/119 dead transitions. [2023-08-25 19:56:16,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 119 transitions, 1053 flow [2023-08-25 19:56:16,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 19:56:16,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 19:56:16,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 763 transitions. [2023-08-25 19:56:16,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3086569579288026 [2023-08-25 19:56:16,967 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 763 transitions. [2023-08-25 19:56:16,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 763 transitions. [2023-08-25 19:56:16,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:16,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 763 transitions. [2023-08-25 19:56:16,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.375) internal successors, (763), 8 states have internal predecessors, (763), 0 states have call successors, (0), 0 states 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 19:56:16,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 309.0) internal successors, (2781), 9 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states 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 19:56:16,972 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 309.0) internal successors, (2781), 9 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states 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 19:56:16,972 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 622 flow. Second operand 8 states and 763 transitions. [2023-08-25 19:56:16,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 119 transitions, 1053 flow [2023-08-25 19:56:16,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 119 transitions, 1006 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-08-25 19:56:16,983 INFO L231 Difference]: Finished difference. Result has 90 places, 77 transitions, 725 flow [2023-08-25 19:56:16,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=725, PETRI_PLACES=90, PETRI_TRANSITIONS=77} [2023-08-25 19:56:16,984 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2023-08-25 19:56:16,984 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 77 transitions, 725 flow [2023-08-25 19:56:16,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 88.14285714285714) internal successors, (1234), 14 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states 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 19:56:16,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:16,985 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:17,007 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 19:56:17,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 19:56:17,193 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:17,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:17,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1963074674, now seen corresponding path program 8 times [2023-08-25 19:56:17,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:17,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051539124] [2023-08-25 19:56:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:17,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:17,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:17,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:17,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051539124] [2023-08-25 19:56:17,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051539124] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:17,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266925911] [2023-08-25 19:56:17,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:56:17,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:17,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:17,297 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 19:56:17,300 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 19:56:17,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:56:17,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:17,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 19:56:17,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:17,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:17,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:17,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266925911] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:17,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:17,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-25 19:56:17,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894542521] [2023-08-25 19:56:17,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:17,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 19:56:17,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:17,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 19:56:17,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-08-25 19:56:17,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 309 [2023-08-25 19:56:17,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 77 transitions, 725 flow. Second operand has 14 states, 14 states have (on average 115.5) internal successors, (1617), 14 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states 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 19:56:17,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:17,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 309 [2023-08-25 19:56:17,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:17,822 INFO L124 PetriNetUnfolderBase]: 640/1838 cut-off events. [2023-08-25 19:56:17,822 INFO L125 PetriNetUnfolderBase]: For 5966/6033 co-relation queries the response was YES. [2023-08-25 19:56:17,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 1838 events. 640/1838 cut-off events. For 5966/6033 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14851 event pairs, 313 based on Foata normal form. 88/1882 useless extension candidates. Maximal degree in co-relation 5899. Up to 640 conditions per place. [2023-08-25 19:56:17,831 INFO L140 encePairwiseOnDemand]: 303/309 looper letters, 115 selfloop transitions, 16 changer transitions 0/147 dead transitions. [2023-08-25 19:56:17,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 147 transitions, 1658 flow [2023-08-25 19:56:17,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 19:56:17,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 19:56:17,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 838 transitions. [2023-08-25 19:56:17,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3874248728617661 [2023-08-25 19:56:17,833 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 838 transitions. [2023-08-25 19:56:17,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 838 transitions. [2023-08-25 19:56:17,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:17,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 838 transitions. [2023-08-25 19:56:17,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 states 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 19:56:17,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 19:56:17,837 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 19:56:17,837 INFO L175 Difference]: Start difference. First operand has 90 places, 77 transitions, 725 flow. Second operand 7 states and 838 transitions. [2023-08-25 19:56:17,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 147 transitions, 1658 flow [2023-08-25 19:56:17,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 147 transitions, 1531 flow, removed 54 selfloop flow, removed 3 redundant places. [2023-08-25 19:56:17,846 INFO L231 Difference]: Finished difference. Result has 97 places, 91 transitions, 919 flow [2023-08-25 19:56:17,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=919, PETRI_PLACES=97, PETRI_TRANSITIONS=91} [2023-08-25 19:56:17,847 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 47 predicate places. [2023-08-25 19:56:17,847 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 91 transitions, 919 flow [2023-08-25 19:56:17,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 115.5) internal successors, (1617), 14 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states 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 19:56:17,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:17,847 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:17,854 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 19:56:18,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-25 19:56:18,052 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:18,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:18,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1332142302, now seen corresponding path program 9 times [2023-08-25 19:56:18,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:18,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808932118] [2023-08-25 19:56:18,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:18,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:18,147 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:18,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:18,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808932118] [2023-08-25 19:56:18,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808932118] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:18,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312973648] [2023-08-25 19:56:18,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:56:18,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:18,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:18,148 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 19:56:18,170 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 19:56:18,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 19:56:18,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:18,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 19:56:18,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:18,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:18,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312973648] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:18,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:18,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-25 19:56:18,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165491817] [2023-08-25 19:56:18,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:18,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 19:56:18,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:18,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 19:56:18,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-08-25 19:56:18,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 309 [2023-08-25 19:56:18,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 91 transitions, 919 flow. Second operand has 14 states, 14 states have (on average 115.64285714285714) internal successors, (1619), 14 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states 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 19:56:18,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:18,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 309 [2023-08-25 19:56:18,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:18,677 INFO L124 PetriNetUnfolderBase]: 503/1490 cut-off events. [2023-08-25 19:56:18,677 INFO L125 PetriNetUnfolderBase]: For 4583/4642 co-relation queries the response was YES. [2023-08-25 19:56:18,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5016 conditions, 1490 events. 503/1490 cut-off events. For 4583/4642 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11807 event pairs, 268 based on Foata normal form. 64/1519 useless extension candidates. Maximal degree in co-relation 4980. Up to 642 conditions per place. [2023-08-25 19:56:18,685 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 60 selfloop transitions, 3 changer transitions 43/121 dead transitions. [2023-08-25 19:56:18,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 121 transitions, 1346 flow [2023-08-25 19:56:18,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 19:56:18,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 19:56:18,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 835 transitions. [2023-08-25 19:56:18,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.386037910309755 [2023-08-25 19:56:18,687 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 835 transitions. [2023-08-25 19:56:18,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 835 transitions. [2023-08-25 19:56:18,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:18,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 835 transitions. [2023-08-25 19:56:18,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.28571428571429) internal successors, (835), 7 states have internal predecessors, (835), 0 states have call successors, (0), 0 states 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 19:56:18,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 19:56:18,691 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states 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 19:56:18,691 INFO L175 Difference]: Start difference. First operand has 97 places, 91 transitions, 919 flow. Second operand 7 states and 835 transitions. [2023-08-25 19:56:18,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 121 transitions, 1346 flow [2023-08-25 19:56:18,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 121 transitions, 1330 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-25 19:56:18,699 INFO L231 Difference]: Finished difference. Result has 104 places, 78 transitions, 750 flow [2023-08-25 19:56:18,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=750, PETRI_PLACES=104, PETRI_TRANSITIONS=78} [2023-08-25 19:56:18,699 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 54 predicate places. [2023-08-25 19:56:18,699 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 78 transitions, 750 flow [2023-08-25 19:56:18,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 115.64285714285714) internal successors, (1619), 14 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states 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 19:56:18,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:18,700 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:18,707 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 19:56:18,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-25 19:56:18,905 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:18,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:18,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1001603506, now seen corresponding path program 10 times [2023-08-25 19:56:18,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:18,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268730487] [2023-08-25 19:56:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:18,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:19,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:19,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268730487] [2023-08-25 19:56:19,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268730487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:19,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975113493] [2023-08-25 19:56:19,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:56:19,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:19,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:19,003 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 19:56:19,005 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 19:56:19,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:56:19,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:19,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 19:56:19,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:19,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:19,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975113493] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:19,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:19,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-08-25 19:56:19,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298041195] [2023-08-25 19:56:19,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:19,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 19:56:19,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:19,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 19:56:19,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-08-25 19:56:19,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 309 [2023-08-25 19:56:19,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 78 transitions, 750 flow. Second operand has 15 states, 15 states have (on average 115.66666666666667) internal successors, (1735), 15 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states 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 19:56:19,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:19,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 309 [2023-08-25 19:56:19,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:19,483 INFO L124 PetriNetUnfolderBase]: 322/814 cut-off events. [2023-08-25 19:56:19,483 INFO L125 PetriNetUnfolderBase]: For 3914/3957 co-relation queries the response was YES. [2023-08-25 19:56:19,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3259 conditions, 814 events. 322/814 cut-off events. For 3914/3957 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5112 event pairs, 65 based on Foata normal form. 65/856 useless extension candidates. Maximal degree in co-relation 3220. Up to 236 conditions per place. [2023-08-25 19:56:19,493 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 51 selfloop transitions, 31 changer transitions 0/97 dead transitions. [2023-08-25 19:56:19,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 97 transitions, 1072 flow [2023-08-25 19:56:19,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 19:56:19,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 19:56:19,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1056 transitions. [2023-08-25 19:56:19,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37971952535059333 [2023-08-25 19:56:19,497 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1056 transitions. [2023-08-25 19:56:19,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1056 transitions. [2023-08-25 19:56:19,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:19,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1056 transitions. [2023-08-25 19:56:19,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.33333333333333) internal successors, (1056), 9 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states 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 19:56:19,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 309.0) internal successors, (3090), 10 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states 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 19:56:19,501 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 309.0) internal successors, (3090), 10 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states 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 19:56:19,501 INFO L175 Difference]: Start difference. First operand has 104 places, 78 transitions, 750 flow. Second operand 9 states and 1056 transitions. [2023-08-25 19:56:19,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 97 transitions, 1072 flow [2023-08-25 19:56:19,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 948 flow, removed 53 selfloop flow, removed 12 redundant places. [2023-08-25 19:56:19,510 INFO L231 Difference]: Finished difference. Result has 96 places, 81 transitions, 791 flow [2023-08-25 19:56:19,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=791, PETRI_PLACES=96, PETRI_TRANSITIONS=81} [2023-08-25 19:56:19,511 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 46 predicate places. [2023-08-25 19:56:19,512 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 81 transitions, 791 flow [2023-08-25 19:56:19,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 115.66666666666667) internal successors, (1735), 15 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states 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 19:56:19,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:19,512 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:19,517 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 19:56:19,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:19,718 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:19,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:19,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1030452, now seen corresponding path program 11 times [2023-08-25 19:56:19,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:19,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9944792] [2023-08-25 19:56:19,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:19,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:19,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:19,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9944792] [2023-08-25 19:56:19,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9944792] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:19,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175775958] [2023-08-25 19:56:19,811 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 19:56:19,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:19,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:19,812 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 19:56:19,813 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 19:56:20,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 19:56:20,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:20,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 19:56:20,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:20,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-25 19:56:20,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175775958] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:20,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:20,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2023-08-25 19:56:20,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954638424] [2023-08-25 19:56:20,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:20,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 19:56:20,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:20,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 19:56:20,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-08-25 19:56:20,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 309 [2023-08-25 19:56:20,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 81 transitions, 791 flow. Second operand has 15 states, 15 states have (on average 111.73333333333333) internal successors, (1676), 15 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states 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 19:56:20,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:20,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 309 [2023-08-25 19:56:20,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:20,547 INFO L124 PetriNetUnfolderBase]: 278/668 cut-off events. [2023-08-25 19:56:20,547 INFO L125 PetriNetUnfolderBase]: For 4201/4243 co-relation queries the response was YES. [2023-08-25 19:56:20,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2972 conditions, 668 events. 278/668 cut-off events. For 4201/4243 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3539 event pairs, 51 based on Foata normal form. 81/742 useless extension candidates. Maximal degree in co-relation 2940. Up to 215 conditions per place. [2023-08-25 19:56:20,552 INFO L140 encePairwiseOnDemand]: 299/309 looper letters, 70 selfloop transitions, 52 changer transitions 0/133 dead transitions. [2023-08-25 19:56:20,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 133 transitions, 1497 flow [2023-08-25 19:56:20,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 19:56:20,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 19:56:20,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1821 transitions. [2023-08-25 19:56:20,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3683252427184466 [2023-08-25 19:56:20,554 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1821 transitions. [2023-08-25 19:56:20,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1821 transitions. [2023-08-25 19:56:20,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:20,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1821 transitions. [2023-08-25 19:56:20,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 113.8125) internal successors, (1821), 16 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states 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 19:56:20,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 309.0) internal successors, (5253), 17 states have internal predecessors, (5253), 0 states have call successors, (0), 0 states 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 19:56:20,562 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 309.0) internal successors, (5253), 17 states have internal predecessors, (5253), 0 states have call successors, (0), 0 states 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 19:56:20,562 INFO L175 Difference]: Start difference. First operand has 96 places, 81 transitions, 791 flow. Second operand 16 states and 1821 transitions. [2023-08-25 19:56:20,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 133 transitions, 1497 flow [2023-08-25 19:56:20,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 133 transitions, 1424 flow, removed 34 selfloop flow, removed 3 redundant places. [2023-08-25 19:56:20,573 INFO L231 Difference]: Finished difference. Result has 110 places, 100 transitions, 1109 flow [2023-08-25 19:56:20,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1109, PETRI_PLACES=110, PETRI_TRANSITIONS=100} [2023-08-25 19:56:20,573 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 60 predicate places. [2023-08-25 19:56:20,573 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 100 transitions, 1109 flow [2023-08-25 19:56:20,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 111.73333333333333) internal successors, (1676), 15 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states 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 19:56:20,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:20,574 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:20,593 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 19:56:20,779 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,SelfDestructingSolverStorable19 [2023-08-25 19:56:20,781 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:20,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:20,781 INFO L85 PathProgramCache]: Analyzing trace with hash -966312682, now seen corresponding path program 12 times [2023-08-25 19:56:20,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:20,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643208989] [2023-08-25 19:56:20,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:20,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:21,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:21,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643208989] [2023-08-25 19:56:21,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643208989] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:21,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284472741] [2023-08-25 19:56:21,449 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 19:56:21,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:21,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:21,450 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 19:56:21,452 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 19:56:21,694 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 19:56:21,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:21,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 73 conjunts are in the unsatisfiable core [2023-08-25 19:56:21,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:21,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:22,113 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:22,113 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 42 treesize of output 45 [2023-08-25 19:56:22,164 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-25 19:56:22,164 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 43 treesize of output 18 [2023-08-25 19:56:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:22,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284472741] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:22,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:22,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 6] total 22 [2023-08-25 19:56:22,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416248641] [2023-08-25 19:56:22,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:22,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 19:56:22,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:22,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 19:56:22,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2023-08-25 19:56:22,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 19:56:22,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 100 transitions, 1109 flow. Second operand has 24 states, 24 states have (on average 99.20833333333333) internal successors, (2381), 24 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states 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 19:56:22,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:22,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 19:56:22,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:22,838 INFO L124 PetriNetUnfolderBase]: 451/1054 cut-off events. [2023-08-25 19:56:22,839 INFO L125 PetriNetUnfolderBase]: For 9061/9187 co-relation queries the response was YES. [2023-08-25 19:56:22,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 1054 events. 451/1054 cut-off events. For 9061/9187 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6068 event pairs, 34 based on Foata normal form. 18/1068 useless extension candidates. Maximal degree in co-relation 5139. Up to 474 conditions per place. [2023-08-25 19:56:22,845 INFO L140 encePairwiseOnDemand]: 299/309 looper letters, 140 selfloop transitions, 46 changer transitions 2/199 dead transitions. [2023-08-25 19:56:22,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 199 transitions, 2338 flow [2023-08-25 19:56:22,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 19:56:22,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 19:56:22,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2163 transitions. [2023-08-25 19:56:22,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2023-08-25 19:56:22,848 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2163 transitions. [2023-08-25 19:56:22,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2163 transitions. [2023-08-25 19:56:22,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:22,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2163 transitions. [2023-08-25 19:56:22,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 103.0) internal successors, (2163), 21 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states 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 19:56:22,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 309.0) internal successors, (6798), 22 states have internal predecessors, (6798), 0 states have call successors, (0), 0 states 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 19:56:22,855 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 309.0) internal successors, (6798), 22 states have internal predecessors, (6798), 0 states have call successors, (0), 0 states 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 19:56:22,855 INFO L175 Difference]: Start difference. First operand has 110 places, 100 transitions, 1109 flow. Second operand 21 states and 2163 transitions. [2023-08-25 19:56:22,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 199 transitions, 2338 flow [2023-08-25 19:56:22,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 199 transitions, 2044 flow, removed 118 selfloop flow, removed 8 redundant places. [2023-08-25 19:56:22,870 INFO L231 Difference]: Finished difference. Result has 128 places, 130 transitions, 1536 flow [2023-08-25 19:56:22,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1536, PETRI_PLACES=128, PETRI_TRANSITIONS=130} [2023-08-25 19:56:22,871 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 78 predicate places. [2023-08-25 19:56:22,871 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 130 transitions, 1536 flow [2023-08-25 19:56:22,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 99.20833333333333) internal successors, (2381), 24 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states 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 19:56:22,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:22,872 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:22,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-25 19:56:23,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:23,079 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:23,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:23,080 INFO L85 PathProgramCache]: Analyzing trace with hash 240182364, now seen corresponding path program 13 times [2023-08-25 19:56:23,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:23,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19399] [2023-08-25 19:56:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:23,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:23,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:23,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19399] [2023-08-25 19:56:23,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19399] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:23,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267919564] [2023-08-25 19:56:23,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 19:56:23,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:23,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:23,947 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 19:56:23,949 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 19:56:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:24,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 69 conjunts are in the unsatisfiable core [2023-08-25 19:56:24,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:24,289 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:24,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:24,373 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:24,373 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 42 treesize of output 45 [2023-08-25 19:56:24,454 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:24,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267919564] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:24,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:24,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 6] total 24 [2023-08-25 19:56:24,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398158077] [2023-08-25 19:56:24,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:24,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 19:56:24,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:24,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 19:56:24,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2023-08-25 19:56:24,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 19:56:24,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 130 transitions, 1536 flow. Second operand has 26 states, 26 states have (on average 80.34615384615384) internal successors, (2089), 26 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states 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 19:56:24,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:24,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 19:56:24,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:26,297 INFO L124 PetriNetUnfolderBase]: 2113/4032 cut-off events. [2023-08-25 19:56:26,297 INFO L125 PetriNetUnfolderBase]: For 29607/29927 co-relation queries the response was YES. [2023-08-25 19:56:26,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19632 conditions, 4032 events. 2113/4032 cut-off events. For 29607/29927 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 26296 event pairs, 64 based on Foata normal form. 134/4166 useless extension candidates. Maximal degree in co-relation 19593. Up to 1704 conditions per place. [2023-08-25 19:56:26,329 INFO L140 encePairwiseOnDemand]: 298/309 looper letters, 235 selfloop transitions, 133 changer transitions 6/377 dead transitions. [2023-08-25 19:56:26,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 377 transitions, 3723 flow [2023-08-25 19:56:26,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 19:56:26,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 19:56:26,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2521 transitions. [2023-08-25 19:56:26,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2813302086820667 [2023-08-25 19:56:26,332 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2521 transitions. [2023-08-25 19:56:26,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2521 transitions. [2023-08-25 19:56:26,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:26,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2521 transitions. [2023-08-25 19:56:26,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 86.93103448275862) internal successors, (2521), 29 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states 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 19:56:26,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 309.0) internal successors, (9270), 30 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states 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 19:56:26,343 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 309.0) internal successors, (9270), 30 states have internal predecessors, (9270), 0 states have call successors, (0), 0 states 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 19:56:26,343 INFO L175 Difference]: Start difference. First operand has 128 places, 130 transitions, 1536 flow. Second operand 29 states and 2521 transitions. [2023-08-25 19:56:26,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 377 transitions, 3723 flow [2023-08-25 19:56:26,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 377 transitions, 3451 flow, removed 116 selfloop flow, removed 7 redundant places. [2023-08-25 19:56:26,378 INFO L231 Difference]: Finished difference. Result has 159 places, 207 transitions, 2775 flow [2023-08-25 19:56:26,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2775, PETRI_PLACES=159, PETRI_TRANSITIONS=207} [2023-08-25 19:56:26,379 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 109 predicate places. [2023-08-25 19:56:26,379 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 207 transitions, 2775 flow [2023-08-25 19:56:26,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 80.34615384615384) internal successors, (2089), 26 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states 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 19:56:26,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:26,379 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:26,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-25 19:56:26,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:26,584 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:26,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:26,585 INFO L85 PathProgramCache]: Analyzing trace with hash -2080232864, now seen corresponding path program 14 times [2023-08-25 19:56:26,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:26,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267507437] [2023-08-25 19:56:26,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:26,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:27,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267507437] [2023-08-25 19:56:27,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267507437] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831376841] [2023-08-25 19:56:27,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:56:27,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:27,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:27,269 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 19:56:27,296 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 19:56:27,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:56:27,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:27,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 69 conjunts are in the unsatisfiable core [2023-08-25 19:56:27,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:27,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:27,803 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:27,803 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 42 treesize of output 45 [2023-08-25 19:56:27,853 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-25 19:56:27,854 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 43 treesize of output 18 [2023-08-25 19:56:27,929 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:27,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831376841] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:27,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:27,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 6] total 23 [2023-08-25 19:56:27,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937651886] [2023-08-25 19:56:27,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:27,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 19:56:27,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:27,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 19:56:27,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2023-08-25 19:56:27,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 19:56:27,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 207 transitions, 2775 flow. Second operand has 25 states, 25 states have (on average 99.12) internal successors, (2478), 25 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states 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 19:56:27,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:27,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 19:56:27,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:29,111 INFO L124 PetriNetUnfolderBase]: 789/1814 cut-off events. [2023-08-25 19:56:29,111 INFO L125 PetriNetUnfolderBase]: For 16075/16175 co-relation queries the response was YES. [2023-08-25 19:56:29,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9597 conditions, 1814 events. 