/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-simple-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 21:17:31,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 21:17:31,979 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 21:17:31,986 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 21:17:31,986 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 21:17:32,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 21:17:32,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 21:17:32,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 21:17:32,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 21:17:32,022 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 21:17:32,022 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 21:17:32,022 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 21:17:32,022 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 21:17:32,023 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 21:17:32,023 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 21:17:32,024 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 21:17:32,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 21:17:32,024 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 21:17:32,024 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 21:17:32,025 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 21:17:32,025 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 21:17:32,025 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 21:17:32,026 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 21:17:32,026 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 21:17:32,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 21:17:32,026 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 21:17:32,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 21:17:32,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:17:32,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 21:17:32,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 21:17:32,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 21:17:32,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 21:17:32,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 21:17:32,028 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 21:17:32,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 21:17:32,029 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 21:17:32,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 21:17:32,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 21:17:32,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 21:17:32,344 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 21:17:32,345 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 21:17:32,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2023-08-25 21:17:33,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 21:17:33,640 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 21:17:33,641 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2023-08-25 21:17:33,650 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b179396/c408e4912b51443c950c6360ea741ef2/FLAGb1010aca0 [2023-08-25 21:17:33,669 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b179396/c408e4912b51443c950c6360ea741ef2 [2023-08-25 21:17:33,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 21:17:33,675 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 21:17:33,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 21:17:33,678 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 21:17:33,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 21:17:33,682 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:17:33" (1/1) ... [2023-08-25 21:17:33,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e383cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:33, skipping insertion in model container [2023-08-25 21:17:33,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:17:33" (1/1) ... [2023-08-25 21:17:33,708 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 21:17:33,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:17:33,906 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 21:17:33,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:17:33,950 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 21:17:33,950 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 21:17:33,956 INFO L206 MainTranslator]: Completed translation [2023-08-25 21:17:33,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:33 WrapperNode [2023-08-25 21:17:33,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 21:17:33,958 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 21:17:33,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 21:17:33,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 21:17:33,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:33" (1/1) ... [2023-08-25 21:17:33,981 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:33" (1/1) ... [2023-08-25 21:17:34,015 INFO L138 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 241 [2023-08-25 21:17:34,015 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 21:17:34,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 21:17:34,017 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 21:17:34,017 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 21:17:34,024 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:33" (1/1) ... [2023-08-25 21:17:34,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:33" (1/1) ... [2023-08-25 21:17:34,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:33" (1/1) ... [2023-08-25 21:17:34,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:33" (1/1) ... [2023-08-25 21:17:34,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:33" (1/1) ... [2023-08-25 21:17:34,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:33" (1/1) ... [2023-08-25 21:17:34,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:33" (1/1) ... [2023-08-25 21:17:34,066 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:33" (1/1) ... [2023-08-25 21:17:34,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 21:17:34,069 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 21:17:34,069 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 21:17:34,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 21:17:34,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:33" (1/1) ... [2023-08-25 21:17:34,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:17:34,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:17:34,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 21:17:34,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 21:17:34,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 21:17:34,143 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 21:17:34,143 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 21:17:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 21:17:34,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 21:17:34,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 21:17:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 21:17:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 21:17:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 21:17:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 21:17:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 21:17:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 21:17:34,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 21:17:34,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 21:17:34,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 21:17:34,147 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 21:17:34,230 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 21:17:34,232 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 21:17:34,592 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 21:17:34,852 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 21:17:34,852 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-25 21:17:34,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:17:34 BoogieIcfgContainer [2023-08-25 21:17:34,855 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 21:17:34,857 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 21:17:34,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 21:17:34,860 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 21:17:34,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 09:17:33" (1/3) ... [2023-08-25 21:17:34,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118b61f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:17:34, skipping insertion in model container [2023-08-25 21:17:34,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:17:33" (2/3) ... [2023-08-25 21:17:34,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118b61f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:17:34, skipping insertion in model container [2023-08-25 21:17:34,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:17:34" (3/3) ... [2023-08-25 21:17:34,862 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2023-08-25 21:17:34,877 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 21:17:34,877 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2023-08-25 21:17:34,877 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 21:17:34,960 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 21:17:34,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 190 transitions, 396 flow [2023-08-25 21:17:35,067 INFO L124 PetriNetUnfolderBase]: 9/188 cut-off events. [2023-08-25 21:17:35,068 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:17:35,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 188 events. 9/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 200 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-08-25 21:17:35,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 190 transitions, 396 flow [2023-08-25 21:17:35,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 179 transitions, 370 flow [2023-08-25 21:17:35,084 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 21:17:35,092 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 179 transitions, 370 flow [2023-08-25 21:17:35,093 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 179 transitions, 370 flow [2023-08-25 21:17:35,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 179 transitions, 370 flow [2023-08-25 21:17:35,139 INFO L124 PetriNetUnfolderBase]: 9/179 cut-off events. [2023-08-25 21:17:35,139 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:17:35,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 179 events. 