789/1814 cut-off events. For 16075/16175 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 11522 event pairs, 22 based on Foata normal form. 44/1858 useless extension candidates. Maximal degree in co-relation 9548. Up to 791 conditions per place. [2023-08-25 19:56:29,127 INFO L140 encePairwiseOnDemand]: 298/309 looper letters, 157 selfloop transitions, 150 changer transitions 4/322 dead transitions. [2023-08-25 19:56:29,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 322 transitions, 4578 flow [2023-08-25 19:56:29,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-25 19:56:29,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-25 19:56:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2555 transitions. [2023-08-25 19:56:29,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307443365695793 [2023-08-25 19:56:29,132 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2555 transitions. [2023-08-25 19:56:29,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2555 transitions. [2023-08-25 19:56:29,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:29,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2555 transitions. [2023-08-25 19:56:29,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 102.2) internal successors, (2555), 25 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states 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 19:56:29,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 309.0) internal successors, (8034), 26 states have internal predecessors, (8034), 0 states have call successors, (0), 0 states 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 19:56:29,140 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 309.0) internal successors, (8034), 26 states have internal predecessors, (8034), 0 states have call successors, (0), 0 states 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 19:56:29,140 INFO L175 Difference]: Start difference. First operand has 159 places, 207 transitions, 2775 flow. Second operand 25 states and 2555 transitions. [2023-08-25 19:56:29,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 322 transitions, 4578 flow [2023-08-25 19:56:29,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 322 transitions, 4170 flow, removed 170 selfloop flow, removed 12 redundant places. [2023-08-25 19:56:29,177 INFO L231 Difference]: Finished difference. Result has 180 places, 262 transitions, 3904 flow [2023-08-25 19:56:29,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=2478, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3904, PETRI_PLACES=180, PETRI_TRANSITIONS=262} [2023-08-25 19:56:29,178 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 130 predicate places. [2023-08-25 19:56:29,178 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 262 transitions, 3904 flow [2023-08-25 19:56:29,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 99.12) internal successors, (2478), 25 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states 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 19:56:29,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:29,178 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:29,183 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 19:56:29,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-25 19:56:29,383 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:29,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:29,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1843564592, now seen corresponding path program 15 times [2023-08-25 19:56:29,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:29,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437106264] [2023-08-25 19:56:29,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:29,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:29,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:29,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437106264] [2023-08-25 19:56:29,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437106264] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:29,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459136946] [2023-08-25 19:56:29,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:56:29,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:29,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:29,918 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 19:56:29,920 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 19:56:30,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 19:56:30,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:30,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 81 conjunts are in the unsatisfiable core [2023-08-25 19:56:30,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:30,852 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 19:56:30,854 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:30,854 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 15 treesize of output 9 [2023-08-25 19:56:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:30,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:31,053 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:31,053 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 41 treesize of output 53 [2023-08-25 19:56:31,385 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:31,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459136946] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:31,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:31,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 32 [2023-08-25 19:56:31,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099816940] [2023-08-25 19:56:31,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:31,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-25 19:56:31,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:31,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-25 19:56:31,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=956, Unknown=0, NotChecked=0, Total=1122 [2023-08-25 19:56:31,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 19:56:31,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 262 transitions, 3904 flow. Second operand has 34 states, 34 states have (on average 98.61764705882354) internal successors, (3353), 34 states have internal predecessors, (3353), 0 states have call successors, (0), 0 states 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 19:56:31,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:31,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 19:56:31,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:32,839 INFO L124 PetriNetUnfolderBase]: 866/2068 cut-off events. [2023-08-25 19:56:32,839 INFO L125 PetriNetUnfolderBase]: For 20794/20909 co-relation queries the response was YES. [2023-08-25 19:56:32,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11486 conditions, 2068 events. 866/2068 cut-off events. For 20794/20909 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 13988 event pairs, 36 based on Foata normal form. 53/2121 useless extension candidates. Maximal degree in co-relation 11430. Up to 1076 conditions per place. [2023-08-25 19:56:32,856 INFO L140 encePairwiseOnDemand]: 298/309 looper letters, 167 selfloop transitions, 170 changer transitions 8/356 dead transitions. [2023-08-25 19:56:32,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 356 transitions, 5514 flow [2023-08-25 19:56:32,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-25 19:56:32,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-25 19:56:32,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3044 transitions. [2023-08-25 19:56:32,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3283710895361381 [2023-08-25 19:56:32,860 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3044 transitions. [2023-08-25 19:56:32,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3044 transitions. [2023-08-25 19:56:32,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:32,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3044 transitions. [2023-08-25 19:56:32,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 101.46666666666667) internal successors, (3044), 30 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states 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 19:56:32,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 309.0) internal successors, (9579), 31 states have internal predecessors, (9579), 0 states have call successors, (0), 0 states 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 19:56:32,870 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 309.0) internal successors, (9579), 31 states have internal predecessors, (9579), 0 states have call successors, (0), 0 states 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 19:56:32,870 INFO L175 Difference]: Start difference. First operand has 180 places, 262 transitions, 3904 flow. Second operand 30 states and 3044 transitions. [2023-08-25 19:56:32,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 356 transitions, 5514 flow [2023-08-25 19:56:32,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 356 transitions, 5211 flow, removed 116 selfloop flow, removed 13 redundant places. [2023-08-25 19:56:32,922 INFO L231 Difference]: Finished difference. Result has 201 places, 305 transitions, 4944 flow [2023-08-25 19:56:32,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=3670, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4944, PETRI_PLACES=201, PETRI_TRANSITIONS=305} [2023-08-25 19:56:32,922 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 151 predicate places. [2023-08-25 19:56:32,922 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 305 transitions, 4944 flow [2023-08-25 19:56:32,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 98.61764705882354) internal successors, (3353), 34 states have internal predecessors, (3353), 0 states have call successors, (0), 0 states 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 19:56:32,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:32,923 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:32,931 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 19:56:33,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:33,129 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:33,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:33,129 INFO L85 PathProgramCache]: Analyzing trace with hash -513478452, now seen corresponding path program 16 times [2023-08-25 19:56:33,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:33,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223222963] [2023-08-25 19:56:33,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:33,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:33,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:33,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223222963] [2023-08-25 19:56:33,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223222963] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:33,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672572949] [2023-08-25 19:56:33,586 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:56:33,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:33,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:33,601 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 19:56:33,638 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 19:56:33,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:56:33,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:33,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 77 conjunts are in the unsatisfiable core [2023-08-25 19:56:33,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:34,059 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:34,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:34,192 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-25 19:56:34,193 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 41 treesize of output 45 [2023-08-25 19:56:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:34,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672572949] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:34,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:34,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 25 [2023-08-25 19:56:34,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329800947] [2023-08-25 19:56:34,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:34,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-25 19:56:34,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:34,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-25 19:56:34,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2023-08-25 19:56:34,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 19:56:34,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 305 transitions, 4944 flow. Second operand has 27 states, 27 states have (on average 98.85185185185185) internal successors, (2669), 27 states have internal predecessors, (2669), 0 states have call successors, (0), 0 states 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 19:56:34,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:34,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 19:56:34,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:35,534 INFO L124 PetriNetUnfolderBase]: 1040/2549 cut-off events. [2023-08-25 19:56:35,534 INFO L125 PetriNetUnfolderBase]: For 28675/28804 co-relation queries the response was YES. [2023-08-25 19:56:35,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14740 conditions, 2549 events. 1040/2549 cut-off events. For 28675/28804 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18453 event pairs, 80 based on Foata normal form. 46/2594 useless extension candidates. Maximal degree in co-relation 14679. Up to 1418 conditions per place. [2023-08-25 19:56:35,555 INFO L140 encePairwiseOnDemand]: 298/309 looper letters, 296 selfloop transitions, 111 changer transitions 7/425 dead transitions. [2023-08-25 19:56:35,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 425 transitions, 7190 flow [2023-08-25 19:56:35,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 19:56:35,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 19:56:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2665 transitions. [2023-08-25 19:56:35,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33171521035598706 [2023-08-25 19:56:35,564 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2665 transitions. [2023-08-25 19:56:35,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2665 transitions. [2023-08-25 19:56:35,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:35,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2665 transitions. [2023-08-25 19:56:35,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 102.5) internal successors, (2665), 26 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states 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 19:56:35,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 309.0) internal successors, (8343), 27 states have internal predecessors, (8343), 0 states have call successors, (0), 0 states 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 19:56:35,576 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 309.0) internal successors, (8343), 27 states have internal predecessors, (8343), 0 states have call successors, (0), 0 states 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 19:56:35,576 INFO L175 Difference]: Start difference. First operand has 201 places, 305 transitions, 4944 flow. Second operand 26 states and 2665 transitions. [2023-08-25 19:56:35,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 425 transitions, 7190 flow [2023-08-25 19:56:35,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 425 transitions, 6998 flow, removed 53 selfloop flow, removed 17 redundant places. [2023-08-25 19:56:35,645 INFO L231 Difference]: Finished difference. Result has 216 places, 358 transitions, 6114 flow [2023-08-25 19:56:35,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=4778, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6114, PETRI_PLACES=216, PETRI_TRANSITIONS=358} [2023-08-25 19:56:35,646 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 166 predicate places. [2023-08-25 19:56:35,646 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 358 transitions, 6114 flow [2023-08-25 19:56:35,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 98.85185185185185) internal successors, (2669), 27 states have internal predecessors, (2669), 0 states have call successors, (0), 0 states 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 19:56:35,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:35,647 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:35,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-25 19:56:35,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:35,853 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:35,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:35,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1428895812, now seen corresponding path program 17 times [2023-08-25 19:56:35,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:35,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557700197] [2023-08-25 19:56:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:35,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:36,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:36,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557700197] [2023-08-25 19:56:36,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557700197] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:36,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255290375] [2023-08-25 19:56:36,479 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 19:56:36,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:36,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:36,480 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 19:56:36,509 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 19:56:36,868 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 19:56:36,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:36,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 71 conjunts are in the unsatisfiable core [2023-08-25 19:56:36,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:37,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:37,140 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:37,140 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 42 treesize of output 45 [2023-08-25 19:56:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:37,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255290375] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:37,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:37,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 6] total 17 [2023-08-25 19:56:37,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297667924] [2023-08-25 19:56:37,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:37,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 19:56:37,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:37,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 19:56:37,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-08-25 19:56:37,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 309 [2023-08-25 19:56:37,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 358 transitions, 6114 flow. Second operand has 19 states, 19 states have (on average 87.6842105263158) internal successors, (1666), 19 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states 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 19:56:37,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:37,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 309 [2023-08-25 19:56:37,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:38,799 INFO L124 PetriNetUnfolderBase]: 4136/7942 cut-off events. [2023-08-25 19:56:38,800 INFO L125 PetriNetUnfolderBase]: For 112161/112559 co-relation queries the response was YES. [2023-08-25 19:56:38,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52102 conditions, 7942 events. 4136/7942 cut-off events. For 112161/112559 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 59047 event pairs, 334 based on Foata normal form. 116/8057 useless extension candidates. Maximal degree in co-relation 52033. Up to 5473 conditions per place. [2023-08-25 19:56:38,873 INFO L140 encePairwiseOnDemand]: 300/309 looper letters, 397 selfloop transitions, 102 changer transitions 4/506 dead transitions. [2023-08-25 19:56:38,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 506 transitions, 8669 flow [2023-08-25 19:56:38,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 19:56:38,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 19:56:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1516 transitions. [2023-08-25 19:56:38,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30663430420711973 [2023-08-25 19:56:38,875 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1516 transitions. [2023-08-25 19:56:38,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1516 transitions. [2023-08-25 19:56:38,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:38,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1516 transitions. [2023-08-25 19:56:38,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.75) internal successors, (1516), 16 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states 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 19:56:38,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 309.0) internal successors, (5253), 17 states have internal predecessors, (5253), 0 states have call successors, (0), 0 states 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 19:56:38,879 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 309.0) internal successors, (5253), 17 states have internal predecessors, (5253), 0 states have call successors, (0), 0 states 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 19:56:38,879 INFO L175 Difference]: Start difference. First operand has 216 places, 358 transitions, 6114 flow. Second operand 16 states and 1516 transitions. [2023-08-25 19:56:38,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 506 transitions, 8669 flow [2023-08-25 19:56:39,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 506 transitions, 8265 flow, removed 163 selfloop flow, removed 18 redundant places. [2023-08-25 19:56:39,199 INFO L231 Difference]: Finished difference. Result has 219 places, 403 transitions, 7039 flow [2023-08-25 19:56:39,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=5798, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7039, PETRI_PLACES=219, PETRI_TRANSITIONS=403} [2023-08-25 19:56:39,200 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 169 predicate places. [2023-08-25 19:56:39,200 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 403 transitions, 7039 flow [2023-08-25 19:56:39,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 87.6842105263158) internal successors, (1666), 19 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states 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 19:56:39,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:39,200 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:39,206 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 19:56:39,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:39,406 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:39,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:39,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1762107898, now seen corresponding path program 18 times [2023-08-25 19:56:39,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:39,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065500650] [2023-08-25 19:56:39,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:39,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:40,021 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:40,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:40,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065500650] [2023-08-25 19:56:40,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065500650] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:40,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433462583] [2023-08-25 19:56:40,022 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 19:56:40,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:40,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:40,023 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 19:56:40,027 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 19:56:40,323 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 19:56:40,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:40,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 73 conjunts are in the unsatisfiable core [2023-08-25 19:56:40,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:40,495 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 19:56:40,496 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:40,496 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 31 treesize of output 14 [2023-08-25 19:56:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:40,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:40,654 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:40,655 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 36 treesize of output 44 [2023-08-25 19:56:40,735 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:40,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433462583] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:40,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:40,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 6] total 22 [2023-08-25 19:56:40,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441699230] [2023-08-25 19:56:40,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:40,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 19:56:40,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:40,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 19:56:40,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2023-08-25 19:56:40,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 19:56:40,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 403 transitions, 7039 flow. Second operand has 24 states, 24 states have (on average 80.75) internal successors, (1938), 24 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states 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 19:56:40,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:40,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 19:56:40,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:42,669 INFO L124 PetriNetUnfolderBase]: 4393/8434 cut-off events. [2023-08-25 19:56:42,669 INFO L125 PetriNetUnfolderBase]: For 122399/122743 co-relation queries the response was YES. [2023-08-25 19:56:42,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56229 conditions, 8434 events. 4393/8434 cut-off events. For 122399/122743 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 63767 event pairs, 322 based on Foata normal form. 99/8526 useless extension candidates. Maximal degree in co-relation 56155. Up to 6365 conditions per place. [2023-08-25 19:56:42,742 INFO L140 encePairwiseOnDemand]: 300/309 looper letters, 449 selfloop transitions, 55 changer transitions 1/508 dead transitions. [2023-08-25 19:56:42,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 508 transitions, 8821 flow [2023-08-25 19:56:42,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 19:56:42,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 19:56:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1234 transitions. [2023-08-25 19:56:42,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28525196486361537 [2023-08-25 19:56:42,744 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1234 transitions. [2023-08-25 19:56:42,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1234 transitions. [2023-08-25 19:56:42,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:42,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1234 transitions. [2023-08-25 19:56:42,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 88.14285714285714) internal successors, (1234), 14 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states 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 19:56:42,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 309.0) internal successors, (4635), 15 states have internal predecessors, (4635), 0 states have call successors, (0), 0 states 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 19:56:42,747 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 309.0) internal successors, (4635), 15 states have internal predecessors, (4635), 0 states have call successors, (0), 0 states 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 19:56:42,747 INFO L175 Difference]: Start difference. First operand has 219 places, 403 transitions, 7039 flow. Second operand 14 states and 1234 transitions. [2023-08-25 19:56:42,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 508 transitions, 8821 flow [2023-08-25 19:56:43,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 508 transitions, 8533 flow, removed 108 selfloop flow, removed 9 redundant places. [2023-08-25 19:56:43,225 INFO L231 Difference]: Finished difference. Result has 226 places, 416 transitions, 7253 flow [2023-08-25 19:56:43,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=6751, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7253, PETRI_PLACES=226, PETRI_TRANSITIONS=416} [2023-08-25 19:56:43,226 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 176 predicate places. [2023-08-25 19:56:43,226 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 416 transitions, 7253 flow [2023-08-25 19:56:43,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 80.75) internal successors, (1938), 24 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states 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 19:56:43,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:43,226 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:43,233 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 19:56:43,431 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,SelfDestructingSolverStorable26 [2023-08-25 19:56:43,431 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:43,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:43,432 INFO L85 PathProgramCache]: Analyzing trace with hash -723606826, now seen corresponding path program 19 times [2023-08-25 19:56:43,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:43,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438336011] [2023-08-25 19:56:43,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:43,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:44,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:44,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438336011] [2023-08-25 19:56:44,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438336011] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:44,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266464107] [2023-08-25 19:56:44,006 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 19:56:44,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:44,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:44,007 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 19:56:44,010 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 19:56:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:44,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 73 conjunts are in the unsatisfiable core [2023-08-25 19:56:44,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:44,421 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:44,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:44,578 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:44,578 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 36 treesize of output 44 [2023-08-25 19:56:44,648 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:44,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266464107] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:44,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:44,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 6] total 23 [2023-08-25 19:56:44,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080547026] [2023-08-25 19:56:44,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:44,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 19:56:44,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:44,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 19:56:44,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2023-08-25 19:56:44,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 19:56:44,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 416 transitions, 7253 flow. Second operand has 25 states, 25 states have (on average 99.12) internal successors, (2478), 25 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states 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 19:56:44,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:44,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 19:56:44,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:45,776 INFO L124 PetriNetUnfolderBase]: 1357/3315 cut-off events. [2023-08-25 19:56:45,776 INFO L125 PetriNetUnfolderBase]: For 44310/44426 co-relation queries the response was YES. [2023-08-25 19:56:45,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20603 conditions, 3315 events. 1357/3315 cut-off events. For 44310/44426 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 25872 event pairs, 129 based on Foata normal form. 49/3361 useless extension candidates. Maximal degree in co-relation 20526. Up to 2030 conditions per place. [2023-08-25 19:56:45,806 INFO L140 encePairwiseOnDemand]: 298/309 looper letters, 396 selfloop transitions, 89 changer transitions 3/499 dead transitions. [2023-08-25 19:56:45,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 499 transitions, 9317 flow [2023-08-25 19:56:45,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-25 19:56:45,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-25 19:56:45,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1951 transitions. [2023-08-25 19:56:45,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3323113609265883 [2023-08-25 19:56:45,808 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1951 transitions. [2023-08-25 19:56:45,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1951 transitions. [2023-08-25 19:56:45,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:45,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1951 transitions. [2023-08-25 19:56:45,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 102.6842105263158) internal successors, (1951), 19 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states 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 19:56:45,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 309.0) internal successors, (6180), 20 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states 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 19:56:45,814 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 309.0) internal successors, (6180), 20 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states 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 19:56:45,814 INFO L175 Difference]: Start difference. First operand has 226 places, 416 transitions, 7253 flow. Second operand 19 states and 1951 transitions. [2023-08-25 19:56:45,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 499 transitions, 9317 flow [2023-08-25 19:56:45,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 499 transitions, 9129 flow, removed 68 selfloop flow, removed 8 redundant places. [2023-08-25 19:56:45,988 INFO L231 Difference]: Finished difference. Result has 241 places, 445 transitions, 8004 flow [2023-08-25 19:56:45,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=7065, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8004, PETRI_PLACES=241, PETRI_TRANSITIONS=445} [2023-08-25 19:56:45,989 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 191 predicate places. [2023-08-25 19:56:45,989 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 445 transitions, 8004 flow [2023-08-25 19:56:45,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 99.12) internal successors, (2478), 25 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states 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 19:56:45,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:45,989 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:45,994 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 19:56:46,193 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,SelfDestructingSolverStorable27 [2023-08-25 19:56:46,193 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:46,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:46,193 INFO L85 PathProgramCache]: Analyzing trace with hash 735907144, now seen corresponding path program 20 times [2023-08-25 19:56:46,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:46,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377945415] [2023-08-25 19:56:46,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:46,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:46,702 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:46,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:46,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377945415] [2023-08-25 19:56:46,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377945415] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:46,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743614969] [2023-08-25 19:56:46,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:56:46,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:46,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:46,703 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 19:56:46,733 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 19:56:46,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:56:46,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:46,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 69 conjunts are in the unsatisfiable core [2023-08-25 19:56:46,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:47,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:47,197 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:47,198 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 35 treesize of output 43 [2023-08-25 19:56:47,248 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:47,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743614969] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:47,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:47,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 6] total 22 [2023-08-25 19:56:47,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86519659] [2023-08-25 19:56:47,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:47,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 19:56:47,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:47,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 19:56:47,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2023-08-25 19:56:47,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 19:56:47,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 445 transitions, 8004 flow. Second operand has 24 states, 24 states have (on average 99.25) internal successors, (2382), 24 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states 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 19:56:47,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:47,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 19:56:47,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:48,592 INFO L124 PetriNetUnfolderBase]: 1445/3544 cut-off events. [2023-08-25 19:56:48,592 INFO L125 PetriNetUnfolderBase]: For 50785/50895 co-relation queries the response was YES. [2023-08-25 19:56:48,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22479 conditions, 3544 events. 1445/3544 cut-off events. For 50785/50895 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 27957 event pairs, 155 based on Foata normal form. 56/3596 useless extension candidates. Maximal degree in co-relation 22396. Up to 2119 conditions per place. [2023-08-25 19:56:48,623 INFO L140 encePairwiseOnDemand]: 298/309 looper letters, 384 selfloop transitions, 128 changer transitions 6/529 dead transitions. [2023-08-25 19:56:48,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 529 transitions, 10211 flow [2023-08-25 19:56:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 19:56:48,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 19:56:48,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2156 transitions. [2023-08-25 19:56:48,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225458468176916 [2023-08-25 19:56:48,626 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2156 transitions. [2023-08-25 19:56:48,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2156 transitions. [2023-08-25 19:56:48,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:48,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2156 transitions. [2023-08-25 19:56:48,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 102.66666666666667) internal successors, (2156), 21 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states 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 19:56:48,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 309.0) internal successors, (6798), 22 states have internal predecessors, (6798), 0 states have call successors, (0), 0 states 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 19:56:48,632 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 309.0) internal successors, (6798), 22 states have internal predecessors, (6798), 0 states have call successors, (0), 0 states 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 19:56:48,632 INFO L175 Difference]: Start difference. First operand has 241 places, 445 transitions, 8004 flow. Second operand 21 states and 2156 transitions. [2023-08-25 19:56:48,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 529 transitions, 10211 flow [2023-08-25 19:56:48,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 529 transitions, 9954 flow, removed 93 selfloop flow, removed 12 redundant places. [2023-08-25 19:56:48,790 INFO L231 Difference]: Finished difference. Result has 253 places, 469 transitions, 8743 flow [2023-08-25 19:56:48,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=7747, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8743, PETRI_PLACES=253, PETRI_TRANSITIONS=469} [2023-08-25 19:56:48,791 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 203 predicate places. [2023-08-25 19:56:48,791 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 469 transitions, 8743 flow [2023-08-25 19:56:48,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 99.25) internal successors, (2382), 24 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states 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 19:56:48,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:48,792 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:48,797 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 19:56:48,997 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,SelfDestructingSolverStorable28 [2023-08-25 19:56:48,997 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:48,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash -282698020, now seen corresponding path program 21 times [2023-08-25 19:56:48,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:48,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448760760] [2023-08-25 19:56:48,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:48,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:49,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:49,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448760760] [2023-08-25 19:56:49,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448760760] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:49,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096549072] [2023-08-25 19:56:49,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:56:49,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:49,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:49,478 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 19:56:49,480 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 19:56:49,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 19:56:49,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:49,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-25 19:56:49,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:50,108 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:50,109 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 17 treesize of output 14 [2023-08-25 19:56:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:50,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:50,770 INFO L322 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2023-08-25 19:56:50,770 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 37 treesize of output 38 [2023-08-25 19:56:50,788 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 19:56:50,788 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 21 treesize of output 10 [2023-08-25 19:56:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:56:50,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096549072] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:50,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:50,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 30 [2023-08-25 19:56:50,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031784912] [2023-08-25 19:56:50,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:50,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 19:56:50,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:50,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 19:56:50,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2023-08-25 19:56:50,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 19:56:50,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 469 transitions, 8743 flow. Second operand has 32 states, 32 states have (on average 98.875) internal successors, (3164), 32 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states 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 19:56:50,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:50,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 19:56:50,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:53,238 INFO L124 PetriNetUnfolderBase]: 1589/3880 cut-off events. [2023-08-25 19:56:53,238 INFO L125 PetriNetUnfolderBase]: For 57671/57774 co-relation queries the response was YES. [2023-08-25 19:56:53,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25154 conditions, 3880 events. 1589/3880 cut-off events. For 57671/57774 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 31335 event pairs, 54 based on Foata normal form. 37/3914 useless extension candidates. Maximal degree in co-relation 25066. Up to 1850 conditions per place. [2023-08-25 19:56:53,276 INFO L140 encePairwiseOnDemand]: 297/309 looper letters, 285 selfloop transitions, 308 changer transitions 2/606 dead transitions. [2023-08-25 19:56:53,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 606 transitions, 11576 flow [2023-08-25 19:56:53,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-25 19:56:53,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-25 19:56:53,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3360 transitions. [2023-08-25 19:56:53,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32950867902324216 [2023-08-25 19:56:53,279 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3360 transitions. [2023-08-25 19:56:53,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3360 transitions. [2023-08-25 19:56:53,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:53,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3360 transitions. [2023-08-25 19:56:53,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 101.81818181818181) internal successors, (3360), 33 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states 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 19:56:53,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 309.0) internal successors, (10506), 34 states have internal predecessors, (10506), 0 states have call successors, (0), 0 states 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 19:56:53,287 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 309.0) internal successors, (10506), 34 states have internal predecessors, (10506), 0 states have call successors, (0), 0 states 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 19:56:53,287 INFO L175 Difference]: Start difference. First operand has 253 places, 469 transitions, 8743 flow. Second operand 33 states and 3360 transitions. [2023-08-25 19:56:53,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 606 transitions, 11576 flow [2023-08-25 19:56:53,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 606 transitions, 11230 flow, removed 109 selfloop flow, removed 16 redundant places. [2023-08-25 19:56:53,482 INFO L231 Difference]: Finished difference. Result has 277 places, 537 transitions, 10717 flow [2023-08-25 19:56:53,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=8416, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=10717, PETRI_PLACES=277, PETRI_TRANSITIONS=537} [2023-08-25 19:56:53,483 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 227 predicate places. [2023-08-25 19:56:53,483 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 537 transitions, 10717 flow [2023-08-25 19:56:53,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 98.875) internal successors, (3164), 32 states have internal predecessors, (3164), 0 states have call successors, (0), 0 states 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 19:56:53,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:53,484 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:53,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-25 19:56:53,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:53,689 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:53,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:53,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1386041324, now seen corresponding path program 22 times [2023-08-25 19:56:53,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:53,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15238445] [2023-08-25 19:56:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:53,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:54,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:54,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15238445] [2023-08-25 19:56:54,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15238445] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:54,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425273692] [2023-08-25 19:56:54,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:56:54,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:54,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:54,292 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 19:56:54,294 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 19:56:54,497 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:56:54,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:54,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 77 conjunts are in the unsatisfiable core [2023-08-25 19:56:54,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:54,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:54,968 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-25 19:56:54,968 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 84 treesize of output 55 [2023-08-25 19:56:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:55,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425273692] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:55,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:55,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 28 [2023-08-25 19:56:55,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547549190] [2023-08-25 19:56:55,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:55,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-25 19:56:55,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:55,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-25 19:56:55,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2023-08-25 19:56:55,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 19:56:55,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 537 transitions, 10717 flow. Second operand has 30 states, 30 states have (on average 98.93333333333334) internal successors, (2968), 30 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states 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 19:56:55,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:55,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 19:56:55,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:56:57,131 INFO L124 PetriNetUnfolderBase]: 1758/4301 cut-off events. [2023-08-25 19:56:57,131 INFO L125 PetriNetUnfolderBase]: For 78003/78191 co-relation queries the response was YES. [2023-08-25 19:56:57,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30308 conditions, 4301 events. 1758/4301 cut-off events. For 78003/78191 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 35744 event pairs, 205 based on Foata normal form. 45/4339 useless extension candidates. Maximal degree in co-relation 30213. Up to 2679 conditions per place. [2023-08-25 19:56:57,177 INFO L140 encePairwiseOnDemand]: 299/309 looper letters, 538 selfloop transitions, 96 changer transitions 1/646 dead transitions. [2023-08-25 19:56:57,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 646 transitions, 14020 flow [2023-08-25 19:56:57,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-25 19:56:57,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-25 19:56:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2348 transitions. [2023-08-25 19:56:57,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303785000703532 [2023-08-25 19:56:57,181 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2348 transitions. [2023-08-25 19:56:57,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2348 transitions. [2023-08-25 19:56:57,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:56:57,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2348 transitions. [2023-08-25 19:56:57,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 102.08695652173913) internal successors, (2348), 23 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states 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 19:56:57,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 309.0) internal successors, (7416), 24 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states 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 19:56:57,201 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 309.0) internal successors, (7416), 24 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states 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 19:56:57,201 INFO L175 Difference]: Start difference. First operand has 277 places, 537 transitions, 10717 flow. Second operand 23 states and 2348 transitions. [2023-08-25 19:56:57,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 646 transitions, 14020 flow [2023-08-25 19:56:57,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 646 transitions, 13510 flow, removed 243 selfloop flow, removed 7 redundant places. [2023-08-25 19:56:57,486 INFO L231 Difference]: Finished difference. Result has 298 places, 589 transitions, 12024 flow [2023-08-25 19:56:57,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=10303, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=12024, PETRI_PLACES=298, PETRI_TRANSITIONS=589} [2023-08-25 19:56:57,487 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 248 predicate places. [2023-08-25 19:56:57,487 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 589 transitions, 12024 flow [2023-08-25 19:56:57,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 98.93333333333334) internal successors, (2968), 30 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states 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 19:56:57,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:56:57,488 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:56:57,494 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 19:56:57,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:57,693 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:56:57,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:56:57,693 INFO L85 PathProgramCache]: Analyzing trace with hash 556068570, now seen corresponding path program 23 times [2023-08-25 19:56:57,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:56:57,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219661767] [2023-08-25 19:56:57,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:56:57,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:56:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:56:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:56:58,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:56:58,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219661767] [2023-08-25 19:56:58,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219661767] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:56:58,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123574654] [2023-08-25 19:56:58,209 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 19:56:58,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:56:58,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:56:58,221 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 19:56:58,223 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 19:56:58,609 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 19:56:58,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:56:58,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 76 conjunts are in the unsatisfiable core [2023-08-25 19:56:58,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:56:58,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:56:58,708 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 19:56:58,979 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 19:56:58,980 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:56:58,980 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 31 treesize of output 14 [2023-08-25 19:56:59,000 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:59,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:56:59,343 INFO L322 Elim1Store]: treesize reduction 10, result has 71.4 percent of original size [2023-08-25 19:56:59,343 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 65 [2023-08-25 19:56:59,353 INFO L322 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2023-08-25 19:56:59,354 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 26 treesize of output 22 [2023-08-25 19:56:59,367 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 19:56:59,458 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:56:59,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123574654] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:56:59,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:56:59,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-25 19:56:59,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799535482] [2023-08-25 19:56:59,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:56:59,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 19:56:59,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:56:59,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 19:56:59,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=876, Unknown=1, NotChecked=0, Total=992 [2023-08-25 19:56:59,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 309 [2023-08-25 19:56:59,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 589 transitions, 12024 flow. Second operand has 32 states, 32 states have (on average 88.84375) internal successors, (2843), 32 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states 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 19:56:59,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:56:59,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 309 [2023-08-25 19:56:59,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:57:04,580 INFO L124 PetriNetUnfolderBase]: 3119/6570 cut-off events. [2023-08-25 19:57:04,580 INFO L125 PetriNetUnfolderBase]: For 167216/167387 co-relation queries the response was YES. [2023-08-25 19:57:04,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52257 conditions, 6570 events. 3119/6570 cut-off events. For 167216/167387 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 53306 event pairs, 445 based on Foata normal form. 55/6620 useless extension candidates. Maximal degree in co-relation 52156. Up to 4258 conditions per place. [2023-08-25 19:57:04,643 INFO L140 encePairwiseOnDemand]: 297/309 looper letters, 589 selfloop transitions, 263 changer transitions 3/862 dead transitions. [2023-08-25 19:57:04,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 862 transitions, 17609 flow [2023-08-25 19:57:04,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-25 19:57:04,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-25 19:57:04,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2836 transitions. [2023-08-25 19:57:04,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30593311758360303 [2023-08-25 19:57:04,645 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2836 transitions. [2023-08-25 19:57:04,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2836 transitions. [2023-08-25 19:57:04,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:57:04,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2836 transitions. [2023-08-25 19:57:04,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 94.53333333333333) internal successors, (2836), 30 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states 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 19:57:04,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 309.0) internal successors, (9579), 31 states have internal predecessors, (9579), 0 states have call successors, (0), 0 states 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 19:57:04,652 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 309.0) internal successors, (9579), 31 states have internal predecessors, (9579), 0 states have call successors, (0), 0 states 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 19:57:04,652 INFO L175 Difference]: Start difference. First operand has 298 places, 589 transitions, 12024 flow. Second operand 30 states and 2836 transitions. [2023-08-25 19:57:04,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 862 transitions, 17609 flow [2023-08-25 19:57:05,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 862 transitions, 16990 flow, removed 272 selfloop flow, removed 9 redundant places. [2023-08-25 19:57:05,182 INFO L231 Difference]: Finished difference. Result has 330 places, 707 transitions, 15043 flow [2023-08-25 19:57:05,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=11420, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15043, PETRI_PLACES=330, PETRI_TRANSITIONS=707} [2023-08-25 19:57:05,182 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 280 predicate places. [2023-08-25 19:57:05,182 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 707 transitions, 15043 flow [2023-08-25 19:57:05,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 88.84375) internal successors, (2843), 32 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states 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 19:57:05,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:57:05,183 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:57:05,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-25 19:57:05,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-08-25 19:57:05,388 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:57:05,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:57:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1346150814, now seen corresponding path program 24 times [2023-08-25 19:57:05,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:57:05,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598808306] [2023-08-25 19:57:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:57:05,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:57:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:57:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:57:06,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:57:06,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598808306] [2023-08-25 19:57:06,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598808306] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:57:06,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634924583] [2023-08-25 19:57:06,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 19:57:06,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:57:06,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:57:06,036 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 19:57:06,086 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 19:57:06,555 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 19:57:06,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:57:06,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 92 conjunts are in the unsatisfiable core [2023-08-25 19:57:06,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:57:06,611 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 11 treesize of output 7 [2023-08-25 19:57:06,675 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 19:57:06,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:57:06,772 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 14 treesize of output 16 [2023-08-25 19:57:06,971 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:57:06,971 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 15 treesize of output 14 [2023-08-25 19:57:07,066 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:57:07,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:57:07,422 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_3058 (Array Int Int)) (|thread1Thread1of1ForFork0_~i~0#1| Int)) (or (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3058) c_~A~0.base))) (< (+ (select .cse0 c_~A~0.offset) (select .cse0 .cse1)) (+ c_~counter~0 (select .cse0 (+ c_~A~0.offset (* |thread1Thread1of1ForFork0_~i~0#1| 4))) 1))) (<= c_~N~0 |thread1Thread1of1ForFork0_~i~0#1|) (< (+ |thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0))) (forall ((v_ArrVal_3058 (Array Int Int)) (|thread1Thread1of1ForFork0_~i~0#1| Int)) (or (<= c_~N~0 |thread1Thread1of1ForFork0_~i~0#1|) (< (+ |thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3058) c_~A~0.base))) (<= (+ c_~counter~0 (select .cse2 (+ c_~A~0.offset (* |thread1Thread1of1ForFork0_~i~0#1| 4)))) (+ (select .cse2 c_~A~0.offset) (select .cse2 .cse1)))))))) is different from false [2023-08-25 19:57:08,987 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4)) (.cse0 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork0_~i~0#1| 4))))) (and (forall ((v_ArrVal_3058 (Array Int Int)) (v_subst_5 Int)) (or (< (+ v_subst_5 1) c_~N~0) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3058) c_~A~0.base))) (<= (+ .cse0 (select .cse1 (+ c_~A~0.offset (* 4 v_subst_5))) c_~counter~0) (+ (select .cse1 c_~A~0.offset) (select .cse1 .cse2)))) (<= c_~N~0 v_subst_5))) (forall ((v_ArrVal_3058 (Array Int Int)) (v_subst_6 Int)) (or (< (+ v_subst_6 1) c_~N~0) (<= c_~N~0 v_subst_6) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3058) c_~A~0.base))) (< (+ (select .cse3 c_~A~0.offset) (select .cse3 .cse2)) (+ .cse0 c_~counter~0 (select .cse3 (+ c_~A~0.offset (* 4 v_subst_6))) 1))))))) is different from false [2023-08-25 19:57:11,045 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4)) (.cse0 (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset))) (and (forall ((v_ArrVal_3058 (Array Int Int)) (v_subst_5 Int)) (or (< (+ v_subst_5 1) c_~N~0) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3058) c_~A~0.base))) (<= (+ .cse0 (select .cse1 (+ c_~A~0.offset (* 4 v_subst_5))) c_~counter~0) (+ (select .cse1 c_~A~0.offset) (select .cse1 .cse2)))) (<= c_~N~0 v_subst_5))) (forall ((v_ArrVal_3058 (Array Int Int)) (v_subst_6 Int)) (or (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3058) c_~A~0.base))) (< (+ (select .cse3 c_~A~0.offset) (select .cse3 .cse2)) (+ .cse0 c_~counter~0 (select .cse3 (+ c_~A~0.offset (* 4 v_subst_6))) 1))) (< (+ v_subst_6 1) c_~N~0) (<= c_~N~0 v_subst_6))))) is different from false [2023-08-25 19:57:11,242 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:57:11,242 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 64 [2023-08-25 19:57:11,254 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:57:11,254 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 248 treesize of output 220 [2023-08-25 19:57:11,267 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:57:11,267 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 92 treesize of output 84 [2023-08-25 19:57:11,280 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:57:11,281 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 39 treesize of output 44 [2023-08-25 19:57:11,394 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:57:11,394 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 65 [2023-08-25 19:57:11,399 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 19:57:11,408 INFO L322 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-08-25 19:57:11,408 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 120 treesize of output 88 [2023-08-25 19:57:11,420 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 19:57:11,420 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 20 treesize of output 15 [2023-08-25 19:57:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2023-08-25 19:57:11,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634924583] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:57:11,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:57:11,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 33 [2023-08-25 19:57:11,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434326605] [2023-08-25 19:57:11,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:57:11,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-25 19:57:11,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:57:11,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-25 19:57:11,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=878, Unknown=3, NotChecked=186, Total=1190 [2023-08-25 19:57:11,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 19:57:11,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 707 transitions, 15043 flow. Second operand has 35 states, 35 states have (on average 79.88571428571429) internal successors, (2796), 35 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states 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 19:57:11,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:57:11,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 19:57:11,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:57:18,981 INFO L124 PetriNetUnfolderBase]: 8100/15421 cut-off events. [2023-08-25 19:57:18,981 INFO L125 PetriNetUnfolderBase]: For 372778/373167 co-relation queries the response was YES. [2023-08-25 19:57:19,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125292 conditions, 15421 events. 8100/15421 cut-off events. For 372778/373167 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 130215 event pairs, 927 based on Foata normal form. 109/15525 useless extension candidates. Maximal degree in co-relation 125179. Up to 11862 conditions per place. [2023-08-25 19:57:19,322 INFO L140 encePairwiseOnDemand]: 291/309 looper letters, 754 selfloop transitions, 146 changer transitions 2/905 dead transitions. [2023-08-25 19:57:19,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 905 transitions, 19304 flow [2023-08-25 19:57:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 19:57:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 19:57:19,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1836 transitions. [2023-08-25 19:57:19,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2829403606102635 [2023-08-25 19:57:19,330 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1836 transitions. [2023-08-25 19:57:19,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1836 transitions. [2023-08-25 19:57:19,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:57:19,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1836 transitions. [2023-08-25 19:57:19,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 87.42857142857143) internal successors, (1836), 21 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states 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 19:57:19,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 309.0) internal successors, (6798), 22 states have internal predecessors, (6798), 0 states have call successors, (0), 0 states 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 19:57:19,335 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 309.0) internal successors, (6798), 22 states have internal predecessors, (6798), 0 states have call successors, (0), 0 states 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 19:57:19,335 INFO L175 Difference]: Start difference. First operand has 330 places, 707 transitions, 15043 flow. Second operand 21 states and 1836 transitions. [2023-08-25 19:57:19,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 905 transitions, 19304 flow [2023-08-25 19:57:22,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 905 transitions, 18499 flow, removed 344 selfloop flow, removed 10 redundant places. [2023-08-25 19:57:22,087 INFO L231 Difference]: Finished difference. Result has 350 places, 775 transitions, 16392 flow [2023-08-25 19:57:22,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=14303, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=16392, PETRI_PLACES=350, PETRI_TRANSITIONS=775} [2023-08-25 19:57:22,088 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 300 predicate places. [2023-08-25 19:57:22,088 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 775 transitions, 16392 flow [2023-08-25 19:57:22,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 79.88571428571429) internal successors, (2796), 35 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states 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 19:57:22,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:57:22,088 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:57:22,094 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 19:57:22,293 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,SelfDestructingSolverStorable32 [2023-08-25 19:57:22,293 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:57:22,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:57:22,293 INFO L85 PathProgramCache]: Analyzing trace with hash -650468656, now seen corresponding path program 25 times [2023-08-25 19:57:22,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:57:22,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431804426] [2023-08-25 19:57:22,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:57:22,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:57:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:57:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:57:22,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:57:22,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431804426] [2023-08-25 19:57:22,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431804426] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:57:22,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793184272] [2023-08-25 19:57:22,937 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 19:57:22,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:57:22,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:57:22,938 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 19:57:22,940 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 19:57:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:57:23,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-25 19:57:23,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:57:23,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:57:23,291 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 14 treesize of output 16 [2023-08-25 19:57:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:57:23,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:57:23,608 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork0_~i~0#1| 4))) (.cse1 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_3185 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3185) c_~A~0.base))) (< (+ (select .cse0 c_~A~0.offset) (select .cse0 .cse1)) (+ c_~counter~0 (select .cse0 .cse2) 1)))) (forall ((v_ArrVal_3185 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3185) c_~A~0.base))) (<= (+ c_~counter~0 (select .cse3 .cse2)) (+ (select .cse3 c_~A~0.offset) (select .cse3 .cse1))))))) is different from false [2023-08-25 19:57:23,627 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:57:23,627 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 74 treesize of output 73 [2023-08-25 19:57:23,638 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:57:23,638 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 25 treesize of output 31 [2023-08-25 19:57:23,688 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 19:57:23,773 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:57:23,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793184272] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:57:23,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:57:23,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 27 [2023-08-25 19:57:23,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36131355] [2023-08-25 19:57:23,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:57:23,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-25 19:57:23,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:57:23,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-25 19:57:23,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=660, Unknown=1, NotChecked=52, Total=812 [2023-08-25 19:57:23,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 309 [2023-08-25 19:57:23,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 775 transitions, 16392 flow. Second operand has 29 states, 29 states have (on average 88.96551724137932) internal successors, (2580), 29 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states 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 19:57:23,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:57:23,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 309 [2023-08-25 19:57:23,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:57:26,756 INFO L124 PetriNetUnfolderBase]: 3804/7952 cut-off events. [2023-08-25 19:57:26,756 INFO L125 PetriNetUnfolderBase]: For 232932/233165 co-relation queries the response was YES. [2023-08-25 19:57:26,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67947 conditions, 7952 events. 3804/7952 cut-off events. For 232932/233165 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 66455 event pairs, 793 based on Foata normal form. 82/8030 useless extension candidates. Maximal degree in co-relation 67826. Up to 6174 conditions per place. [2023-08-25 19:57:26,859 INFO L140 encePairwiseOnDemand]: 299/309 looper letters, 713 selfloop transitions, 157 changer transitions 6/887 dead transitions. [2023-08-25 19:57:26,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 887 transitions, 19895 flow [2023-08-25 19:57:26,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 19:57:26,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 19:57:27,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2060 transitions. [2023-08-25 19:57:27,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30303030303030304 [2023-08-25 19:57:27,018 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2060 transitions. [2023-08-25 19:57:27,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2060 transitions. [2023-08-25 19:57:27,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:57:27,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2060 transitions. [2023-08-25 19:57:27,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 93.63636363636364) internal successors, (2060), 22 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states 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 19:57:27,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 309.0) internal successors, (7107), 23 states have internal predecessors, (7107), 0 states have call successors, (0), 0 states 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 19:57:27,023 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 309.0) internal successors, (7107), 23 states have internal predecessors, (7107), 0 states have call successors, (0), 0 states 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 19:57:27,023 INFO L175 Difference]: Start difference. First operand has 350 places, 775 transitions, 16392 flow. Second operand 22 states and 2060 transitions. [2023-08-25 19:57:27,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 887 transitions, 19895 flow [2023-08-25 19:57:28,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 887 transitions, 19514 flow, removed 163 selfloop flow, removed 7 redundant places. [2023-08-25 19:57:28,092 INFO L231 Difference]: Finished difference. Result has 370 places, 817 transitions, 17624 flow [2023-08-25 19:57:28,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=16011, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=17624, PETRI_PLACES=370, PETRI_TRANSITIONS=817} [2023-08-25 19:57:28,093 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 320 predicate places. [2023-08-25 19:57:28,093 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 817 transitions, 17624 flow [2023-08-25 19:57:28,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 88.96551724137932) internal successors, (2580), 29 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states 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 19:57:28,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:57:28,094 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:57:28,099 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 19:57:28,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:57:28,299 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:57:28,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:57:28,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1816416778, now seen corresponding path program 26 times [2023-08-25 19:57:28,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:57:28,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450092029] [2023-08-25 19:57:28,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:57:28,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:57:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:57:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:57:28,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:57:28,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450092029] [2023-08-25 19:57:28,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450092029] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:57:28,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161890221] [2023-08-25 19:57:28,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:57:28,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:57:28,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:57:28,916 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 19:57:28,917 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 19:57:29,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:57:29,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:57:29,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 74 conjunts are in the unsatisfiable core [2023-08-25 19:57:29,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:57:29,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:57:29,255 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 14 treesize of output 16 [2023-08-25 19:57:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:57:29,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:57:29,531 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3312 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3312) c_~A~0.base))) (= (+ (select .cse0 (+ c_~A~0.offset 4)) (select .cse0 c_~A~0.offset)) (+ (select .cse0 (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork0_~i~0#1| 4))) c_~counter~0)))) is different from false [2023-08-25 19:57:29,550 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:57:29,550 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 74 treesize of output 73 [2023-08-25 19:57:29,561 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:57:29,561 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 25 treesize of output 31 [2023-08-25 19:57:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:57:29,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161890221] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:57:29,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:57:29,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2023-08-25 19:57:29,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808860381] [2023-08-25 19:57:29,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:57:29,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-25 19:57:29,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:57:29,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-25 19:57:29,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=661, Unknown=1, NotChecked=52, Total=812 [2023-08-25 19:57:29,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 309 [2023-08-25 19:57:29,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 817 transitions, 17624 flow. Second operand has 29 states, 29 states have (on average 89.0) internal successors, (2581), 29 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states 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 19:57:29,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:57:29,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 309 [2023-08-25 19:57:29,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:57:32,909 INFO L124 PetriNetUnfolderBase]: 3967/8261 cut-off events. [2023-08-25 19:57:32,910 INFO L125 PetriNetUnfolderBase]: For 255242/255470 co-relation queries the response was YES. [2023-08-25 19:57:32,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71937 conditions, 8261 events. 