9/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 198 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-08-25 21:17:35,144 INFO L119 LiptonReduction]: Number of co-enabled transitions 1910 [2023-08-25 21:17:40,876 INFO L134 LiptonReduction]: Checked pairs total: 5643 [2023-08-25 21:17:40,877 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-08-25 21:17:40,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 21:17:40,892 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;@5f18d5d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 21:17:40,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2023-08-25 21:17:40,893 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 21:17:40,893 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 21:17:40,893 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 21:17:40,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:40,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 21:17:40,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:17:40,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:40,898 INFO L85 PathProgramCache]: Analyzing trace with hash 936, now seen corresponding path program 1 times [2023-08-25 21:17:40,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:40,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860424342] [2023-08-25 21:17:40,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:40,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:40,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:40,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860424342] [2023-08-25 21:17:40,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860424342] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:17:40,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:17:40,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 21:17:40,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377907801] [2023-08-25 21:17:40,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:17:40,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 21:17:40,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:41,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 21:17:41,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 21:17:41,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 385 [2023-08-25 21:17:41,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 118 flow. Second operand has 2 states, 2 states have (on average 158.5) internal successors, (317), 2 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:41,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:41,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 385 [2023-08-25 21:17:41,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:41,082 INFO L124 PetriNetUnfolderBase]: 22/62 cut-off events. [2023-08-25 21:17:41,083 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-25 21:17:41,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 62 events. 22/62 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 9 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 70. Up to 43 conditions per place. [2023-08-25 21:17:41,084 INFO L140 encePairwiseOnDemand]: 357/385 looper letters, 15 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-08-25 21:17:41,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 92 flow [2023-08-25 21:17:41,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 21:17:41,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 21:17:41,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 359 transitions. [2023-08-25 21:17:41,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662337662337662 [2023-08-25 21:17:41,104 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 359 transitions. [2023-08-25 21:17:41,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 359 transitions. [2023-08-25 21:17:41,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:41,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 359 transitions. [2023-08-25 21:17:41,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 179.5) internal successors, (359), 2 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:41,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 385.0) internal successors, (1155), 3 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:41,118 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 385.0) internal successors, (1155), 3 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:41,120 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 118 flow. Second operand 2 states and 359 transitions. [2023-08-25 21:17:41,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 92 flow [2023-08-25 21:17:41,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 84 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 21:17:41,124 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 54 flow [2023-08-25 21:17:41,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2023-08-25 21:17:41,128 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -31 predicate places. [2023-08-25 21:17:41,128 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 54 flow [2023-08-25 21:17:41,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 158.5) internal successors, (317), 2 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:41,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:41,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:17:41,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 21:17:41,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:17:41,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:41,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1194105720, now seen corresponding path program 1 times [2023-08-25 21:17:41,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:41,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416729964] [2023-08-25 21:17:41,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:41,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:41,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:41,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416729964] [2023-08-25 21:17:41,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416729964] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:17:41,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:17:41,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 21:17:41,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601167616] [2023-08-25 21:17:41,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:17:41,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:17:41,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:41,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:17:41,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:17:41,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 385 [2023-08-25 21:17:41,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 54 flow. Second operand has 6 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:41,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:41,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 385 [2023-08-25 21:17:41,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:41,820 INFO L124 PetriNetUnfolderBase]: 64/110 cut-off events. [2023-08-25 21:17:41,820 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 21:17:41,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 110 events. 64/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 154 event pairs, 3 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 223. Up to 54 conditions per place. [2023-08-25 21:17:41,821 INFO L140 encePairwiseOnDemand]: 380/385 looper letters, 36 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-25 21:17:41,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 40 transitions, 164 flow [2023-08-25 21:17:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:17:41,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:17:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 845 transitions. [2023-08-25 21:17:41,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3658008658008658 [2023-08-25 21:17:41,825 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 845 transitions. [2023-08-25 21:17:41,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 845 transitions. [2023-08-25 21:17:41,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:41,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 845 transitions. [2023-08-25 21:17:41,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.83333333333334) internal successors, (845), 6 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:41,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 385.0) internal successors, (2695), 7 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:41,833 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 385.0) internal successors, (2695), 7 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:41,833 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 54 flow. Second operand 6 states and 845 transitions. [2023-08-25 21:17:41,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 40 transitions, 164 flow [2023-08-25 21:17:41,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:17:41,834 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 60 flow [2023-08-25 21:17:41,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-25 21:17:41,835 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -27 predicate places. [2023-08-25 21:17:41,835 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 60 flow [2023-08-25 21:17:41,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:41,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:41,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:17:41,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 21:17:41,836 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:17:41,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:41,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1215939157, now seen corresponding path program 1 times [2023-08-25 21:17:41,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:41,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245210765] [2023-08-25 21:17:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:41,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:42,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:42,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:42,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245210765] [2023-08-25 21:17:42,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245210765] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:17:42,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:17:42,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 21:17:42,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992791475] [2023-08-25 21:17:42,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:17:42,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:17:42,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:42,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:17:42,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:17:42,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 385 [2023-08-25 21:17:42,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 60 flow. Second operand has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:42,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 385 [2023-08-25 21:17:42,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:42,170 INFO L124 PetriNetUnfolderBase]: 62/106 cut-off events. [2023-08-25 21:17:42,170 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-25 21:17:42,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 106 events. 