3967/8261 cut-off events. For 255242/255470 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 69321 event pairs, 828 based on Foata normal form. 78/8334 useless extension candidates. Maximal degree in co-relation 71809. Up to 6659 conditions per place. [2023-08-25 19:57:33,029 INFO L140 encePairwiseOnDemand]: 299/309 looper letters, 695 selfloop transitions, 169 changer transitions 3/878 dead transitions. [2023-08-25 19:57:33,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 878 transitions, 20356 flow [2023-08-25 19:57:33,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-25 19:57:33,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-25 19:57:33,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1766 transitions. [2023-08-25 19:57:33,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30080054505195025 [2023-08-25 19:57:33,031 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1766 transitions. [2023-08-25 19:57:33,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1766 transitions. [2023-08-25 19:57:33,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:57:33,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1766 transitions. [2023-08-25 19:57:33,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 92.94736842105263) internal successors, (1766), 19 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states 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 19:57:33,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 309.0) internal successors, (6180), 20 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states 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 19:57:33,035 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 309.0) internal successors, (6180), 20 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states 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 19:57:33,035 INFO L175 Difference]: Start difference. First operand has 370 places, 817 transitions, 17624 flow. Second operand 19 states and 1766 transitions. [2023-08-25 19:57:33,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 878 transitions, 20356 flow [2023-08-25 19:57:34,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 878 transitions, 19826 flow, removed 189 selfloop flow, removed 14 redundant places. [2023-08-25 19:57:34,084 INFO L231 Difference]: Finished difference. Result has 377 places, 833 transitions, 18062 flow [2023-08-25 19:57:34,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=17094, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=650, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=18062, PETRI_PLACES=377, PETRI_TRANSITIONS=833} [2023-08-25 19:57:34,085 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 327 predicate places. [2023-08-25 19:57:34,085 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 833 transitions, 18062 flow [2023-08-25 19:57:34,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 89.0) internal successors, (2581), 29 states have internal predecessors, (2581), 0 states have call successors, (0), 0 states 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 19:57:34,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:57:34,086 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:57:34,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-25 19:57:34,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:57:34,291 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:57:34,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:57:34,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1400871806, now seen corresponding path program 27 times [2023-08-25 19:57:34,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:57:34,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703738741] [2023-08-25 19:57:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:57:34,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:57:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:57:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:57:34,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:57:34,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703738741] [2023-08-25 19:57:34,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703738741] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:57:34,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037268142] [2023-08-25 19:57:34,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:57:34,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:57:34,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:57:34,978 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 19:57:34,979 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 19:57:35,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 19:57:35,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:57:35,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 83 conjunts are in the unsatisfiable core [2023-08-25 19:57:35,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:57:35,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 19:57:35,565 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 22 treesize of output 22 [2023-08-25 19:57:35,902 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:57:35,902 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 17 treesize of output 14 [2023-08-25 19:57:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:57:35,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:57:38,669 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| c_~A~0.base))) (and (forall ((|thread1Thread1of1ForFork0_~i~0#1| Int)) (or (forall ((v_subst_7 Int) (v_ArrVal_3439 (Array Int Int))) (or (< (+ v_subst_7 1) c_~N~0) (<= c_~N~0 v_subst_7) (<= (+ c_~counter~0 (select .cse0 (+ c_~A~0.offset (* |thread1Thread1of1ForFork0_~i~0#1| 4)))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3439) c_~A~0.base))) (+ (select .cse1 c_~A~0.offset) (select .cse1 (+ c_~A~0.offset (* 4 v_subst_7)))))))) (<= c_~N~0 |thread1Thread1of1ForFork0_~i~0#1|) (< (+ |thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0))) (forall ((|thread1Thread1of1ForFork0_~i~0#1| Int)) (or (forall ((v_subst_8 Int) (v_ArrVal_3439 (Array Int Int))) (or (< (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3439) c_~A~0.base))) (+ (select .cse2 c_~A~0.offset) (select .cse2 (+ c_~A~0.offset (* 4 v_subst_8))))) (+ c_~counter~0 (select .cse0 (+ c_~A~0.offset (* |thread1Thread1of1ForFork0_~i~0#1| 4))) 1)) (<= c_~N~0 v_subst_8) (< (+ v_subst_8 1) c_~N~0))) (<= c_~N~0 |thread1Thread1of1ForFork0_~i~0#1|) (< (+ |thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0))))) is different from false [2023-08-25 19:57:38,795 INFO L322 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2023-08-25 19:57:38,796 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 80 treesize of output 64 [2023-08-25 19:57:38,805 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:57:38,805 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 21 treesize of output 22 [2023-08-25 19:57:38,826 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 19:57:38,831 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 19:57:38,831 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 10 [2023-08-25 19:57:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2023-08-25 19:57:38,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037268142] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:57:38,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:57:38,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 35 [2023-08-25 19:57:38,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228837353] [2023-08-25 19:57:38,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:57:38,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-25 19:57:38,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:57:38,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-25 19:57:38,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1127, Unknown=2, NotChecked=68, Total=1332 [2023-08-25 19:57:38,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 309 [2023-08-25 19:57:39,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 833 transitions, 18062 flow. Second operand has 37 states, 37 states have (on average 88.72972972972973) internal successors, (3283), 37 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states 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 19:57:39,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:57:39,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 309 [2023-08-25 19:57:39,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:57:46,566 INFO L124 PetriNetUnfolderBase]: 4451/9630 cut-off events. [2023-08-25 19:57:46,566 INFO L125 PetriNetUnfolderBase]: For 267362/267622 co-relation queries the response was YES. [2023-08-25 19:57:46,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85941 conditions, 9630 events. 4451/9630 cut-off events. For 267362/267622 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 85233 event pairs, 269 based on Foata normal form. 112/9738 useless extension candidates. Maximal degree in co-relation 85809. Up to 4716 conditions per place. [2023-08-25 19:57:46,716 INFO L140 encePairwiseOnDemand]: 298/309 looper letters, 416 selfloop transitions, 557 changer transitions 2/986 dead transitions. [2023-08-25 19:57:46,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 986 transitions, 21684 flow [2023-08-25 19:57:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-25 19:57:46,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-25 19:57:46,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3258 transitions. [2023-08-25 19:57:46,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30124826629681 [2023-08-25 19:57:46,719 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3258 transitions. [2023-08-25 19:57:46,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3258 transitions. [2023-08-25 19:57:46,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:57:46,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3258 transitions. [2023-08-25 19:57:46,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 93.08571428571429) internal successors, (3258), 35 states have internal predecessors, (3258), 0 states have call successors, (0), 0 states 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 19:57:46,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 309.0) internal successors, (11124), 36 states have internal predecessors, (11124), 0 states have call successors, (0), 0 states 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 19:57:46,727 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 309.0) internal successors, (11124), 36 states have internal predecessors, (11124), 0 states have call successors, (0), 0 states 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 19:57:46,728 INFO L175 Difference]: Start difference. First operand has 377 places, 833 transitions, 18062 flow. Second operand 35 states and 3258 transitions. [2023-08-25 19:57:46,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 986 transitions, 21684 flow [2023-08-25 19:57:48,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 986 transitions, 21390 flow, removed 80 selfloop flow, removed 13 redundant places. [2023-08-25 19:57:48,626 INFO L231 Difference]: Finished difference. Result has 403 places, 871 transitions, 20163 flow [2023-08-25 19:57:48,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=17768, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=522, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=20163, PETRI_PLACES=403, PETRI_TRANSITIONS=871} [2023-08-25 19:57:48,627 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 353 predicate places. [2023-08-25 19:57:48,627 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 871 transitions, 20163 flow [2023-08-25 19:57:48,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 88.72972972972973) internal successors, (3283), 37 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states 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 19:57:48,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:57:48,628 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:57:48,636 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 19:57:48,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:57:48,834 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:57:48,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:57:48,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1680945378, now seen corresponding path program 28 times [2023-08-25 19:57:48,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:57:48,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554259590] [2023-08-25 19:57:48,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:57:48,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:57:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:57:49,405 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:57:49,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:57:49,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554259590] [2023-08-25 19:57:49,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554259590] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:57:49,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038362877] [2023-08-25 19:57:49,406 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:57:49,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:57:49,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:57:49,407 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 19:57:49,408 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 19:57:49,642 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:57:49,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:57:49,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 69 conjunts are in the unsatisfiable core [2023-08-25 19:57:49,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:57:49,859 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:57:49,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:57:49,973 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:57:49,974 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 42 treesize of output 45 [2023-08-25 19:57:50,009 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-25 19:57:50,009 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 43 treesize of output 18 [2023-08-25 19:57:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:57:50,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038362877] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:57:50,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:57:50,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 6] total 23 [2023-08-25 19:57:50,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088944266] [2023-08-25 19:57:50,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:57:50,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 19:57:50,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:57:50,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 19:57:50,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2023-08-25 19:57:50,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 19:57:50,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 871 transitions, 20163 flow. Second operand has 25 states, 25 states have (on average 99.12) internal successors, (2478), 25 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states 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 19:57:50,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:57:50,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 19:57:50,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:57:53,013 INFO L124 PetriNetUnfolderBase]: 2961/7124 cut-off events. [2023-08-25 19:57:53,013 INFO L125 PetriNetUnfolderBase]: For 191806/192063 co-relation queries the response was YES. [2023-08-25 19:57:53,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60234 conditions, 7124 events. 2961/7124 cut-off events. For 191806/192063 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 64941 event pairs, 271 based on Foata normal form. 88/7205 useless extension candidates. Maximal degree in co-relation 60097. Up to 3390 conditions per place. [2023-08-25 19:57:53,104 INFO L140 encePairwiseOnDemand]: 298/309 looper letters, 428 selfloop transitions, 503 changer transitions 1/947 dead transitions. [2023-08-25 19:57:53,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 947 transitions, 23704 flow [2023-08-25 19:57:53,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 19:57:53,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 19:57:53,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1844 transitions. [2023-08-25 19:57:53,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3315354189140597 [2023-08-25 19:57:53,106 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1844 transitions. [2023-08-25 19:57:53,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1844 transitions. [2023-08-25 19:57:53,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:57:53,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1844 transitions. [2023-08-25 19:57:53,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.44444444444444) internal successors, (1844), 18 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 19:57:53,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 309.0) internal successors, (5871), 19 states have internal predecessors, (5871), 0 states have call successors, (0), 0 states 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 19:57:53,110 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 309.0) internal successors, (5871), 19 states have internal predecessors, (5871), 0 states have call successors, (0), 0 states 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 19:57:53,110 INFO L175 Difference]: Start difference. First operand has 403 places, 871 transitions, 20163 flow. Second operand 18 states and 1844 transitions. [2023-08-25 19:57:53,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 947 transitions, 23704 flow [2023-08-25 19:57:54,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 947 transitions, 23066 flow, removed 273 selfloop flow, removed 14 redundant places. [2023-08-25 19:57:54,230 INFO L231 Difference]: Finished difference. Result has 413 places, 905 transitions, 22722 flow [2023-08-25 19:57:54,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=19559, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=871, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=22722, PETRI_PLACES=413, PETRI_TRANSITIONS=905} [2023-08-25 19:57:54,231 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 363 predicate places. [2023-08-25 19:57:54,231 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 905 transitions, 22722 flow [2023-08-25 19:57:54,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 99.12) internal successors, (2478), 25 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states 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 19:57:54,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:57:54,232 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:57:54,237 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 19:57:54,437 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,SelfDestructingSolverStorable36 [2023-08-25 19:57:54,437 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:57:54,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:57:54,437 INFO L85 PathProgramCache]: Analyzing trace with hash -849452514, now seen corresponding path program 29 times [2023-08-25 19:57:54,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:57:54,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318001213] [2023-08-25 19:57:54,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:57:54,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:57:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:57:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:57:54,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:57:54,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318001213] [2023-08-25 19:57:54,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318001213] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:57:54,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532934544] [2023-08-25 19:57:54,963 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 19:57:54,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:57:54,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:57:54,965 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 19:57:54,968 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 19:57:56,115 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 19:57:56,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:57:56,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 69 conjunts are in the unsatisfiable core [2023-08-25 19:57:56,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:57:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:57:56,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:57:56,418 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:57:56,418 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 42 treesize of output 45 [2023-08-25 19:57:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:57:56,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532934544] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:57:56,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:57:56,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 6] total 23 [2023-08-25 19:57:56,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687268711] [2023-08-25 19:57:56,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:57:56,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 19:57:56,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:57:56,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 19:57:56,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2023-08-25 19:57:56,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 19:57:56,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 905 transitions, 22722 flow. Second operand has 25 states, 25 states have (on average 99.12) internal successors, (2478), 25 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states 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 19:57:56,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:57:56,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 19:57:56,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:57:59,590 INFO L124 PetriNetUnfolderBase]: 3159/7767 cut-off events. [2023-08-25 19:57:59,590 INFO L125 PetriNetUnfolderBase]: For 259314/259668 co-relation queries the response was YES. [2023-08-25 19:57:59,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69369 conditions, 7767 events. 3159/7767 cut-off events. For 259314/259668 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 72618 event pairs, 393 based on Foata normal form. 81/7842 useless extension candidates. Maximal degree in co-relation 69225. Up to 5049 conditions per place. [2023-08-25 19:57:59,699 INFO L140 encePairwiseOnDemand]: 296/309 looper letters, 841 selfloop transitions, 155 changer transitions 2/1013 dead transitions. [2023-08-25 19:57:59,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 1013 transitions, 27308 flow [2023-08-25 19:57:59,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 19:57:59,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 19:57:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2444 transitions. [2023-08-25 19:57:59,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3295577130528587 [2023-08-25 19:57:59,701 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2444 transitions. [2023-08-25 19:57:59,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2444 transitions. [2023-08-25 19:57:59,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:57:59,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2444 transitions. [2023-08-25 19:57:59,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 101.83333333333333) internal successors, (2444), 24 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states 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 19:57:59,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 309.0) internal successors, (7725), 25 states have internal predecessors, (7725), 0 states have call successors, (0), 0 states 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 19:57:59,715 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 309.0) internal successors, (7725), 25 states have internal predecessors, (7725), 0 states have call successors, (0), 0 states 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 19:57:59,715 INFO L175 Difference]: Start difference. First operand has 413 places, 905 transitions, 22722 flow. Second operand 24 states and 2444 transitions. [2023-08-25 19:57:59,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 1013 transitions, 27308 flow [2023-08-25 19:58:00,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 1013 transitions, 26541 flow, removed 332 selfloop flow, removed 8 redundant places. [2023-08-25 19:58:01,006 INFO L231 Difference]: Finished difference. Result has 436 places, 961 transitions, 24275 flow [2023-08-25 19:58:01,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=22007, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=905, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=776, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=24275, PETRI_PLACES=436, PETRI_TRANSITIONS=961} [2023-08-25 19:58:01,007 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 386 predicate places. [2023-08-25 19:58:01,007 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 961 transitions, 24275 flow [2023-08-25 19:58:01,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 99.12) internal successors, (2478), 25 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states 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 19:58:01,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:58:01,007 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:58:01,013 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 19:58:01,213 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,SelfDestructingSolverStorable37 [2023-08-25 19:58:01,213 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:58:01,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:58:01,213 INFO L85 PathProgramCache]: Analyzing trace with hash 959615692, now seen corresponding path program 30 times [2023-08-25 19:58:01,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:58:01,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715446353] [2023-08-25 19:58:01,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:58:01,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:58:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:58:02,051 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:58:02,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:58:02,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715446353] [2023-08-25 19:58:02,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715446353] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:58:02,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309323563] [2023-08-25 19:58:02,052 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 19:58:02,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:58:02,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:58:02,053 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 19:58:02,055 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 19:58:02,480 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 19:58:02,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:58:02,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 69 conjunts are in the unsatisfiable core [2023-08-25 19:58:02,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:58:02,664 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 19:58:02,665 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:58:02,665 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 31 treesize of output 14 [2023-08-25 19:58:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:58:02,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:58:02,785 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:58:02,785 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 42 treesize of output 45 [2023-08-25 19:58:02,816 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-25 19:58:02,816 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 43 treesize of output 18 [2023-08-25 19:58:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:58:02,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309323563] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:58:02,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:58:02,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 6] total 17 [2023-08-25 19:58:02,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939712765] [2023-08-25 19:58:02,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:58:02,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 19:58:02,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:58:02,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 19:58:02,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-08-25 19:58:02,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 309 [2023-08-25 19:58:02,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 961 transitions, 24275 flow. Second operand has 19 states, 19 states have (on average 87.94736842105263) internal successors, (1671), 19 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states 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 19:58:02,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:58:02,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 309 [2023-08-25 19:58:02,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:58:09,800 INFO L124 PetriNetUnfolderBase]: 10645/20235 cut-off events. [2023-08-25 19:58:09,801 INFO L125 PetriNetUnfolderBase]: For 761701/762566 co-relation queries the response was YES. [2023-08-25 19:58:10,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198119 conditions, 20235 events. 10645/20235 cut-off events. For 761701/762566 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 176963 event pairs, 1691 based on Foata normal form. 176/20404 useless extension candidates. Maximal degree in co-relation 197966. Up to 16384 conditions per place. [2023-08-25 19:58:10,134 INFO L140 encePairwiseOnDemand]: 300/309 looper letters, 982 selfloop transitions, 110 changer transitions 2/1097 dead transitions. [2023-08-25 19:58:10,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 1097 transitions, 28713 flow [2023-08-25 19:58:10,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 19:58:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 19:58:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1432 transitions. [2023-08-25 19:58:10,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30895361380798275 [2023-08-25 19:58:10,136 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1432 transitions. [2023-08-25 19:58:10,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1432 transitions. [2023-08-25 19:58:10,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:58:10,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1432 transitions. [2023-08-25 19:58:10,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 95.46666666666667) internal successors, (1432), 15 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states 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 19:58:10,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 309.0) internal successors, (4944), 16 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states 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 19:58:10,140 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 309.0) internal successors, (4944), 16 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states 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 19:58:10,140 INFO L175 Difference]: Start difference. First operand has 436 places, 961 transitions, 24275 flow. Second operand 15 states and 1432 transitions. [2023-08-25 19:58:10,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 1097 transitions, 28713 flow [2023-08-25 19:58:15,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 1097 transitions, 28204 flow, removed 212 selfloop flow, removed 9 redundant places. [2023-08-25 19:58:15,637 INFO L231 Difference]: Finished difference. Result has 447 places, 991 transitions, 25407 flow [2023-08-25 19:58:15,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=23786, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=961, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=867, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=25407, PETRI_PLACES=447, PETRI_TRANSITIONS=991} [2023-08-25 19:58:15,637 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 397 predicate places. [2023-08-25 19:58:15,637 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 991 transitions, 25407 flow [2023-08-25 19:58:15,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 87.94736842105263) internal successors, (1671), 19 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states 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 19:58:15,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:58:15,638 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:58:15,643 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 19:58:15,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-25 19:58:15,843 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:58:15,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:58:15,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1480916832, now seen corresponding path program 31 times [2023-08-25 19:58:15,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:58:15,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605328894] [2023-08-25 19:58:15,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:58:15,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:58:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:58:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:58:16,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:58:16,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605328894] [2023-08-25 19:58:16,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605328894] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:58:16,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136355042] [2023-08-25 19:58:16,516 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 19:58:16,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:58:16,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:58:16,517 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 19:58:16,519 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 19:58:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:58:16,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 69 conjunts are in the unsatisfiable core [2023-08-25 19:58:16,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:58:16,956 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:58:16,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:58:17,032 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:58:17,032 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 42 treesize of output 45 [2023-08-25 19:58:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:58:17,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136355042] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:58:17,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:58:17,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 6] total 17 [2023-08-25 19:58:17,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946097451] [2023-08-25 19:58:17,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:58:17,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 19:58:17,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:58:17,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 19:58:17,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-08-25 19:58:17,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 309 [2023-08-25 19:58:17,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 991 transitions, 25407 flow. Second operand has 19 states, 19 states have (on average 87.84210526315789) internal successors, (1669), 19 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states 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 19:58:17,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:58:17,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 309 [2023-08-25 19:58:17,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:58:24,494 INFO L124 PetriNetUnfolderBase]: 10890/20692 cut-off events. [2023-08-25 19:58:24,494 INFO L125 PetriNetUnfolderBase]: For 809519/810319 co-relation queries the response was YES. [2023-08-25 19:58:24,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204606 conditions, 20692 events. 10890/20692 cut-off events. For 809519/810319 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 181315 event pairs, 1769 based on Foata normal form. 140/20825 useless extension candidates. Maximal degree in co-relation 204446. Up to 17196 conditions per place. [2023-08-25 19:58:24,802 INFO L140 encePairwiseOnDemand]: 300/309 looper letters, 1000 selfloop transitions, 88 changer transitions 4/1095 dead transitions. [2023-08-25 19:58:24,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 1095 transitions, 29065 flow [2023-08-25 19:58:24,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 19:58:24,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 19:58:24,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1417 transitions. [2023-08-25 19:58:24,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3057173678532902 [2023-08-25 19:58:24,804 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1417 transitions. [2023-08-25 19:58:24,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1417 transitions. [2023-08-25 19:58:24,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:58:24,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1417 transitions. [2023-08-25 19:58:24,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 94.46666666666667) internal successors, (1417), 15 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states 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 19:58:24,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 309.0) internal successors, (4944), 16 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states 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 19:58:24,807 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 309.0) internal successors, (4944), 16 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states 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 19:58:24,807 INFO L175 Difference]: Start difference. First operand has 447 places, 991 transitions, 25407 flow. Second operand 15 states and 1417 transitions. [2023-08-25 19:58:24,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 1095 transitions, 29065 flow [2023-08-25 19:58:30,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 1095 transitions, 28391 flow, removed 294 selfloop flow, removed 7 redundant places. [2023-08-25 19:58:30,432 INFO L231 Difference]: Finished difference. Result has 458 places, 1006 transitions, 25656 flow [2023-08-25 19:58:30,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=24733, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=991, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=910, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=25656, PETRI_PLACES=458, PETRI_TRANSITIONS=1006} [2023-08-25 19:58:30,433 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 408 predicate places. [2023-08-25 19:58:30,433 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 1006 transitions, 25656 flow [2023-08-25 19:58:30,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 87.84210526315789) internal successors, (1669), 19 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states 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 19:58:30,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:58:30,433 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:58:30,438 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 19:58:30,638 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,SelfDestructingSolverStorable39 [2023-08-25 19:58:30,638 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:58:30,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:58:30,638 INFO L85 PathProgramCache]: Analyzing trace with hash 400498108, now seen corresponding path program 32 times [2023-08-25 19:58:30,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:58:30,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250164636] [2023-08-25 19:58:30,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:58:30,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:58:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:58:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:58:31,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:58:31,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250164636] [2023-08-25 19:58:31,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250164636] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:58:31,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079542790] [2023-08-25 19:58:31,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 19:58:31,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:58:31,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:58:31,341 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 19:58:31,366 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 19:58:31,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 19:58:31,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:58:31,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 69 conjunts are in the unsatisfiable core [2023-08-25 19:58:31,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:58:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:58:31,820 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:58:31,897 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:58:31,897 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 42 treesize of output 45 [2023-08-25 19:58:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:58:31,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079542790] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:58:31,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:58:31,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 6] total 24 [2023-08-25 19:58:31,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667356509] [2023-08-25 19:58:31,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:58:31,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 19:58:31,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:58:31,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 19:58:31,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2023-08-25 19:58:31,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 19:58:31,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 1006 transitions, 25656 flow. Second operand has 26 states, 26 states have (on average 80.65384615384616) internal successors, (2097), 26 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states 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 19:58:31,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:58:31,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 19:58:31,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:58:40,437 INFO L124 PetriNetUnfolderBase]: 11401/21740 cut-off events. [2023-08-25 19:58:40,437 INFO L125 PetriNetUnfolderBase]: For 869035/869865 co-relation queries the response was YES. [2023-08-25 19:58:41,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215371 conditions, 21740 events. 11401/21740 cut-off events. For 869035/869865 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 192883 event pairs, 1284 based on Foata normal form. 156/21890 useless extension candidates. Maximal degree in co-relation 215206. Up to 17068 conditions per place. [2023-08-25 19:58:41,206 INFO L140 encePairwiseOnDemand]: 299/309 looper letters, 1004 selfloop transitions, 174 changer transitions 5/1186 dead transitions. [2023-08-25 19:58:41,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 1186 transitions, 30805 flow [2023-08-25 19:58:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-25 19:58:41,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-25 19:58:41,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2006 transitions. [2023-08-25 19:58:41,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2822569297875334 [2023-08-25 19:58:41,208 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2006 transitions. [2023-08-25 19:58:41,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2006 transitions. [2023-08-25 19:58:41,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:58:41,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2006 transitions. [2023-08-25 19:58:41,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 87.21739130434783) internal successors, (2006), 23 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states 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 19:58:41,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 309.0) internal successors, (7416), 24 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states 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 19:58:41,213 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 309.0) internal successors, (7416), 24 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states 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 19:58:41,213 INFO L175 Difference]: Start difference. First operand has 458 places, 1006 transitions, 25656 flow. Second operand 23 states and 2006 transitions. [2023-08-25 19:58:41,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 1186 transitions, 30805 flow [2023-08-25 19:58:48,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 1186 transitions, 30336 flow, removed 191 selfloop flow, removed 7 redundant places. [2023-08-25 19:58:48,101 INFO L231 Difference]: Finished difference. Result has 476 places, 1041 transitions, 27069 flow [2023-08-25 19:58:48,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=25187, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=855, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=27069, PETRI_PLACES=476, PETRI_TRANSITIONS=1041} [2023-08-25 19:58:48,103 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 426 predicate places. [2023-08-25 19:58:48,103 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 1041 transitions, 27069 flow [2023-08-25 19:58:48,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 80.65384615384616) internal successors, (2097), 26 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states 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 19:58:48,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:58:48,103 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:58:48,111 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 19:58:48,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:58:48,308 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:58:48,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:58:48,309 INFO L85 PathProgramCache]: Analyzing trace with hash -356955294, now seen corresponding path program 33 times [2023-08-25 19:58:48,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:58:48,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730239261] [2023-08-25 19:58:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:58:48,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:58:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:58:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:58:48,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:58:48,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730239261] [2023-08-25 19:58:48,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730239261] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:58:48,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061124698] [2023-08-25 19:58:48,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 19:58:48,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:58:48,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:58:48,911 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 19:58:48,913 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 19:58:49,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 19:58:49,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:58:49,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-25 19:58:49,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:58:49,926 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:58:49,926 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 17 treesize of output 14 [2023-08-25 19:58:49,983 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:58:49,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:58:50,524 INFO L322 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2023-08-25 19:58:50,524 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 37 treesize of output 38 [2023-08-25 19:58:50,538 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 19:58:50,538 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 10 [2023-08-25 19:58:50,612 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:58:50,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061124698] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:58:50,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:58:50,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 31 [2023-08-25 19:58:50,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461778338] [2023-08-25 19:58:50,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:58:50,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-25 19:58:50,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:58:50,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-25 19:58:50,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2023-08-25 19:58:50,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 19:58:50,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 1041 transitions, 27069 flow. Second operand has 33 states, 33 states have (on average 98.75757575757575) internal successors, (3259), 33 states have internal predecessors, (3259), 0 states have call successors, (0), 0 states 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 19:58:50,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:58:50,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 19:58:50,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:58:55,550 INFO L124 PetriNetUnfolderBase]: 3790/9086 cut-off events. [2023-08-25 19:58:55,550 INFO L125 PetriNetUnfolderBase]: For 337151/337450 co-relation queries the response was YES. [2023-08-25 19:58:55,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85624 conditions, 9086 events. 3790/9086 cut-off events. For 337151/337450 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 85963 event pairs, 331 based on Foata normal form. 161/9241 useless extension candidates. Maximal degree in co-relation 85455. Up to 4284 conditions per place. [2023-08-25 19:58:55,693 INFO L140 encePairwiseOnDemand]: 296/309 looper letters, 496 selfloop transitions, 655 changer transitions 3/1169 dead transitions. [2023-08-25 19:58:55,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 1169 transitions, 31895 flow [2023-08-25 19:58:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-25 19:58:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-25 19:58:55,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3456 transitions. [2023-08-25 19:58:55,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3289548829240434 [2023-08-25 19:58:55,696 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3456 transitions. [2023-08-25 19:58:55,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3456 transitions. [2023-08-25 19:58:55,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:58:55,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3456 transitions. [2023-08-25 19:58:55,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 101.6470588235294) internal successors, (3456), 34 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 19:58:55,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 309.0) internal successors, (10815), 35 states have internal predecessors, (10815), 0 states have call successors, (0), 0 states 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 19:58:55,703 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 309.0) internal successors, (10815), 35 states have internal predecessors, (10815), 0 states have call successors, (0), 0 states 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 19:58:55,703 INFO L175 Difference]: Start difference. First operand has 476 places, 1041 transitions, 27069 flow. Second operand 34 states and 3456 transitions. [2023-08-25 19:58:55,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 1169 transitions, 31895 flow [2023-08-25 19:58:57,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1169 transitions, 31038 flow, removed 371 selfloop flow, removed 14 redundant places. [2023-08-25 19:58:57,946 INFO L231 Difference]: Finished difference. Result has 503 places, 1107 transitions, 29767 flow [2023-08-25 19:58:57,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=26214, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1041, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=593, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=29767, PETRI_PLACES=503, PETRI_TRANSITIONS=1107} [2023-08-25 19:58:57,947 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 453 predicate places. [2023-08-25 19:58:57,947 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 1107 transitions, 29767 flow [2023-08-25 19:58:57,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 98.75757575757575) internal successors, (3259), 33 states have internal predecessors, (3259), 0 states have call successors, (0), 0 states 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 19:58:57,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:58:57,947 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:58:57,959 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 19:58:58,153 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,SelfDestructingSolverStorable41 [2023-08-25 19:58:58,153 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:58:58,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:58:58,154 INFO L85 PathProgramCache]: Analyzing trace with hash -465815106, now seen corresponding path program 34 times [2023-08-25 19:58:58,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:58:58,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658512958] [2023-08-25 19:58:58,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:58:58,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:58:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:58:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:58:58,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:58:58,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658512958] [2023-08-25 19:58:58,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658512958] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:58:58,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149775897] [2023-08-25 19:58:58,668 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 19:58:58,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:58:58,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:58:58,669 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 19:58:58,671 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 19:58:58,930 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 19:58:58,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:58:58,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 92 conjunts are in the unsatisfiable core [2023-08-25 19:58:58,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:58:58,983 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 11 treesize of output 7 [2023-08-25 19:58:59,012 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 19:58:59,042 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 19:58:59,264 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:58:59,264 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 15 treesize of output 14 [2023-08-25 19:58:59,342 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:58:59,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:59:01,680 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread2Thread1of1ForFork1_~i~1#1_213| Int) (v_ArrVal_4325 (Array Int Int))) (or (< (+ |v_thread2Thread1of1ForFork1_~i~1#1_213| 1) c_~N~0) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4325) c_~A~0.base))) (= (+ c_~counter~0 (select .cse0 (+ c_~A~0.offset 4))) (select .cse0 (+ c_~A~0.offset (* |v_thread2Thread1of1ForFork1_~i~1#1_213| 4))))) (<= c_~N~0 |v_thread2Thread1of1ForFork1_~i~1#1_213|))) is different from false [2023-08-25 19:59:01,741 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:59:01,742 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2023-08-25 19:59:01,749 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:59:01,749 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 94 treesize of output 88 [2023-08-25 19:59:01,756 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:59:01,756 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 80 treesize of output 68 [2023-08-25 19:59:01,764 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:59:01,764 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 34 treesize of output 33 [2023-08-25 19:59:01,898 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:59:01,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149775897] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:59:01,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:59:01,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 35 [2023-08-25 19:59:01,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800853347] [2023-08-25 19:59:01,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:59:01,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-25 19:59:01,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:59:01,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-25 19:59:01,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1082, Unknown=1, NotChecked=68, Total=1332 [2023-08-25 19:59:01,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 19:59:01,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 1107 transitions, 29767 flow. Second operand has 37 states, 37 states have (on average 80.0) internal successors, (2960), 37 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states 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 19:59:01,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:59:01,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 19:59:01,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:59:13,577 INFO L124 PetriNetUnfolderBase]: 13632/26093 cut-off events. [2023-08-25 19:59:13,577 INFO L125 PetriNetUnfolderBase]: For 1120822/1121861 co-relation queries the response was YES. [2023-08-25 19:59:13,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268836 conditions, 26093 events. 13632/26093 cut-off events. For 1120822/1121861 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 238061 event pairs, 723 based on Foata normal form. 515/26603 useless extension candidates. Maximal degree in co-relation 268659. Up to 12610 conditions per place. [2023-08-25 19:59:14,044 INFO L140 encePairwiseOnDemand]: 297/309 looper letters, 634 selfloop transitions, 931 changer transitions 18/1586 dead transitions. [2023-08-25 19:59:14,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 1586 transitions, 41149 flow [2023-08-25 19:59:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-25 19:59:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-25 19:59:14,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3324 transitions. [2023-08-25 19:59:14,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28308635666836995 [2023-08-25 19:59:14,047 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3324 transitions. [2023-08-25 19:59:14,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3324 transitions. [2023-08-25 19:59:14,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:59:14,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3324 transitions. [2023-08-25 19:59:14,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 87.47368421052632) internal successors, (3324), 38 states have internal predecessors, (3324), 0 states have call successors, (0), 0 states 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 19:59:14,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 309.0) internal successors, (12051), 39 states have internal predecessors, (12051), 0 states have call successors, (0), 0 states 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 19:59:14,054 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 309.0) internal successors, (12051), 39 states have internal predecessors, (12051), 0 states have call successors, (0), 0 states 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 19:59:14,054 INFO L175 Difference]: Start difference. First operand has 503 places, 1107 transitions, 29767 flow. Second operand 38 states and 3324 transitions. [2023-08-25 19:59:14,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 1586 transitions, 41149 flow [2023-08-25 19:59:25,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 1586 transitions, 39194 flow, removed 870 selfloop flow, removed 15 redundant places. [2023-08-25 19:59:25,316 INFO L231 Difference]: Finished difference. Result has 542 places, 1326 transitions, 38310 flow [2023-08-25 19:59:25,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=28740, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=732, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=38310, PETRI_PLACES=542, PETRI_TRANSITIONS=1326} [2023-08-25 19:59:25,317 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 492 predicate places. [2023-08-25 19:59:25,317 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 1326 transitions, 38310 flow [2023-08-25 19:59:25,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 80.0) internal successors, (2960), 37 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states 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 19:59:25,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:59:25,317 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:59:25,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-25 19:59:25,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:59:25,522 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:59:25,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:59:25,522 INFO L85 PathProgramCache]: Analyzing trace with hash -706850410, now seen corresponding path program 35 times [2023-08-25 19:59:25,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:59:25,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279512498] [2023-08-25 19:59:25,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:59:25,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:59:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:59:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:59:26,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:59:26,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279512498] [2023-08-25 19:59:26,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279512498] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:59:26,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807470308] [2023-08-25 19:59:26,184 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 19:59:26,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:59:26,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:59:26,184 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 19:59:26,186 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 19:59:26,625 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 19:59:26,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:59:26,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 71 conjunts are in the unsatisfiable core [2023-08-25 19:59:26,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:59:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:59:26,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:59:26,976 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:59:26,976 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 35 treesize of output 43 [2023-08-25 19:59:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:59:27,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807470308] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:59:27,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:59:27,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 6] total 24 [2023-08-25 19:59:27,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429500393] [2023-08-25 19:59:27,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:59:27,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 19:59:27,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:59:27,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 19:59:27,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2023-08-25 19:59:27,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 19:59:27,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 1326 transitions, 38310 flow. Second operand has 26 states, 26 states have (on average 80.65384615384616) internal successors, (2097), 26 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states 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 19:59:27,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:59:27,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 19:59:27,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 19:59:40,143 INFO L124 PetriNetUnfolderBase]: 14030/26884 cut-off events. [2023-08-25 19:59:40,143 INFO L125 PetriNetUnfolderBase]: For 1390226/1391538 co-relation queries the response was YES. [2023-08-25 19:59:40,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297442 conditions, 26884 events. 14030/26884 cut-off events. For 1390226/1391538 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 247281 event pairs, 1067 based on Foata normal form. 444/27319 useless extension candidates. Maximal degree in co-relation 297249. Up to 15423 conditions per place. [2023-08-25 19:59:40,662 INFO L140 encePairwiseOnDemand]: 298/309 looper letters, 779 selfloop transitions, 727 changer transitions 2/1511 dead transitions. [2023-08-25 19:59:40,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 1511 transitions, 44137 flow [2023-08-25 19:59:40,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 19:59:40,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 19:59:40,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2105 transitions. [2023-08-25 19:59:40,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28384573894282633 [2023-08-25 19:59:40,664 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2105 transitions. [2023-08-25 19:59:40,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2105 transitions. [2023-08-25 19:59:40,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 19:59:40,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2105 transitions. [2023-08-25 19:59:40,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 87.70833333333333) internal successors, (2105), 24 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states 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 19:59:40,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 309.0) internal successors, (7725), 25 states have internal predecessors, (7725), 0 states have call successors, (0), 0 states 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 19:59:40,668 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 309.0) internal successors, (7725), 25 states have internal predecessors, (7725), 0 states have call successors, (0), 0 states 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 19:59:40,668 INFO L175 Difference]: Start difference. First operand has 542 places, 1326 transitions, 38310 flow. Second operand 24 states and 2105 transitions. [2023-08-25 19:59:40,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 1511 transitions, 44137 flow [2023-08-25 19:59:57,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 1511 transitions, 42913 flow, removed 584 selfloop flow, removed 9 redundant places. [2023-08-25 19:59:57,936 INFO L231 Difference]: Finished difference. Result has 562 places, 1362 transitions, 40537 flow [2023-08-25 19:59:57,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=37124, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=696, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=40537, PETRI_PLACES=562, PETRI_TRANSITIONS=1362} [2023-08-25 19:59:57,937 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 512 predicate places. [2023-08-25 19:59:57,937 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 1362 transitions, 40537 flow [2023-08-25 19:59:57,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 80.65384615384616) internal successors, (2097), 26 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states 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 19:59:57,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 19:59:57,937 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 19:59:57,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-25 19:59:58,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:59:58,142 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 19:59:58,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 19:59:58,143 INFO L85 PathProgramCache]: Analyzing trace with hash 60406498, now seen corresponding path program 36 times [2023-08-25 19:59:58,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 19:59:58,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565428917] [2023-08-25 19:59:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 19:59:58,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 19:59:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 19:59:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 19:59:58,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 19:59:58,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565428917] [2023-08-25 19:59:58,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565428917] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 19:59:58,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854424388] [2023-08-25 19:59:58,799 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 19:59:58,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 19:59:58,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 19:59:58,800 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 19:59:58,802 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 19:59:59,150 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 19:59:59,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 19:59:59,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 73 conjunts are in the unsatisfiable core [2023-08-25 19:59:59,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 19:59:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 19:59:59,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 19:59:59,495 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 19:59:59,495 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 35 treesize of output 43 [2023-08-25 19:59:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 19:59:59,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854424388] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 19:59:59,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 19:59:59,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 6] total 25 [2023-08-25 19:59:59,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830943958] [2023-08-25 19:59:59,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 19:59:59,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-25 19:59:59,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 19:59:59,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-25 19:59:59,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2023-08-25 19:59:59,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 19:59:59,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 1362 transitions, 40537 flow. Second operand has 27 states, 27 states have (on average 80.5925925925926) internal successors, (2176), 27 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states 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 19:59:59,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 19:59:59,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 19:59:59,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:00:13,919 INFO L124 PetriNetUnfolderBase]: 14340/27611 cut-off events. [2023-08-25 20:00:13,920 INFO L125 PetriNetUnfolderBase]: For 1616305/1617581 co-relation queries the response was YES. [2023-08-25 20:00:15,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311281 conditions, 27611 events. 14340/27611 cut-off events. For 1616305/1617581 co-relation queries the response was YES. Maximal size of possible extension queue 1298. Compared 256529 event pairs, 1476 based on Foata normal form. 429/28040 useless extension candidates. Maximal degree in co-relation 311081. Up to 22218 conditions per place. [2023-08-25 20:00:15,326 INFO L140 encePairwiseOnDemand]: 300/309 looper letters, 1303 selfloop transitions, 172 changer transitions 1/1479 dead transitions. [2023-08-25 20:00:15,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1479 transitions, 45548 flow [2023-08-25 20:00:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 20:00:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 20:00:15,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1386 transitions. [2023-08-25 20:00:15,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2803398058252427 [2023-08-25 20:00:15,327 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1386 transitions. [2023-08-25 20:00:15,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1386 transitions. [2023-08-25 20:00:15,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:00:15,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1386 transitions. [2023-08-25 20:00:15,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 86.625) internal successors, (1386), 16 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 20:00:15,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 309.0) internal successors, (5253), 17 states have internal predecessors, (5253), 0 states have call successors, (0), 0 states 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 20:00:15,331 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 309.0) internal successors, (5253), 17 states have internal predecessors, (5253), 0 states have call successors, (0), 0 states 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 20:00:15,331 INFO L175 Difference]: Start difference. First operand has 562 places, 1362 transitions, 40537 flow. Second operand 16 states and 1386 transitions. [2023-08-25 20:00:15,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 1479 transitions, 45548 flow [2023-08-25 20:00:33,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 1479 transitions, 44405 flow, removed 488 selfloop flow, removed 11 redundant places. [2023-08-25 20:00:33,466 INFO L231 Difference]: Finished difference. Result has 569 places, 1386 transitions, 40950 flow [2023-08-25 20:00:33,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=39402, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=40950, PETRI_PLACES=569, PETRI_TRANSITIONS=1386} [2023-08-25 20:00:33,467 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 519 predicate places. [2023-08-25 20:00:33,467 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 1386 transitions, 40950 flow [2023-08-25 20:00:33,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 80.5925925925926) internal successors, (2176), 27 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states 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 20:00:33,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:00:33,468 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:00:33,473 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 20:00:33,673 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,SelfDestructingSolverStorable44 [2023-08-25 20:00:33,673 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:00:33,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:00:33,673 INFO L85 PathProgramCache]: Analyzing trace with hash -200431478, now seen corresponding path program 37 times [2023-08-25 20:00:33,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:00:33,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864366233] [2023-08-25 20:00:33,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:00:33,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:00:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:00:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:00:34,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:00:34,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864366233] [2023-08-25 20:00:34,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864366233] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:00:34,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761944710] [2023-08-25 20:00:34,246 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 20:00:34,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:00:34,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:00:34,247 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 20:00:34,249 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 20:00:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:00:34,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 69 conjunts are in the unsatisfiable core [2023-08-25 20:00:34,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:00:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:00:34,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:00:34,782 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:00:34,783 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 35 treesize of output 43 [2023-08-25 20:00:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:00:34,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761944710] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:00:34,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:00:34,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 6] total 21 [2023-08-25 20:00:34,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243993579] [2023-08-25 20:00:34,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:00:34,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 20:00:34,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:00:34,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 20:00:34,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2023-08-25 20:00:34,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 20:00:34,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 1386 transitions, 40950 flow. Second operand has 23 states, 23 states have (on average 99.30434782608695) internal successors, (2284), 23 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states 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 20:00:34,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:00:34,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 20:00:34,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:00:40,608 INFO L124 PetriNetUnfolderBase]: 4584/11354 cut-off events. [2023-08-25 20:00:40,608 INFO L125 PetriNetUnfolderBase]: For 585778/586257 co-relation queries the response was YES. [2023-08-25 20:00:40,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117387 conditions, 11354 events. 4584/11354 cut-off events. For 585778/586257 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 114386 event pairs, 590 based on Foata normal form. 172/11517 useless extension candidates. Maximal degree in co-relation 117184. Up to 7633 conditions per place. [2023-08-25 20:00:40,813 INFO L140 encePairwiseOnDemand]: 300/309 looper letters, 1275 selfloop transitions, 159 changer transitions 1/1450 dead transitions. [2023-08-25 20:00:40,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 1450 transitions, 45362 flow [2023-08-25 20:00:40,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-25 20:00:40,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-25 20:00:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2341 transitions. [2023-08-25 20:00:40,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3293935556493598 [2023-08-25 20:00:40,816 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2341 transitions. [2023-08-25 20:00:40,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2341 transitions. [2023-08-25 20:00:40,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:00:40,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2341 transitions. [2023-08-25 20:00:40,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 101.78260869565217) internal successors, (2341), 23 states have internal predecessors, (2341), 0 states have call successors, (0), 0 states 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 20:00:40,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 309.0) internal successors, (7416), 24 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states 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 20:00:40,820 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 309.0) internal successors, (7416), 24 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states 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 20:00:40,820 INFO L175 Difference]: Start difference. First operand has 569 places, 1386 transitions, 40950 flow. Second operand 23 states and 2341 transitions. [2023-08-25 20:00:40,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 1450 transitions, 45362 flow [2023-08-25 20:00:45,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 1450 transitions, 44796 flow, removed 222 selfloop flow, removed 9 redundant places. [2023-08-25 20:00:45,776 INFO L231 Difference]: Finished difference. Result has 589 places, 1410 transitions, 41845 flow [2023-08-25 20:00:45,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=40384, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=41845, PETRI_PLACES=589, PETRI_TRANSITIONS=1410} [2023-08-25 20:00:45,777 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 539 predicate places. [2023-08-25 20:00:45,777 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 1410 transitions, 41845 flow [2023-08-25 20:00:45,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 99.30434782608695) internal successors, (2284), 23 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states 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 20:00:45,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:00:45,777 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:00:45,782 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 20:00:45,982 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,SelfDestructingSolverStorable45 [2023-08-25 20:00:45,982 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:00:45,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:00:45,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1501566008, now seen corresponding path program 38 times [2023-08-25 20:00:45,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:00:45,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838864090] [2023-08-25 20:00:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:00:45,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:00:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:00:46,137 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 20:00:46,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:00:46,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838864090] [2023-08-25 20:00:46,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838864090] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:00:46,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521720050] [2023-08-25 20:00:46,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 20:00:46,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:00:46,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:00:46,138 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 20:00:46,140 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 20:00:46,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:00:46,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:00:46,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 20:00:46,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:00:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 20:00:46,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:00:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 20:00:46,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521720050] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:00:46,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:00:46,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-08-25 20:00:46,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142595315] [2023-08-25 20:00:46,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:00:46,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 20:00:46,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:00:46,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 20:00:46,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2023-08-25 20:00:46,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 309 [2023-08-25 20:00:46,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 1410 transitions, 41845 flow. Second operand has 20 states, 20 states have (on average 114.9) internal successors, (2298), 20 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states 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 20:00:46,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:00:46,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 309 [2023-08-25 20:00:46,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:00:54,025 INFO L124 PetriNetUnfolderBase]: 6314/15801 cut-off events. [2023-08-25 20:00:54,025 INFO L125 PetriNetUnfolderBase]: For 960081/960786 co-relation queries the response was YES. [2023-08-25 20:00:54,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171444 conditions, 15801 events. 6314/15801 cut-off events. For 960081/960786 co-relation queries the response was YES. Maximal size of possible extension queue 908. Compared 169323 event pairs, 1741 based on Foata normal form. 445/16086 useless extension candidates. Maximal degree in co-relation 171233. Up to 7401 conditions per place. [2023-08-25 20:00:54,772 INFO L140 encePairwiseOnDemand]: 303/309 looper letters, 1522 selfloop transitions, 300 changer transitions 0/1862 dead transitions. [2023-08-25 20:00:54,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 1862 transitions, 60059 flow [2023-08-25 20:00:54,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 20:00:54,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 20:00:54,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1187 transitions. [2023-08-25 20:00:54,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38414239482200646 [2023-08-25 20:00:54,774 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1187 transitions. [2023-08-25 20:00:54,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1187 transitions. [2023-08-25 20:00:54,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:00:54,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1187 transitions. [2023-08-25 20:00:54,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states 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 20:00:54,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 309.0) internal successors, (3399), 11 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states 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 20:00:54,776 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 309.0) internal successors, (3399), 11 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states 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 20:00:54,776 INFO L175 Difference]: Start difference. First operand has 589 places, 1410 transitions, 41845 flow. Second operand 10 states and 1187 transitions. [2023-08-25 20:00:54,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 1862 transitions, 60059 flow [2023-08-25 20:01:02,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 1862 transitions, 59132 flow, removed 391 selfloop flow, removed 16 redundant places. [2023-08-25 20:01:03,009 INFO L231 Difference]: Finished difference. Result has 583 places, 1501 transitions, 45205 flow [2023-08-25 20:01:03,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=39534, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1046, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=45205, PETRI_PLACES=583, PETRI_TRANSITIONS=1501} [2023-08-25 20:01:03,011 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 533 predicate places. [2023-08-25 20:01:03,011 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 1501 transitions, 45205 flow [2023-08-25 20:01:03,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 114.9) internal successors, (2298), 20 states have internal predecessors, (2298), 0 states have call successors, (0), 0 states 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 20:01:03,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:01:03,011 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:01:03,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-08-25 20:01:03,216 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,SelfDestructingSolverStorable46 [2023-08-25 20:01:03,217 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:01:03,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:01:03,217 INFO L85 PathProgramCache]: Analyzing trace with hash 174347298, now seen corresponding path program 39 times [2023-08-25 20:01:03,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:01:03,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502444893] [2023-08-25 20:01:03,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:01:03,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:01:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:01:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:01:03,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:01:03,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502444893] [2023-08-25 20:01:03,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502444893] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:01:03,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721620546] [2023-08-25 20:01:03,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 20:01:03,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:01:03,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:01:03,326 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 20:01:03,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-08-25 20:01:04,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 20:01:04,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:01:04,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 20:01:04,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:01:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:01:04,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:01:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:01:04,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721620546] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:01:04,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:01:04,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-25 20:01:04,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569696691] [2023-08-25 20:01:04,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:01:04,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 20:01:04,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:01:04,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 20:01:04,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-08-25 20:01:04,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 309 [2023-08-25 20:01:04,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 1501 transitions, 45205 flow. Second operand has 19 states, 19 states have (on average 115.15789473684211) internal successors, (2188), 19 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states 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 20:01:04,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:01:04,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 309 [2023-08-25 20:01:04,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:01:09,892 INFO L124 PetriNetUnfolderBase]: 4179/11316 cut-off events. [2023-08-25 20:01:09,892 INFO L125 PetriNetUnfolderBase]: For 641754/642184 co-relation queries the response was YES. [2023-08-25 20:01:10,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117961 conditions, 11316 events. 4179/11316 cut-off events. For 641754/642184 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 119830 event pairs, 1222 based on Foata normal form. 608/11803 useless extension candidates. Maximal degree in co-relation 117751. Up to 3651 conditions per place. [2023-08-25 20:01:10,107 INFO L140 encePairwiseOnDemand]: 303/309 looper letters, 1192 selfloop transitions, 219 changer transitions 36/1487 dead transitions. [2023-08-25 20:01:10,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 1487 transitions, 49631 flow [2023-08-25 20:01:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 20:01:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 20:01:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1072 transitions. [2023-08-25 20:01:10,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38547285149226895 [2023-08-25 20:01:10,112 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1072 transitions. [2023-08-25 20:01:10,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1072 transitions. [2023-08-25 20:01:10,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:01:10,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1072 transitions. [2023-08-25 20:01:10,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states 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 20:01:10,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 309.0) internal successors, (3090), 10 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states 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 20:01:10,114 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 309.0) internal successors, (3090), 10 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states 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 20:01:10,114 INFO L175 Difference]: Start difference. First operand has 583 places, 1501 transitions, 45205 flow. Second operand 9 states and 1072 transitions. [2023-08-25 20:01:10,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 1487 transitions, 49631 flow [2023-08-25 20:01:16,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 1487 transitions, 48576 flow, removed 60 selfloop flow, removed 19 redundant places. [2023-08-25 20:01:16,149 INFO L231 Difference]: Finished difference. Result has 570 places, 1272 transitions, 39052 flow [2023-08-25 20:01:16,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=38480, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1065, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=39052, PETRI_PLACES=570, PETRI_TRANSITIONS=1272} [2023-08-25 20:01:16,150 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 520 predicate places. [2023-08-25 20:01:16,150 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 1272 transitions, 39052 flow [2023-08-25 20:01:16,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 115.15789473684211) internal successors, (2188), 19 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states 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 20:01:16,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:01:16,151 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:01:16,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-08-25 20:01:16,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-08-25 20:01:16,357 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:01:16,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:01:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash -393483972, now seen corresponding path program 40 times [2023-08-25 20:01:16,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:01:16,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534838813] [2023-08-25 20:01:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:01:16,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:01:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:01:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:01:16,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:01:16,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534838813] [2023-08-25 20:01:16,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534838813] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:01:16,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029590711] [2023-08-25 20:01:16,467 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 20:01:16,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:01:16,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:01:16,469 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:01:16,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-08-25 20:01:16,776 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 20:01:16,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:01:16,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 20:01:16,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:01:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:01:16,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:01:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 20:01:16,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029590711] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:01:16,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:01:16,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-25 20:01:16,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814427816] [2023-08-25 20:01:16,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:01:16,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 20:01:16,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:01:16,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 20:01:16,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-08-25 20:01:16,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 309 [2023-08-25 20:01:16,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 1272 transitions, 39052 flow. Second operand has 19 states, 19 states have (on average 115.47368421052632) internal successors, (2194), 19 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states 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 20:01:16,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:01:16,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 309 [2023-08-25 20:01:16,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:01:20,753 INFO L124 PetriNetUnfolderBase]: 3032/8291 cut-off events. [2023-08-25 20:01:20,753 INFO L125 PetriNetUnfolderBase]: For 448237/448501 co-relation queries the response was YES. [2023-08-25 20:01:20,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82139 conditions, 8291 events. 3032/8291 cut-off events. For 448237/448501 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 83018 event pairs, 893 based on Foata normal form. 301/8570 useless extension candidates. Maximal degree in co-relation 81939. Up to 3651 conditions per place. [2023-08-25 20:01:20,890 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 773 selfloop transitions, 4 changer transitions 363/1160 dead transitions. [2023-08-25 20:01:20,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 1160 transitions, 36904 flow [2023-08-25 20:01:20,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 20:01:20,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 20:01:20,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1069 transitions. [2023-08-25 20:01:20,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3843941028407048 [2023-08-25 20:01:20,891 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1069 transitions. [2023-08-25 20:01:20,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1069 transitions. [2023-08-25 20:01:20,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:01:20,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1069 transitions. [2023-08-25 20:01:20,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.77777777777777) internal successors, (1069), 9 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states 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 20:01:20,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 309.0) internal successors, (3090), 10 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states 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 20:01:20,893 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 309.0) internal successors, (3090), 10 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states 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 20:01:20,893 INFO L175 Difference]: Start difference. First operand has 570 places, 1272 transitions, 39052 flow. Second operand 9 states and 1069 transitions. [2023-08-25 20:01:20,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 1160 transitions, 36904 flow [2023-08-25 20:01:24,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 1160 transitions, 36153 flow, removed 155 selfloop flow, removed 23 redundant places. [2023-08-25 20:01:24,182 INFO L231 Difference]: Finished difference. Result has 544 places, 797 transitions, 23845 flow [2023-08-25 20:01:24,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=32705, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1096, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23845, PETRI_PLACES=544, PETRI_TRANSITIONS=797} [2023-08-25 20:01:24,184 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 494 predicate places. [2023-08-25 20:01:24,184 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 797 transitions, 23845 flow [2023-08-25 20:01:24,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 115.47368421052632) internal successors, (2194), 19 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states 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 20:01:24,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:01:24,184 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 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 20:01:24,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-08-25 20:01:24,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:01:24,390 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:01:24,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:01:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash -464167096, now seen corresponding path program 41 times [2023-08-25 20:01:24,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:01:24,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556041697] [2023-08-25 20:01:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:01:24,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:01:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:01:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-25 20:01:24,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:01:24,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556041697] [2023-08-25 20:01:24,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556041697] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:01:24,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47892605] [2023-08-25 20:01:24,502 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 20:01:24,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:01:24,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:01:24,503 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:01:24,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-08-25 20:01:25,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 20:01:25,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:01:25,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 20:01:25,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:01:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 20:01:25,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:01:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 20:01:25,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47892605] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:01:25,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:01:25,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 16 [2023-08-25 20:01:25,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513415321] [2023-08-25 20:01:25,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:01:25,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 20:01:25,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:01:25,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 20:01:25,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-08-25 20:01:25,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 309 [2023-08-25 20:01:25,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 797 transitions, 23845 flow. Second operand has 16 states, 16 states have (on average 111.4375) internal successors, (1783), 16 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states 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 20:01:25,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:01:25,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 309 [2023-08-25 20:01:25,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:01:27,847 INFO L124 PetriNetUnfolderBase]: 2034/5078 cut-off events. [2023-08-25 20:01:27,847 INFO L125 PetriNetUnfolderBase]: For 264539/264785 co-relation queries the response was YES. [2023-08-25 20:01:27,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53724 conditions, 5078 events. 2034/5078 cut-off events. For 264539/264785 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 42925 event pairs, 91 based on Foata normal form. 284/5349 useless extension candidates. Maximal degree in co-relation 53538. Up to 1574 conditions per place. [2023-08-25 20:01:27,942 INFO L140 encePairwiseOnDemand]: 299/309 looper letters, 384 selfloop transitions, 511 changer transitions 0/906 dead transitions. [2023-08-25 20:01:27,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 906 transitions, 30122 flow [2023-08-25 20:01:27,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 20:01:27,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 20:01:27,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2950 transitions. [2023-08-25 20:01:27,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671894448593478 [2023-08-25 20:01:27,944 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2950 transitions. [2023-08-25 20:01:27,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2950 transitions. [2023-08-25 20:01:27,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:01:27,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2950 transitions. [2023-08-25 20:01:27,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 113.46153846153847) internal successors, (2950), 26 states have internal predecessors, (2950), 0 states have call successors, (0), 0 states 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 20:01:27,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 309.0) internal successors, (8343), 27 states have internal predecessors, (8343), 0 states have call successors, (0), 0 states 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 20:01:27,950 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 309.0) internal successors, (8343), 27 states have internal predecessors, (8343), 0 states have call successors, (0), 0 states 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 20:01:27,950 INFO L175 Difference]: Start difference. First operand has 544 places, 797 transitions, 23845 flow. Second operand 26 states and 2950 transitions. [2023-08-25 20:01:27,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 906 transitions, 30122 flow [2023-08-25 20:01:29,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 906 transitions, 27614 flow, removed 509 selfloop flow, removed 69 redundant places. [2023-08-25 20:01:29,449 INFO L231 Difference]: Finished difference. Result has 414 places, 839 transitions, 25764 flow [2023-08-25 20:01:29,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=21186, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=427, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=25764, PETRI_PLACES=414, PETRI_TRANSITIONS=839} [2023-08-25 20:01:29,450 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 364 predicate places. [2023-08-25 20:01:29,450 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 839 transitions, 25764 flow [2023-08-25 20:01:29,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 111.4375) internal successors, (1783), 16 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states 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 20:01:29,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:01:29,450 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:01:29,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-08-25 20:01:29,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-08-25 20:01:29,658 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:01:29,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:01:29,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1777420562, now seen corresponding path program 42 times [2023-08-25 20:01:29,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:01:29,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234823005] [2023-08-25 20:01:29,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:01:29,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:01:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:01:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:01:30,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:01:30,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234823005] [2023-08-25 20:01:30,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234823005] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:01:30,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350887856] [2023-08-25 20:01:30,766 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 20:01:30,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:01:30,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:01:30,767 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:01:30,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-08-25 20:01:31,444 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 20:01:31,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:01:31,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 112 conjunts are in the unsatisfiable core [2023-08-25 20:01:31,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:01:31,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 20:01:31,879 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:01:31,880 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 33 [2023-08-25 20:01:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:01:31,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:01:32,623 INFO L322 Elim1Store]: treesize reduction 68, result has 34.0 percent of original size [2023-08-25 20:01:32,623 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 62 treesize of output 46 [2023-08-25 20:01:32,654 INFO L322 Elim1Store]: treesize reduction 90, result has 12.6 percent of original size [2023-08-25 20:01:32,654 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 61 treesize of output 23 [2023-08-25 20:01:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:01:32,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350887856] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:01:32,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:01:32,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 41 [2023-08-25 20:01:32,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478641221] [2023-08-25 20:01:32,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:01:32,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-08-25 20:01:32,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:01:32,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-08-25 20:01:32,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1591, Unknown=0, NotChecked=0, Total=1806 [2023-08-25 20:01:32,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 20:01:32,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 839 transitions, 25764 flow. Second operand has 43 states, 43 states have (on average 79.74418604651163) internal successors, (3429), 43 states have internal predecessors, (3429), 0 states have call successors, (0), 0 states 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 20:01:32,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:01:32,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 20:01:32,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:01:47,841 INFO L124 PetriNetUnfolderBase]: 8010/15837 cut-off events. [2023-08-25 20:01:47,841 INFO L125 PetriNetUnfolderBase]: For 776762/777268 co-relation queries the response was YES. [2023-08-25 20:01:47,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172825 conditions, 15837 events. 8010/15837 cut-off events. For 776762/777268 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 136377 event pairs, 334 based on Foata normal form. 254/16085 useless extension candidates. Maximal degree in co-relation 172687. Up to 7732 conditions per place. [2023-08-25 20:01:48,067 INFO L140 encePairwiseOnDemand]: 296/309 looper letters, 700 selfloop transitions, 589 changer transitions 16/1308 dead transitions. [2023-08-25 20:01:48,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 1308 transitions, 33788 flow [2023-08-25 20:01:48,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-08-25 20:01:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-08-25 20:01:48,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 4993 transitions. [2023-08-25 20:01:48,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28348379038210414 [2023-08-25 20:01:48,077 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 4993 transitions. [2023-08-25 20:01:48,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 4993 transitions. [2023-08-25 20:01:48,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:01:48,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 4993 transitions. [2023-08-25 20:01:48,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 87.59649122807018) internal successors, (4993), 57 states have internal predecessors, (4993), 0 states have call successors, (0), 0 states 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 20:01:48,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 309.0) internal successors, (17922), 58 states have internal predecessors, (17922), 0 states have call successors, (0), 0 states 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 20:01:48,088 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 309.0) internal successors, (17922), 58 states have internal predecessors, (17922), 0 states have call successors, (0), 0 states 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 20:01:48,088 INFO L175 Difference]: Start difference. First operand has 414 places, 839 transitions, 25764 flow. Second operand 57 states and 4993 transitions. [2023-08-25 20:01:48,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 1308 transitions, 33788 flow [2023-08-25 20:01:53,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 1308 transitions, 31740 flow, removed 785 selfloop flow, removed 25 redundant places. [2023-08-25 20:01:53,573 INFO L231 Difference]: Finished difference. Result has 459 places, 933 transitions, 29911 flow [2023-08-25 20:01:53,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=24214, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=839, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=504, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=29911, PETRI_PLACES=459, PETRI_TRANSITIONS=933} [2023-08-25 20:01:53,574 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 409 predicate places. [2023-08-25 20:01:53,574 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 933 transitions, 29911 flow [2023-08-25 20:01:53,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 79.74418604651163) internal successors, (3429), 43 states have internal predecessors, (3429), 0 states have call successors, (0), 0 states 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 20:01:53,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:01:53,575 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:01:53,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-08-25 20:01:53,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:01:53,782 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:01:53,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:01:53,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1827756634, now seen corresponding path program 43 times [2023-08-25 20:01:53,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:01:53,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446375550] [2023-08-25 20:01:53,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:01:53,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:01:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:01:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:01:54,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:01:54,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446375550] [2023-08-25 20:01:54,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446375550] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:01:54,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37700761] [2023-08-25 20:01:54,800 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 20:01:54,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:01:54,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:01:54,801 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:01:54,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-08-25 20:01:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:01:55,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 97 conjunts are in the unsatisfiable core [2023-08-25 20:01:55,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:01:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 20:01:55,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:01:55,670 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:01:55,670 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 62 treesize of output 95 [2023-08-25 20:01:55,869 INFO L322 Elim1Store]: treesize reduction 72, result has 15.3 percent of original size [2023-08-25 20:01:55,870 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 63 treesize of output 24 [2023-08-25 20:01:55,943 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 20:01:55,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37700761] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:01:55,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:01:55,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 8] total 31 [2023-08-25 20:01:55,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914115800] [2023-08-25 20:01:55,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:01:55,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-25 20:01:55,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:01:55,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-25 20:01:55,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2023-08-25 20:01:55,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 20:01:55,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 933 transitions, 29911 flow. Second operand has 33 states, 33 states have (on average 80.39393939393939) internal successors, (2653), 33 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states 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 20:01:55,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:01:55,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 20:01:55,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:02:04,133 INFO L124 PetriNetUnfolderBase]: 8948/17582 cut-off events. [2023-08-25 20:02:04,134 INFO L125 PetriNetUnfolderBase]: For 877061/878159 co-relation queries the response was YES. [2023-08-25 20:02:04,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193470 conditions, 17582 events. 8948/17582 cut-off events. For 877061/878159 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 153123 event pairs, 405 based on Foata normal form. 294/17870 useless extension candidates. Maximal degree in co-relation 193331. Up to 8480 conditions per place. [2023-08-25 20:02:04,388 INFO L140 encePairwiseOnDemand]: 298/309 looper letters, 648 selfloop transitions, 624 changer transitions 4/1279 dead transitions. [2023-08-25 20:02:04,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 1279 transitions, 38138 flow [2023-08-25 20:02:04,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-25 20:02:04,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-25 20:02:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3493 transitions. [2023-08-25 20:02:04,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2826051779935275 [2023-08-25 20:02:04,392 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3493 transitions. [2023-08-25 20:02:04,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3493 transitions. [2023-08-25 20:02:04,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:02:04,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3493 transitions. [2023-08-25 20:02:04,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 87.325) internal successors, (3493), 40 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states 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 20:02:04,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 309.0) internal successors, (12669), 41 states have internal predecessors, (12669), 0 states have call successors, (0), 0 states 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 20:02:04,400 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 309.0) internal successors, (12669), 41 states have internal predecessors, (12669), 0 states have call successors, (0), 0 states 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 20:02:04,400 INFO L175 Difference]: Start difference. First operand has 459 places, 933 transitions, 29911 flow. Second operand 40 states and 3493 transitions. [2023-08-25 20:02:04,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 1279 transitions, 38138 flow [2023-08-25 20:02:10,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 1279 transitions, 36629 flow, removed 676 selfloop flow, removed 26 redundant places. [2023-08-25 20:02:10,245 INFO L231 Difference]: Finished difference. Result has 485 places, 1037 transitions, 35049 flow [2023-08-25 20:02:10,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=28482, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=933, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=531, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=35049, PETRI_PLACES=485, PETRI_TRANSITIONS=1037} [2023-08-25 20:02:10,253 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 435 predicate places. [2023-08-25 20:02:10,253 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 1037 transitions, 35049 flow [2023-08-25 20:02:10,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 80.39393939393939) internal successors, (2653), 33 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states 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 20:02:10,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:02:10,254 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:02:10,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-08-25 20:02:10,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-08-25 20:02:10,461 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:02:10,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:02:10,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1459214952, now seen corresponding path program 44 times [2023-08-25 20:02:10,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:02:10,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697898630] [2023-08-25 20:02:10,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:02:10,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:02:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:02:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:02:11,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:02:11,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697898630] [2023-08-25 20:02:11,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697898630] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:02:11,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251077959] [2023-08-25 20:02:11,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 20:02:11,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:02:11,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:02:11,293 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:02:11,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-08-25 20:02:11,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:02:11,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:02:11,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 111 conjunts are in the unsatisfiable core [2023-08-25 20:02:11,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:02:12,094 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:02:12,094 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 31 treesize of output 19 [2023-08-25 20:02:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:02:12,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:02:12,521 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:02:12,521 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 61 treesize of output 113 [2023-08-25 20:02:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:02:13,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251077959] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:02:13,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:02:13,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2023-08-25 20:02:13,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822637812] [2023-08-25 20:02:13,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:02:13,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-25 20:02:13,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:02:13,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-25 20:02:13,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1276, Unknown=0, NotChecked=0, Total=1482 [2023-08-25 20:02:13,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 20:02:13,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 1037 transitions, 35049 flow. Second operand has 39 states, 39 states have (on average 98.71794871794872) internal successors, (3850), 39 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states 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 20:02:13,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:02:13,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 20:02:13,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:02:17,529 INFO L124 PetriNetUnfolderBase]: 2878/7129 cut-off events. [2023-08-25 20:02:17,529 INFO L125 PetriNetUnfolderBase]: For 361648/362316 co-relation queries the response was YES. [2023-08-25 20:02:17,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76245 conditions, 7129 events. 2878/7129 cut-off events. For 361648/362316 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 63736 event pairs, 168 based on Foata normal form. 115/7244 useless extension candidates. Maximal degree in co-relation 76096. Up to 3787 conditions per place. [2023-08-25 20:02:17,657 INFO L140 encePairwiseOnDemand]: 298/309 looper letters, 948 selfloop transitions, 320 changer transitions 7/1286 dead transitions. [2023-08-25 20:02:17,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 1286 transitions, 44626 flow [2023-08-25 20:02:17,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-25 20:02:17,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-25 20:02:17,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4567 transitions. [2023-08-25 20:02:17,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32844300611290905 [2023-08-25 20:02:17,660 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4567 transitions. [2023-08-25 20:02:17,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4567 transitions. [2023-08-25 20:02:17,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:02:17,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4567 transitions. [2023-08-25 20:02:17,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 101.4888888888889) internal successors, (4567), 45 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states 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 20:02:17,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 309.0) internal successors, (14214), 46 states have internal predecessors, (14214), 0 states have call successors, (0), 0 states 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 20:02:17,669 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 309.0) internal successors, (14214), 46 states have internal predecessors, (14214), 0 states have call successors, (0), 0 states 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 20:02:17,669 INFO L175 Difference]: Start difference. First operand has 485 places, 1037 transitions, 35049 flow. Second operand 45 states and 4567 transitions. [2023-08-25 20:02:17,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 1286 transitions, 44626 flow [2023-08-25 20:02:19,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 1286 transitions, 42315 flow, removed 1014 selfloop flow, removed 23 redundant places. [2023-08-25 20:02:19,721 INFO L231 Difference]: Finished difference. Result has 517 places, 1184 transitions, 39440 flow [2023-08-25 20:02:19,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=33012, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1037, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=39440, PETRI_PLACES=517, PETRI_TRANSITIONS=1184} [2023-08-25 20:02:19,722 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 467 predicate places. [2023-08-25 20:02:19,722 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 1184 transitions, 39440 flow [2023-08-25 20:02:19,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 98.71794871794872) internal successors, (3850), 39 states have internal predecessors, (3850), 0 states have call successors, (0), 0 states 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 20:02:19,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:02:19,723 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:02:19,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-08-25 20:02:19,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:02:19,929 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:02:19,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:02:19,929 INFO L85 PathProgramCache]: Analyzing trace with hash -344917158, now seen corresponding path program 45 times [2023-08-25 20:02:19,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:02:19,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439340815] [2023-08-25 20:02:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:02:19,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:02:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:02:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:02:21,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:02:21,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439340815] [2023-08-25 20:02:21,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439340815] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:02:21,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419879674] [2023-08-25 20:02:21,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 20:02:21,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:02:21,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:02:21,038 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:02:21,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-08-25 20:02:23,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-25 20:02:23,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:02:23,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 123 conjunts are in the unsatisfiable core [2023-08-25 20:02:23,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:02:23,546 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 11 treesize of output 7 [2023-08-25 20:02:23,579 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 20:02:23,610 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 20:02:23,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 20:02:23,998 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:02:23,999 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 35 [2023-08-25 20:02:24,071 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:02:24,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:02:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:02:24,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419879674] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:02:24,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:02:24,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 14] total 43 [2023-08-25 20:02:24,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288344949] [2023-08-25 20:02:24,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:02:24,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-08-25 20:02:24,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:02:24,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-08-25 20:02:24,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1730, Unknown=0, NotChecked=0, Total=1980 [2023-08-25 20:02:24,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 20:02:24,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 1184 transitions, 39440 flow. Second operand has 45 states, 45 states have (on average 79.73333333333333) internal successors, (3588), 45 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 20:02:24,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:02:24,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 20:02:24,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:02:40,079 INFO L124 PetriNetUnfolderBase]: 11989/24010 cut-off events. [2023-08-25 20:02:40,079 INFO L125 PetriNetUnfolderBase]: For 1123786/1125246 co-relation queries the response was YES. [2023-08-25 20:02:40,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260241 conditions, 24010 events. 11989/24010 cut-off events. For 1123786/1125246 co-relation queries the response was YES. Maximal size of possible extension queue 967. Compared 222754 event pairs, 250 based on Foata normal form. 604/24614 useless extension candidates. Maximal degree in co-relation 260081. Up to 10072 conditions per place. [2023-08-25 20:02:41,001 INFO L140 encePairwiseOnDemand]: 297/309 looper letters, 743 selfloop transitions, 1175 changer transitions 23/1944 dead transitions. [2023-08-25 20:02:41,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 1944 transitions, 54599 flow [2023-08-25 20:02:41,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-08-25 20:02:41,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2023-08-25 20:02:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 7326 transitions. [2023-08-25 20:02:41,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27892632781267845 [2023-08-25 20:02:41,005 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 7326 transitions. [2023-08-25 20:02:41,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 7326 transitions. [2023-08-25 20:02:41,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:02:41,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 7326 transitions. [2023-08-25 20:02:41,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 86.18823529411765) internal successors, (7326), 85 states have internal predecessors, (7326), 0 states have call successors, (0), 0 states 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 20:02:41,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 309.0) internal successors, (26574), 86 states have internal predecessors, (26574), 0 states have call successors, (0), 0 states 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 20:02:41,023 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 309.0) internal successors, (26574), 86 states have internal predecessors, (26574), 0 states have call successors, (0), 0 states 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 20:02:41,023 INFO L175 Difference]: Start difference. First operand has 517 places, 1184 transitions, 39440 flow. Second operand 85 states and 7326 transitions. [2023-08-25 20:02:41,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 1944 transitions, 54599 flow [2023-08-25 20:02:52,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 1944 transitions, 53852 flow, removed 248 selfloop flow, removed 16 redundant places. [2023-08-25 20:02:52,475 INFO L231 Difference]: Finished difference. Result has 603 places, 1487 transitions, 51823 flow [2023-08-25 20:02:52,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=38735, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=885, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=51823, PETRI_PLACES=603, PETRI_TRANSITIONS=1487} [2023-08-25 20:02:52,476 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 553 predicate places. [2023-08-25 20:02:52,476 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 1487 transitions, 51823 flow [2023-08-25 20:02:52,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 79.73333333333333) internal successors, (3588), 45 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states 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 20:02:52,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:02:52,477 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:02:52,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-08-25 20:02:52,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:02:52,679 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:02:52,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:02:52,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1947367196, now seen corresponding path program 46 times [2023-08-25 20:02:52,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:02:52,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421011274] [2023-08-25 20:02:52,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:02:52,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:02:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:02:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:02:53,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:02:53,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421011274] [2023-08-25 20:02:53,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421011274] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:02:53,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926645523] [2023-08-25 20:02:53,629 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 20:02:53,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:02:53,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:02:53,630 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:02:53,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-08-25 20:02:54,012 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 20:02:54,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:02:54,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 120 conjunts are in the unsatisfiable core [2023-08-25 20:02:54,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:02:54,098 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 13 treesize of output 9 [2023-08-25 20:02:54,130 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 20:02:54,158 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 20:02:54,440 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:02:54,440 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 14 [2023-08-25 20:02:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:02:54,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:02:57,054 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork0_~i~0#1_296| Int) (v_ArrVal_6073 (Array Int Int))) (or (<= c_~N~0 |v_thread1Thread1of1ForFork0_~i~0#1_296|) (< (+ |v_thread1Thread1of1ForFork0_~i~0#1_296| 1) c_~N~0) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_6073) c_~A~0.base))) (= (+ (select .cse0 (+ (* |v_thread1Thread1of1ForFork0_~i~0#1_296| 4) c_~A~0.offset)) c_~counter~0) (select .cse0 (+ c_~A~0.offset 8)))))) is different from false [2023-08-25 20:02:57,125 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:02:57,125 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2023-08-25 20:02:57,132 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:02:57,132 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 94 treesize of output 88 [2023-08-25 20:02:57,139 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:02:57,139 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 80 treesize of output 68 [2023-08-25 20:02:57,146 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:02:57,147 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 34 treesize of output 33 [2023-08-25 20:02:57,314 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:02:57,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926645523] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:02:57,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:02:57,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 42 [2023-08-25 20:02:57,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296088312] [2023-08-25 20:02:57,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:02:57,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-08-25 20:02:57,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:02:57,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-08-25 20:02:57,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1631, Unknown=1, NotChecked=82, Total=1892 [2023-08-25 20:02:57,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 20:02:57,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 1487 transitions, 51823 flow. Second operand has 44 states, 44 states have (on average 79.95454545454545) internal successors, (3518), 44 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states 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 20:02:57,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:02:57,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 20:02:57,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:03:10,556 INFO L124 PetriNetUnfolderBase]: 12318/24604 cut-off events. [2023-08-25 20:03:10,556 INFO L125 PetriNetUnfolderBase]: For 1326796/1328280 co-relation queries the response was YES. [2023-08-25 20:03:10,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281513 conditions, 24604 events. 12318/24604 cut-off events. For 1326796/1328280 co-relation queries the response was YES. Maximal size of possible extension queue 980. Compared 228397 event pairs, 673 based on Foata normal form. 296/24896 useless extension candidates. Maximal degree in co-relation 281336. Up to 18274 conditions per place. [2023-08-25 20:03:11,039 INFO L140 encePairwiseOnDemand]: 300/309 looper letters, 1487 selfloop transitions, 182 changer transitions 3/1675 dead transitions. [2023-08-25 20:03:11,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 1675 transitions, 57988 flow [2023-08-25 20:03:11,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-25 20:03:11,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-25 20:03:11,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2429 transitions. [2023-08-25 20:03:11,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2807443365695793 [2023-08-25 20:03:11,041 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2429 transitions. [2023-08-25 20:03:11,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2429 transitions. [2023-08-25 20:03:11,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:03:11,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2429 transitions. [2023-08-25 20:03:11,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 86.75) internal successors, (2429), 28 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states 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 20:03:11,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 309.0) internal successors, (8961), 29 states have internal predecessors, (8961), 0 states have call successors, (0), 0 states 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 20:03:11,047 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 309.0) internal successors, (8961), 29 states have internal predecessors, (8961), 0 states have call successors, (0), 0 states 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 20:03:11,047 INFO L175 Difference]: Start difference. First operand has 603 places, 1487 transitions, 51823 flow. Second operand 28 states and 2429 transitions. [2023-08-25 20:03:11,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 1675 transitions, 57988 flow [2023-08-25 20:03:26,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 1675 transitions, 55070 flow, removed 992 selfloop flow, removed 32 redundant places. [2023-08-25 20:03:26,131 INFO L231 Difference]: Finished difference. Result has 600 places, 1518 transitions, 51085 flow [2023-08-25 20:03:26,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=48992, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=51085, PETRI_PLACES=600, PETRI_TRANSITIONS=1518} [2023-08-25 20:03:26,132 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 550 predicate places. [2023-08-25 20:03:26,132 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 1518 transitions, 51085 flow [2023-08-25 20:03:26,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 79.95454545454545) internal successors, (3518), 44 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states 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 20:03:26,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:03:26,133 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:03:26,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-08-25 20:03:26,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-08-25 20:03:26,339 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:03:26,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:03:26,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1359555302, now seen corresponding path program 47 times [2023-08-25 20:03:26,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:03:26,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419851205] [2023-08-25 20:03:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:03:26,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:03:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:03:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:03:27,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:03:27,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419851205] [2023-08-25 20:03:27,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419851205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:03:27,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154067025] [2023-08-25 20:03:27,283 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 20:03:27,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:03:27,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:03:27,286 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:03:27,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-08-25 20:03:28,494 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-08-25 20:03:28,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:03:28,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 99 conjunts are in the unsatisfiable core [2023-08-25 20:03:28,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:03:28,766 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 20:03:28,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:03:28,931 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:03:28,931 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 62 treesize of output 95 [2023-08-25 20:03:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 20:03:29,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154067025] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:03:29,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:03:29,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 8] total 30 [2023-08-25 20:03:29,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829877405] [2023-08-25 20:03:29,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:03:29,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 20:03:29,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:03:29,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 20:03:29,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2023-08-25 20:03:29,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 20:03:29,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 1518 transitions, 51085 flow. Second operand has 32 states, 32 states have (on average 98.96875) internal successors, (3167), 32 states have internal predecessors, (3167), 0 states have call successors, (0), 0 states 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 20:03:29,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:03:29,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 20:03:29,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:03:34,656 INFO L124 PetriNetUnfolderBase]: 3677/9081 cut-off events. [2023-08-25 20:03:34,656 INFO L125 PetriNetUnfolderBase]: For 438640/439132 co-relation queries the response was YES. [2023-08-25 20:03:34,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97087 conditions, 9081 events. 3677/9081 cut-off events. For 438640/439132 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 84647 event pairs, 234 based on Foata normal form. 173/9253 useless extension candidates. Maximal degree in co-relation 96912. Up to 5164 conditions per place. [2023-08-25 20:03:34,806 INFO L140 encePairwiseOnDemand]: 299/309 looper letters, 1179 selfloop transitions, 481 changer transitions 5/1676 dead transitions. [2023-08-25 20:03:34,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 1676 transitions, 59326 flow [2023-08-25 20:03:34,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-25 20:03:34,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-25 20:03:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3376 transitions. [2023-08-25 20:03:34,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3310777679709719 [2023-08-25 20:03:34,809 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3376 transitions. [2023-08-25 20:03:34,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3376 transitions. [2023-08-25 20:03:34,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:03:34,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3376 transitions. [2023-08-25 20:03:34,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 102.3030303030303) internal successors, (3376), 33 states have internal predecessors, (3376), 0 states have call successors, (0), 0 states 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 20:03:34,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 309.0) internal successors, (10506), 34 states have internal predecessors, (10506), 0 states have call successors, (0), 0 states 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 20:03:34,815 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 309.0) internal successors, (10506), 34 states have internal predecessors, (10506), 0 states have call successors, (0), 0 states 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 20:03:34,815 INFO L175 Difference]: Start difference. First operand has 600 places, 1518 transitions, 51085 flow. Second operand 33 states and 3376 transitions. [2023-08-25 20:03:34,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 1676 transitions, 59326 flow [2023-08-25 20:03:37,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 1676 transitions, 58678 flow, removed 249 selfloop flow, removed 18 redundant places. [2023-08-25 20:03:37,877 INFO L231 Difference]: Finished difference. Result has 621 places, 1590 transitions, 55199 flow [2023-08-25 20:03:37,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=50437, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=426, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1069, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=55199, PETRI_PLACES=621, PETRI_TRANSITIONS=1590} [2023-08-25 20:03:37,878 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 571 predicate places. [2023-08-25 20:03:37,878 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 1590 transitions, 55199 flow [2023-08-25 20:03:37,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 98.96875) internal successors, (3167), 32 states have internal predecessors, (3167), 0 states have call successors, (0), 0 states 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 20:03:37,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:03:37,878 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:03:37,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-08-25 20:03:38,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-08-25 20:03:38,086 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:03:38,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:03:38,087 INFO L85 PathProgramCache]: Analyzing trace with hash 22455606, now seen corresponding path program 48 times [2023-08-25 20:03:38,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:03:38,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211849585] [2023-08-25 20:03:38,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:03:38,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:03:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:03:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:03:39,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:03:39,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211849585] [2023-08-25 20:03:39,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211849585] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:03:39,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791662811] [2023-08-25 20:03:39,156 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 20:03:39,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:03:39,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:03:39,157 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:03:39,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-08-25 20:03:39,879 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 20:03:39,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:03:39,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 106 conjunts are in the unsatisfiable core [2023-08-25 20:03:39,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:03:40,318 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:03:40,318 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 17 treesize of output 14 [2023-08-25 20:03:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:03:40,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:03:41,414 INFO L322 Elim1Store]: treesize reduction 40, result has 65.8 percent of original size [2023-08-25 20:03:41,414 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 60 treesize of output 87 [2023-08-25 20:03:41,534 INFO L322 Elim1Store]: treesize reduction 86, result has 26.5 percent of original size [2023-08-25 20:03:41,534 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 61 treesize of output 42 [2023-08-25 20:03:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:03:41,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791662811] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:03:41,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:03:41,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 12] total 39 [2023-08-25 20:03:41,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090111273] [2023-08-25 20:03:41,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:03:41,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-25 20:03:41,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:03:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-25 20:03:41,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1439, Unknown=0, NotChecked=0, Total=1640 [2023-08-25 20:03:41,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 20:03:41,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 1590 transitions, 55199 flow. Second operand has 41 states, 41 states have (on average 79.85365853658537) internal successors, (3274), 41 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states 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 20:03:41,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:03:41,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 20:03:41,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:04:02,542 INFO L124 PetriNetUnfolderBase]: 13900/27553 cut-off events. [2023-08-25 20:04:02,542 INFO L125 PetriNetUnfolderBase]: For 1425734/1427384 co-relation queries the response was YES. [2023-08-25 20:04:02,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316965 conditions, 27553 events. 13900/27553 cut-off events. For 1425734/1427384 co-relation queries the response was YES. Maximal size of possible extension queue 1069. Compared 256974 event pairs, 331 based on Foata normal form. 681/28234 useless extension candidates. Maximal degree in co-relation 316782. Up to 12979 conditions per place. [2023-08-25 20:04:03,084 INFO L140 encePairwiseOnDemand]: 296/309 looper letters, 1045 selfloop transitions, 1008 changer transitions 5/2061 dead transitions. [2023-08-25 20:04:03,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 2061 transitions, 65686 flow [2023-08-25 20:04:03,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-08-25 20:04:03,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-08-25 20:04:03,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 4897 transitions. [2023-08-25 20:04:03,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28299815071659734 [2023-08-25 20:04:03,098 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 4897 transitions. [2023-08-25 20:04:03,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 4897 transitions. [2023-08-25 20:04:03,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:04:03,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 4897 transitions. [2023-08-25 20:04:03,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 87.44642857142857) internal successors, (4897), 56 states have internal predecessors, (4897), 0 states have call successors, (0), 0 states 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 20:04:03,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 309.0) internal successors, (17613), 57 states have internal predecessors, (17613), 0 states have call successors, (0), 0 states 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 20:04:03,111 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 309.0) internal successors, (17613), 57 states have internal predecessors, (17613), 0 states have call successors, (0), 0 states 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 20:04:03,111 INFO L175 Difference]: Start difference. First operand has 621 places, 1590 transitions, 55199 flow. Second operand 56 states and 4897 transitions. [2023-08-25 20:04:03,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 676 places, 2061 transitions, 65686 flow [2023-08-25 20:04:23,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 658 places, 2061 transitions, 64181 flow, removed 647 selfloop flow, removed 18 redundant places. [2023-08-25 20:04:23,069 INFO L231 Difference]: Finished difference. Result has 670 places, 1693 transitions, 61961 flow [2023-08-25 20:04:23,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=53700, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=913, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=61961, PETRI_PLACES=670, PETRI_TRANSITIONS=1693} [2023-08-25 20:04:23,070 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 620 predicate places. [2023-08-25 20:04:23,070 INFO L495 AbstractCegarLoop]: Abstraction has has 670 places, 1693 transitions, 61961 flow [2023-08-25 20:04:23,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 79.85365853658537) internal successors, (3274), 41 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states 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 20:04:23,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:04:23,071 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:04:23,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-08-25 20:04:23,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-08-25 20:04:23,279 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:04:23,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:04:23,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1524254818, now seen corresponding path program 49 times [2023-08-25 20:04:23,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:04:23,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481855739] [2023-08-25 20:04:23,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:04:23,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:04:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:04:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:04:24,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:04:24,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481855739] [2023-08-25 20:04:24,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481855739] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:04:24,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867015145] [2023-08-25 20:04:24,373 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 20:04:24,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:04:24,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:04:24,374 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:04:24,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-08-25 20:04:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:04:24,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 97 conjunts are in the unsatisfiable core [2023-08-25 20:04:24,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:04:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 20:04:25,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:04:25,309 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:04:25,309 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 62 treesize of output 95 [2023-08-25 20:04:25,449 INFO L322 Elim1Store]: treesize reduction 72, result has 15.3 percent of original size [2023-08-25 20:04:25,449 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 63 treesize of output 24 [2023-08-25 20:04:25,526 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 20:04:25,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867015145] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:04:25,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:04:25,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 8] total 31 [2023-08-25 20:04:25,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773742732] [2023-08-25 20:04:25,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:04:25,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-25 20:04:25,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:04:25,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-25 20:04:25,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2023-08-25 20:04:25,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 20:04:25,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 1693 transitions, 61961 flow. Second operand has 33 states, 33 states have (on average 80.39393939393939) internal successors, (2653), 33 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states 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 20:04:25,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:04:25,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 20:04:25,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:04:43,360 INFO L124 PetriNetUnfolderBase]: 14579/28758 cut-off events. [2023-08-25 20:04:43,360 INFO L125 PetriNetUnfolderBase]: For 1714663/1716409 co-relation queries the response was YES. [2023-08-25 20:04:43,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351428 conditions, 28758 events. 14579/28758 cut-off events. For 1714663/1716409 co-relation queries the response was YES. Maximal size of possible extension queue 1099. Compared 268290 event pairs, 554 based on Foata normal form. 605/29355 useless extension candidates. Maximal degree in co-relation 351234. Up to 14462 conditions per place. [2023-08-25 20:04:43,987 INFO L140 encePairwiseOnDemand]: 298/309 looper letters, 1034 selfloop transitions, 991 changer transitions 3/2031 dead transitions. [2023-08-25 20:04:43,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 2031 transitions, 72070 flow [2023-08-25 20:04:43,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-25 20:04:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-25 20:04:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3430 transitions. [2023-08-25 20:04:43,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2846236826819351 [2023-08-25 20:04:43,990 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3430 transitions. [2023-08-25 20:04:43,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3430 transitions. [2023-08-25 20:04:43,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:04:43,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3430 transitions. [2023-08-25 20:04:43,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 87.94871794871794) internal successors, (3430), 39 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states 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 20:04:43,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 309.0) internal successors, (12360), 40 states have internal predecessors, (12360), 0 states have call successors, (0), 0 states 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 20:04:43,997 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 309.0) internal successors, (12360), 40 states have internal predecessors, (12360), 0 states have call successors, (0), 0 states 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 20:04:43,997 INFO L175 Difference]: Start difference. First operand has 670 places, 1693 transitions, 61961 flow. Second operand 39 states and 3430 transitions. [2023-08-25 20:04:43,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 2031 transitions, 72070 flow [2023-08-25 20:05:08,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 676 places, 2031 transitions, 69556 flow, removed 1033 selfloop flow, removed 32 redundant places. [2023-08-25 20:05:08,363 INFO L231 Difference]: Finished difference. Result has 688 places, 1776 transitions, 67281 flow [2023-08-25 20:05:08,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=59815, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=920, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=751, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=67281, PETRI_PLACES=688, PETRI_TRANSITIONS=1776} [2023-08-25 20:05:08,364 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 638 predicate places. [2023-08-25 20:05:08,364 INFO L495 AbstractCegarLoop]: Abstraction has has 688 places, 1776 transitions, 67281 flow [2023-08-25 20:05:08,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 80.39393939393939) internal successors, (2653), 33 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states 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 20:05:08,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:05:08,365 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:05:08,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-08-25 20:05:08,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-08-25 20:05:08,571 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:05:08,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:05:08,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2107709836, now seen corresponding path program 50 times [2023-08-25 20:05:08,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:05:08,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510848190] [2023-08-25 20:05:08,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:05:08,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:05:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:05:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:05:09,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:05:09,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510848190] [2023-08-25 20:05:09,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510848190] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:05:09,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716537061] [2023-08-25 20:05:09,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 20:05:09,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:05:09,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:05:09,358 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:05:09,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-08-25 20:05:09,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 20:05:09,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:05:09,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 103 conjunts are in the unsatisfiable core [2023-08-25 20:05:09,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:05:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:05:10,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:05:10,350 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:05:10,351 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 62 treesize of output 95 [2023-08-25 20:05:10,488 INFO L322 Elim1Store]: treesize reduction 72, result has 15.3 percent of original size [2023-08-25 20:05:10,488 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 63 treesize of output 24 [2023-08-25 20:05:10,572 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 20:05:10,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716537061] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:05:10,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:05:10,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 8] total 32 [2023-08-25 20:05:10,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195166894] [2023-08-25 20:05:10,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:05:10,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-25 20:05:10,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:05:10,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-25 20:05:10,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2023-08-25 20:05:10,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 20:05:10,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 1776 transitions, 67281 flow. Second operand has 34 states, 34 states have (on average 98.91176470588235) internal successors, (3363), 34 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states 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 20:05:10,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:05:10,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 20:05:10,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:05:17,339 INFO L124 PetriNetUnfolderBase]: 4241/10265 cut-off events. [2023-08-25 20:05:17,340 INFO L125 PetriNetUnfolderBase]: For 624948/625586 co-relation queries the response was YES. [2023-08-25 20:05:17,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123836 conditions, 10265 events. 4241/10265 cut-off events. For 624948/625586 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 96884 event pairs, 164 based on Foata normal form. 194/10456 useless extension candidates. Maximal degree in co-relation 123631. Up to 4802 conditions per place. [2023-08-25 20:05:17,908 INFO L140 encePairwiseOnDemand]: 299/309 looper letters, 918 selfloop transitions, 966 changer transitions 2/1897 dead transitions. [2023-08-25 20:05:17,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 1897 transitions, 74757 flow [2023-08-25 20:05:17,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-25 20:05:17,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-25 20:05:17,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3080 transitions. [2023-08-25 20:05:17,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225458468176916 [2023-08-25 20:05:17,910 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3080 transitions. [2023-08-25 20:05:17,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3080 transitions. [2023-08-25 20:05:17,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:05:17,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3080 transitions. [2023-08-25 20:05:17,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 102.66666666666667) internal successors, (3080), 30 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 20:05:17,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 309.0) internal successors, (9579), 31 states have internal predecessors, (9579), 0 states have call successors, (0), 0 states 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 20:05:17,916 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 309.0) internal successors, (9579), 31 states have internal predecessors, (9579), 0 states have call successors, (0), 0 states 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 20:05:17,916 INFO L175 Difference]: Start difference. First operand has 688 places, 1776 transitions, 67281 flow. Second operand 30 states and 3080 transitions. [2023-08-25 20:05:17,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 1897 transitions, 74757 flow [2023-08-25 20:05:24,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 700 places, 1897 transitions, 72693 flow, removed 936 selfloop flow, removed 17 redundant places. [2023-08-25 20:05:24,133 INFO L231 Difference]: Finished difference. Result has 705 places, 1815 transitions, 70597 flow [2023-08-25 20:05:24,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=65219, PETRI_DIFFERENCE_MINUEND_PLACES=671, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=928, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=844, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=70597, PETRI_PLACES=705, PETRI_TRANSITIONS=1815} [2023-08-25 20:05:24,134 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 655 predicate places. [2023-08-25 20:05:24,134 INFO L495 AbstractCegarLoop]: Abstraction has has 705 places, 1815 transitions, 70597 flow [2023-08-25 20:05:24,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 98.91176470588235) internal successors, (3363), 34 states have internal predecessors, (3363), 0 states have call successors, (0), 0 states 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 20:05:24,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:05:24,134 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:05:24,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-08-25 20:05:24,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-08-25 20:05:24,341 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:05:24,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:05:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1297366160, now seen corresponding path program 51 times [2023-08-25 20:05:24,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:05:24,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24340046] [2023-08-25 20:05:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:05:24,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:05:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:05:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:05:25,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:05:25,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24340046] [2023-08-25 20:05:25,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24340046] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:05:25,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526957941] [2023-08-25 20:05:25,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 20:05:25,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:05:25,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:05:25,566 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:05:25,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-08-25 20:05:28,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-25 20:05:28,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:05:28,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 108 conjunts are in the unsatisfiable core [2023-08-25 20:05:28,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:05:28,602 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:05:28,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 45 [2023-08-25 20:05:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:05:28,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:05:29,213 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:05:29,214 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 22 treesize of output 15 [2023-08-25 20:05:29,220 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 20:05:29,221 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 10 [2023-08-25 20:05:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 20:05:29,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526957941] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:05:29,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:05:29,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 38 [2023-08-25 20:05:29,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165041903] [2023-08-25 20:05:29,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:05:29,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-25 20:05:29,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:05:29,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-25 20:05:29,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1337, Unknown=0, NotChecked=0, Total=1560 [2023-08-25 20:05:29,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 20:05:29,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 705 places, 1815 transitions, 70597 flow. Second operand has 40 states, 40 states have (on average 80.125) internal successors, (3205), 40 states have internal predecessors, (3205), 0 states have call successors, (0), 0 states 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 20:05:29,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:05:29,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 20:05:29,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:05:51,359 INFO L124 PetriNetUnfolderBase]: 15644/30831 cut-off events. [2023-08-25 20:05:51,359 INFO L125 PetriNetUnfolderBase]: For 2023697/2025629 co-relation queries the response was YES. [2023-08-25 20:05:52,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391860 conditions, 30831 events. 15644/30831 cut-off events. For 2023697/2025629 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 290257 event pairs, 457 based on Foata normal form. 663/31494 useless extension candidates. Maximal degree in co-relation 391651. Up to 15346 conditions per place. [2023-08-25 20:05:53,090 INFO L140 encePairwiseOnDemand]: 296/309 looper letters, 1028 selfloop transitions, 1135 changer transitions 14/2180 dead transitions. [2023-08-25 20:05:53,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 754 places, 2180 transitions, 80084 flow [2023-08-25 20:05:53,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-25 20:05:53,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-25 20:05:53,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 4329 transitions. [2023-08-25 20:05:53,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28019417475728153 [2023-08-25 20:05:53,094 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 4329 transitions. [2023-08-25 20:05:53,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 4329 transitions. [2023-08-25 20:05:53,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:05:53,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 4329 transitions. [2023-08-25 20:05:53,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 86.58) internal successors, (4329), 50 states have internal predecessors, (4329), 0 states have call successors, (0), 0 states 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 20:05:53,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 309.0) internal successors, (15759), 51 states have internal predecessors, (15759), 0 states have call successors, (0), 0 states 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 20:05:53,105 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 309.0) internal successors, (15759), 51 states have internal predecessors, (15759), 0 states have call successors, (0), 0 states 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 20:05:53,105 INFO L175 Difference]: Start difference. First operand has 705 places, 1815 transitions, 70597 flow. Second operand 50 states and 4329 transitions. [2023-08-25 20:05:53,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 754 places, 2180 transitions, 80084 flow [2023-08-25 20:06:22,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 740 places, 2180 transitions, 79023 flow, removed 433 selfloop flow, removed 14 redundant places. [2023-08-25 20:06:22,831 INFO L231 Difference]: Finished difference. Result has 751 places, 1899 transitions, 77327 flow [2023-08-25 20:06:22,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=69536, PETRI_DIFFERENCE_MINUEND_PLACES=691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1815, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1064, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=77327, PETRI_PLACES=751, PETRI_TRANSITIONS=1899} [2023-08-25 20:06:22,832 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 701 predicate places. [2023-08-25 20:06:22,832 INFO L495 AbstractCegarLoop]: Abstraction has has 751 places, 1899 transitions, 77327 flow [2023-08-25 20:06:22,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 80.125) internal successors, (3205), 40 states have internal predecessors, (3205), 0 states have call successors, (0), 0 states 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 20:06:22,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:22,833 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:06:22,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-08-25 20:06:23,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-08-25 20:06:23,042 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:06:23,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:23,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1127050154, now seen corresponding path program 52 times [2023-08-25 20:06:23,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:23,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354868870] [2023-08-25 20:06:23,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:23,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:23,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:23,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354868870] [2023-08-25 20:06:23,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354868870] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:06:23,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383575342] [2023-08-25 20:06:23,993 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 20:06:23,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:06:23,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:06:23,994 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:06:23,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-08-25 20:06:24,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 20:06:24,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:06:24,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 111 conjunts are in the unsatisfiable core [2023-08-25 20:06:24,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:06:24,872 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:06:24,873 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 15 treesize of output 14 [2023-08-25 20:06:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:24,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:06:25,544 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:06:25,545 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 62 treesize of output 114 [2023-08-25 20:06:25,979 INFO L322 Elim1Store]: treesize reduction 48, result has 53.4 percent of original size [2023-08-25 20:06:25,980 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 61 treesize of output 65 [2023-08-25 20:06:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:26,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383575342] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:06:26,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:06:26,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 41 [2023-08-25 20:06:26,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161700550] [2023-08-25 20:06:26,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:06:26,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-08-25 20:06:26,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:26,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-08-25 20:06:26,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=1573, Unknown=0, NotChecked=0, Total=1806 [2023-08-25 20:06:26,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 20:06:26,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 751 places, 1899 transitions, 77327 flow. Second operand has 43 states, 43 states have (on average 98.55813953488372) internal successors, (4238), 43 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states 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 20:06:26,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:26,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 20:06:26,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:06:35,775 INFO L124 PetriNetUnfolderBase]: 4675/11429 cut-off events. [2023-08-25 20:06:35,775 INFO L125 PetriNetUnfolderBase]: For 800585/801208 co-relation queries the response was YES. [2023-08-25 20:06:36,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144408 conditions, 11429 events. 4675/11429 cut-off events. For 800585/801208 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 111008 event pairs, 190 based on Foata normal form. 174/11600 useless extension candidates. Maximal degree in co-relation 144188. Up to 5210 conditions per place. [2023-08-25 20:06:36,121 INFO L140 encePairwiseOnDemand]: 298/309 looper letters, 980 selfloop transitions, 1085 changer transitions 10/2086 dead transitions. [2023-08-25 20:06:36,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 785 places, 2086 transitions, 87461 flow [2023-08-25 20:06:36,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-25 20:06:36,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-25 20:06:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3664 transitions. [2023-08-25 20:06:36,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3293779216109313 [2023-08-25 20:06:36,124 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3664 transitions. [2023-08-25 20:06:36,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3664 transitions. [2023-08-25 20:06:36,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:06:36,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3664 transitions. [2023-08-25 20:06:36,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 101.77777777777777) internal successors, (3664), 36 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:06:36,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 309.0) internal successors, (11433), 37 states have internal predecessors, (11433), 0 states have call successors, (0), 0 states 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 20:06:36,131 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 309.0) internal successors, (11433), 37 states have internal predecessors, (11433), 0 states have call successors, (0), 0 states 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 20:06:36,132 INFO L175 Difference]: Start difference. First operand has 751 places, 1899 transitions, 77327 flow. Second operand 36 states and 3664 transitions. [2023-08-25 20:06:36,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 785 places, 2086 transitions, 87461 flow [2023-08-25 20:06:43,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 759 places, 2086 transitions, 85592 flow, removed 740 selfloop flow, removed 26 redundant places. [2023-08-25 20:06:43,364 INFO L231 Difference]: Finished difference. Result has 764 places, 1987 transitions, 83762 flow [2023-08-25 20:06:43,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=75713, PETRI_DIFFERENCE_MINUEND_PLACES=724, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1003, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=888, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=83762, PETRI_PLACES=764, PETRI_TRANSITIONS=1987} [2023-08-25 20:06:43,365 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 714 predicate places. [2023-08-25 20:06:43,365 INFO L495 AbstractCegarLoop]: Abstraction has has 764 places, 1987 transitions, 83762 flow [2023-08-25 20:06:43,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 98.55813953488372) internal successors, (4238), 43 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states 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 20:06:43,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:06:43,366 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:06:43,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-08-25 20:06:43,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:06:43,573 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:06:43,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:06:43,573 INFO L85 PathProgramCache]: Analyzing trace with hash -573041262, now seen corresponding path program 53 times [2023-08-25 20:06:43,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:06:43,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324588334] [2023-08-25 20:06:43,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:06:43,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:06:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:06:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:06:44,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:06:44,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324588334] [2023-08-25 20:06:44,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324588334] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:06:44,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694598352] [2023-08-25 20:06:44,617 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 20:06:44,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:06:44,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:06:44,618 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:06:44,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-08-25 20:06:45,959 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-25 20:06:45,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:06:45,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 97 conjunts are in the unsatisfiable core [2023-08-25 20:06:45,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:06:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 20:06:46,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:06:46,414 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:06:46,415 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 62 treesize of output 95 [2023-08-25 20:06:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 20:06:46,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694598352] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:06:46,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:06:46,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 8] total 31 [2023-08-25 20:06:46,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537076274] [2023-08-25 20:06:46,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:06:46,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-25 20:06:46,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:06:46,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-25 20:06:46,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2023-08-25 20:06:46,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 20:06:46,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 764 places, 1987 transitions, 83762 flow. Second operand has 33 states, 33 states have (on average 80.15151515151516) internal successors, (2645), 33 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states 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 20:06:46,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:06:46,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 20:06:46,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:07:11,045 INFO L124 PetriNetUnfolderBase]: 17279/33910 cut-off events. [2023-08-25 20:07:11,046 INFO L125 PetriNetUnfolderBase]: For 2759238/2761626 co-relation queries the response was YES. [2023-08-25 20:07:11,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467048 conditions, 33910 events. 17279/33910 cut-off events. For 2759238/2761626 co-relation queries the response was YES. Maximal size of possible extension queue 1358. Compared 322644 event pairs, 644 based on Foata normal form. 665/34561 useless extension candidates. Maximal degree in co-relation 466824. Up to 17774 conditions per place. [2023-08-25 20:07:12,069 INFO L140 encePairwiseOnDemand]: 298/309 looper letters, 1113 selfloop transitions, 1219 changer transitions 7/2342 dead transitions. [2023-08-25 20:07:12,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 2342 transitions, 95308 flow [2023-08-25 20:07:12,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-25 20:07:12,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-25 20:07:12,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3909 transitions. [2023-08-25 20:07:12,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28112189859762676 [2023-08-25 20:07:12,072 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3909 transitions. [2023-08-25 20:07:12,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3909 transitions. [2023-08-25 20:07:12,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:07:12,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3909 transitions. [2023-08-25 20:07:12,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 86.86666666666666) internal successors, (3909), 45 states have internal predecessors, (3909), 0 states have call successors, (0), 0 states 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 20:07:12,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 309.0) internal successors, (14214), 46 states have internal predecessors, (14214), 0 states have call successors, (0), 0 states 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 20:07:12,080 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 309.0) internal successors, (14214), 46 states have internal predecessors, (14214), 0 states have call successors, (0), 0 states 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 20:07:12,080 INFO L175 Difference]: Start difference. First operand has 764 places, 1987 transitions, 83762 flow. Second operand 45 states and 3909 transitions. [2023-08-25 20:07:12,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 808 places, 2342 transitions, 95308 flow [2023-08-25 20:07:51,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 2342 transitions, 94554 flow, removed 302 selfloop flow, removed 23 redundant places. [2023-08-25 20:07:51,712 INFO L231 Difference]: Finished difference. Result has 799 places, 2088 transitions, 93207 flow [2023-08-25 20:07:51,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=83012, PETRI_DIFFERENCE_MINUEND_PLACES=741, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1987, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=827, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=93207, PETRI_PLACES=799, PETRI_TRANSITIONS=2088} [2023-08-25 20:07:51,714 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 749 predicate places. [2023-08-25 20:07:51,714 INFO L495 AbstractCegarLoop]: Abstraction has has 799 places, 2088 transitions, 93207 flow [2023-08-25 20:07:51,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 80.15151515151516) internal successors, (2645), 33 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states 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 20:07:51,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:07:51,714 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:07:51,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2023-08-25 20:07:51,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:07:51,922 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:07:51,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:07:51,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1818457628, now seen corresponding path program 54 times [2023-08-25 20:07:51,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:07:51,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206896297] [2023-08-25 20:07:51,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:07:51,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:07:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:07:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:07:53,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:07:53,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206896297] [2023-08-25 20:07:53,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206896297] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:07:53,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472122719] [2023-08-25 20:07:53,111 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 20:07:53,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:07:53,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:07:53,112 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:07:53,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-08-25 20:07:53,939 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 20:07:53,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 20:07:53,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 106 conjunts are in the unsatisfiable core [2023-08-25 20:07:53,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:07:54,351 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:07:54,351 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 17 treesize of output 14 [2023-08-25 20:07:54,398 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:07:54,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:07:54,940 INFO L322 Elim1Store]: treesize reduction 40, result has 65.8 percent of original size [2023-08-25 20:07:54,941 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 60 treesize of output 87 [2023-08-25 20:07:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 20:07:55,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472122719] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:07:55,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:07:55,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 12] total 39 [2023-08-25 20:07:55,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493489776] [2023-08-25 20:07:55,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:07:55,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-25 20:07:55,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:07:55,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-25 20:07:55,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2023-08-25 20:07:55,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 309 [2023-08-25 20:07:55,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 799 places, 2088 transitions, 93207 flow. Second operand has 41 states, 41 states have (on average 80.04878048780488) internal successors, (3282), 41 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states 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 20:07:55,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:07:55,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 309 [2023-08-25 20:07:55,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:08:22,849 INFO L124 PetriNetUnfolderBase]: 17906/35301 cut-off events. [2023-08-25 20:08:22,849 INFO L125 PetriNetUnfolderBase]: For 3218610/3221112 co-relation queries the response was YES. [2023-08-25 20:08:23,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506169 conditions, 35301 events. 17906/35301 cut-off events. For 3218610/3221112 co-relation queries the response was YES. Maximal size of possible extension queue 1427. Compared 339509 event pairs, 481 based on Foata normal form. 904/36205 useless extension candidates. Maximal degree in co-relation 505932. Up to 16344 conditions per place. [2023-08-25 20:08:24,124 INFO L140 encePairwiseOnDemand]: 298/309 looper letters, 1222 selfloop transitions, 1267 changer transitions 16/2508 dead transitions. [2023-08-25 20:08:24,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 853 places, 2508 transitions, 104595 flow [2023-08-25 20:08:24,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-25 20:08:24,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-25 20:08:24,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 4772 transitions. [2023-08-25 20:08:24,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2807884671962342 [2023-08-25 20:08:24,134 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 4772 transitions. [2023-08-25 20:08:24,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 4772 transitions. [2023-08-25 20:08:24,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:08:24,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 4772 transitions. [2023-08-25 20:08:24,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 86.76363636363637) internal successors, (4772), 55 states have internal predecessors, (4772), 0 states have call successors, (0), 0 states 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 20:08:24,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 309.0) internal successors, (17304), 56 states have internal predecessors, (17304), 0 states have call successors, (0), 0 states 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 20:08:24,146 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 309.0) internal successors, (17304), 56 states have internal predecessors, (17304), 0 states have call successors, (0), 0 states 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 20:08:24,146 INFO L175 Difference]: Start difference. First operand has 799 places, 2088 transitions, 93207 flow. Second operand 55 states and 4772 transitions. [2023-08-25 20:08:24,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 853 places, 2508 transitions, 104595 flow [2023-08-25 20:09:13,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 834 places, 2508 transitions, 102347 flow, removed 991 selfloop flow, removed 19 redundant places. [2023-08-25 20:09:14,072 INFO L231 Difference]: Finished difference. Result has 847 places, 2173 transitions, 100155 flow [2023-08-25 20:09:14,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=90961, PETRI_DIFFERENCE_MINUEND_PLACES=780, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2088, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=858, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=100155, PETRI_PLACES=847, PETRI_TRANSITIONS=2173} [2023-08-25 20:09:14,074 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 797 predicate places. [2023-08-25 20:09:14,074 INFO L495 AbstractCegarLoop]: Abstraction has has 847 places, 2173 transitions, 100155 flow [2023-08-25 20:09:14,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 80.04878048780488) internal successors, (3282), 41 states have internal predecessors, (3282), 0 states have call successors, (0), 0 states 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 20:09:14,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 20:09:14,074 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:09:14,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2023-08-25 20:09:14,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:09:14,281 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-25 20:09:14,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 20:09:14,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1728589744, now seen corresponding path program 55 times [2023-08-25 20:09:14,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 20:09:14,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486289835] [2023-08-25 20:09:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 20:09:14,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 20:09:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:09:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 20:09:15,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 20:09:15,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486289835] [2023-08-25 20:09:15,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486289835] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 20:09:15,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532285395] [2023-08-25 20:09:15,193 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 20:09:15,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:09:15,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 20:09:15,194 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 20:09:15,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-08-25 20:09:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 20:09:15,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 97 conjunts are in the unsatisfiable core [2023-08-25 20:09:15,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 20:09:15,891 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 20:09:15,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 20:09:16,033 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 20:09:16,033 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 62 treesize of output 95 [2023-08-25 20:09:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 20:09:16,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532285395] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 20:09:16,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 20:09:16,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 8] total 30 [2023-08-25 20:09:16,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931349052] [2023-08-25 20:09:16,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 20:09:16,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 20:09:16,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 20:09:16,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 20:09:16,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2023-08-25 20:09:16,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 309 [2023-08-25 20:09:16,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 847 places, 2173 transitions, 100155 flow. Second operand has 32 states, 32 states have (on average 99.0) internal successors, (3168), 32 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 20:09:16,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 20:09:16,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 309 [2023-08-25 20:09:16,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 20:09:27,200 INFO L124 PetriNetUnfolderBase]: 5260/12907 cut-off events. [2023-08-25 20:09:27,200 INFO L125 PetriNetUnfolderBase]: For 1242537/1243385 co-relation queries the response was YES. [2023-08-25 20:09:27,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181548 conditions, 12907 events. 5260/12907 cut-off events. For 1242537/1243385 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 128323 event pairs, 418 based on Foata normal form. 210/13114 useless extension candidates. Maximal degree in co-relation 181298. Up to 8300 conditions per place. [2023-08-25 20:09:27,479 INFO L140 encePairwiseOnDemand]: 299/309 looper letters, 1910 selfloop transitions, 413 changer transitions 2/2336 dead transitions. [2023-08-25 20:09:27,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 889 places, 2336 transitions, 111276 flow [2023-08-25 20:09:27,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-25 20:09:27,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-25 20:09:27,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 4463 transitions. [2023-08-25 20:09:27,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32825831126802 [2023-08-25 20:09:27,482 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 4463 transitions. [2023-08-25 20:09:27,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 4463 transitions. [2023-08-25 20:09:27,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 20:09:27,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 4463 transitions. [2023-08-25 20:09:27,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 101.43181818181819) internal successors, (4463), 44 states have internal predecessors, (4463), 0 states have call successors, (0), 0 states 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 20:09:27,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 309.0) internal successors, (13905), 45 states have internal predecessors, (13905), 0 states have call successors, (0), 0 states 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 20:09:27,490 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 309.0) internal successors, (13905), 45 states have internal predecessors, (13905), 0 states have call successors, (0), 0 states 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 20:09:27,490 INFO L175 Difference]: Start difference. First operand has 847 places, 2173 transitions, 100155 flow. Second operand 44 states and 4463 transitions. [2023-08-25 20:09:27,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 889 places, 2336 transitions, 111276 flow Received shutdown request... [2023-08-25 20:09:31,197 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONASSERT (29 of 30 remaining) [2023-08-25 20:09:31,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-08-25 20:09:31,209 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 20:09:31,210 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 20:09:31,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 20:09:31,403 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-25 20:09:31,404 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (28 of 30 remaining) [2023-08-25 20:09:31,404 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (27 of 30 remaining) [2023-08-25 20:09:31,404 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (26 of 30 remaining) [2023-08-25 20:09:31,404 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (25 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (24 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (23 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (22 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (21 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (20 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (19 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (13 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (12 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (9 of 30 remaining) [2023-08-25 20:09:31,405 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (8 of 30 remaining) [2023-08-25 20:09:31,406 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (7 of 30 remaining) [2023-08-25 20:09:31,406 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (6 of 30 remaining) [2023-08-25 20:09:31,406 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (5 of 30 remaining) [2023-08-25 20:09:31,406 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (4 of 30 remaining) [2023-08-25 20:09:31,406 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (3 of 30 remaining) [2023-08-25 20:09:31,406 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (2 of 30 remaining) [2023-08-25 20:09:31,406 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (1 of 30 remaining) [2023-08-25 20:09:31,406 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (0 of 30 remaining) [2023-08-25 20:09:31,406 INFO L445 BasicCegarLoop]: Path program histogram: [55, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 20:09:31,409 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 20:09:31,409 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 20:09:31,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 08:09:31 BasicIcfg [2023-08-25 20:09:31,411 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 20:09:31,412 INFO L158 Benchmark]: Toolchain (without parser) took 811034.74ms. Allocated memory was 385.9MB in the beginning and 13.2GB in the end (delta: 12.8GB). Free memory was 361.7MB in the beginning and 8.6GB in the end (delta: -8.2GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. [2023-08-25 20:09:31,412 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 385.9MB. Free memory was 362.1MB in the beginning and 361.9MB in the end (delta: 187.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 20:09:31,412 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.25ms. Allocated memory is still 385.9MB. Free memory was 361.7MB in the beginning and 349.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-25 20:09:31,412 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.40ms. Allocated memory is still 385.9MB. Free memory was 349.7MB in the beginning and 347.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 20:09:31,412 INFO L158 Benchmark]: Boogie Preprocessor took 27.46ms. Allocated memory is still 385.9MB. Free memory was 347.0MB in the beginning and 344.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 20:09:31,412 INFO L158 Benchmark]: RCFGBuilder took 548.76ms. Allocated memory is still 385.9MB. Free memory was 344.9MB in the beginning and 303.5MB in the end (delta: 41.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.0GB. [2023-08-25 20:09:31,412 INFO L158 Benchmark]: TraceAbstraction took 810188.60ms. Allocated memory was 385.9MB in the beginning and 13.2GB in the end (delta: 12.8GB). Free memory was 302.9MB in the beginning and 8.6GB in the end (delta: -8.3GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. [2023-08-25 20:09:31,413 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 385.9MB. Free memory was 362.1MB in the beginning and 361.9MB in the end (delta: 187.7kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 219.25ms. Allocated memory is still 385.9MB. Free memory was 361.7MB in the beginning and 349.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.40ms. Allocated memory is still 385.9MB. Free memory was 349.7MB in the beginning and 347.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.46ms. Allocated memory is still 385.9MB. Free memory was 347.0MB in the beginning and 344.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 548.76ms. Allocated memory is still 385.9MB. Free memory was 344.9MB in the beginning and 303.5MB in the end (delta: 41.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.0GB. * TraceAbstraction took 810188.60ms. Allocated memory was 385.9MB in the beginning and 13.2GB in the end (delta: 12.8GB). Free memory was 302.9MB in the beginning and 8.6GB in the end (delta: -8.3GB). Peak memory consumption was 5.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 150 PlacesBefore, 50 PlacesAfterwards, 152 TransitionsBefore, 48 TransitionsAfterwards, 1836 CoEnabledTransitionPairs, 7 FixpointIterations, 93 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 5 ConcurrentYvCompositions, 4 ChoiceCompositions, 146 TotalNumberOfCompositions, 9589 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4705, independent: 4306, independent conditional: 0, independent unconditional: 4306, dependent: 399, dependent conditional: 0, dependent unconditional: 399, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1007, independent: 942, independent conditional: 0, independent unconditional: 942, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4705, independent: 3364, independent conditional: 0, independent unconditional: 3364, dependent: 334, dependent conditional: 0, dependent unconditional: 334, unknown: 1007, unknown conditional: 0, unknown unconditional: 1007] , Statistics on independence cache: Total cache size (in pairs): 253, Positive cache size: 218, Positive conditional cache size: 0, Positive unconditional cache size: 218, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, 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 RemoveRedundantFlow. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 191 locations, 30 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: 810.1s, OverallIterations: 64, TraceHistogramMax: 4, PathProgramHistogramMax: 55, EmptinessCheckTime: 0.0s, AutomataDifference: 688.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10305 SdHoareTripleChecker+Valid, 44.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10305 mSDsluCounter, 16426 SdHoareTripleChecker+Invalid, 39.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1607 IncrementalHoareTripleChecker+Unchecked, 15342 mSDsCounter, 1131 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54178 IncrementalHoareTripleChecker+Invalid, 56916 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1131 mSolverCounterUnsat, 1084 mSDtfsCounter, 54178 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5806 GetRequests, 3395 SyntacticMatches, 113 SemanticMatches, 2298 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 32286 ImplicationChecksByTransitivity, 73.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100155occurred in iteration=63, InterpolantAutomatonStates: 1398, 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: 1.0s SsaConstructionTime, 15.8s SatisfiabilityAnalysisTime, 76.8s InterpolantComputationTime, 4498 NumberOfCodeBlocks, 4498 NumberOfCodeBlocksAsserted, 208 NumberOfCheckSat, 6512 ConstructedInterpolants, 278 QuantifiedInterpolants, 99272 SizeOfPredicates, 1483 NumberOfNonLiveVariables, 22584 ConjunctsInSsa, 3835 ConjunctsInUnsatCore, 178 InterpolantComputations, 9 PerfectInterpolantSequences, 516/3391 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