62/106 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 141 event pairs, 24 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 231. Up to 85 conditions per place. [2023-08-25 21:17:42,171 INFO L140 encePairwiseOnDemand]: 380/385 looper letters, 27 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2023-08-25 21:17:42,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 136 flow [2023-08-25 21:17:42,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:17:42,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:17:42,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 836 transitions. [2023-08-25 21:17:42,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619047619047619 [2023-08-25 21:17:42,174 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 836 transitions. [2023-08-25 21:17:42,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 836 transitions. [2023-08-25 21:17:42,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:42,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 836 transitions. [2023-08-25 21:17:42,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.33333333333334) internal successors, (836), 6 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 385.0) internal successors, (2695), 7 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,181 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 385.0) internal successors, (2695), 7 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,182 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 60 flow. Second operand 6 states and 836 transitions. [2023-08-25 21:17:42,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 136 flow [2023-08-25 21:17:42,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 129 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 21:17:42,183 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 59 flow [2023-08-25 21:17:42,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=59, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-25 21:17:42,184 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -27 predicate places. [2023-08-25 21:17:42,184 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 59 flow [2023-08-25 21:17:42,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:42,185 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] [2023-08-25 21:17:42,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 21:17:42,185 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:17:42,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:42,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1736851466, now seen corresponding path program 1 times [2023-08-25 21:17:42,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:42,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356939918] [2023-08-25 21:17:42,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:42,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:42,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:42,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:42,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356939918] [2023-08-25 21:17:42,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356939918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:17:42,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:17:42,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 21:17:42,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094809802] [2023-08-25 21:17:42,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:17:42,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:17:42,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:42,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:17:42,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:17:42,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 385 [2023-08-25 21:17:42,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:42,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 385 [2023-08-25 21:17:42,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:42,299 INFO L124 PetriNetUnfolderBase]: 38/95 cut-off events. [2023-08-25 21:17:42,299 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-25 21:17:42,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 95 events. 38/95 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 191 event pairs, 11 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 187. Up to 37 conditions per place. [2023-08-25 21:17:42,300 INFO L140 encePairwiseOnDemand]: 382/385 looper letters, 19 selfloop transitions, 2 changer transitions 2/31 dead transitions. [2023-08-25 21:17:42,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 125 flow [2023-08-25 21:17:42,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:17:42,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:17:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-08-25 21:17:42,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42337662337662335 [2023-08-25 21:17:42,302 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-08-25 21:17:42,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-08-25 21:17:42,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:42,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-08-25 21:17:42,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 385.0) internal successors, (1540), 4 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 385.0) internal successors, (1540), 4 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,307 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 59 flow. Second operand 3 states and 489 transitions. [2023-08-25 21:17:42,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 125 flow [2023-08-25 21:17:42,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 116 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 21:17:42,308 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 64 flow [2023-08-25 21:17:42,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-08-25 21:17:42,309 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -28 predicate places. [2023-08-25 21:17:42,309 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 64 flow [2023-08-25 21:17:42,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:42,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:17:42,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 21:17:42,310 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:17:42,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:42,310 INFO L85 PathProgramCache]: Analyzing trace with hash -944844519, now seen corresponding path program 1 times [2023-08-25 21:17:42,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:42,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336589422] [2023-08-25 21:17:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:42,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:42,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:42,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336589422] [2023-08-25 21:17:42,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336589422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:17:42,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:17:42,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:17:42,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604937151] [2023-08-25 21:17:42,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:17:42,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:17:42,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:42,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:17:42,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:17:42,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 385 [2023-08-25 21:17:42,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:42,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 385 [2023-08-25 21:17:42,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:42,418 INFO L124 PetriNetUnfolderBase]: 52/134 cut-off events. [2023-08-25 21:17:42,419 INFO L125 PetriNetUnfolderBase]: For 20/36 co-relation queries the response was YES. [2023-08-25 21:17:42,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 134 events. 52/134 cut-off events. For 20/36 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 396 event pairs, 17 based on Foata normal form. 7/120 useless extension candidates. Maximal degree in co-relation 269. Up to 74 conditions per place. [2023-08-25 21:17:42,420 INFO L140 encePairwiseOnDemand]: 382/385 looper letters, 18 selfloop transitions, 2 changer transitions 5/33 dead transitions. [2023-08-25 21:17:42,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 33 transitions, 135 flow [2023-08-25 21:17:42,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:17:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:17:42,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-25 21:17:42,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42164502164502166 [2023-08-25 21:17:42,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-25 21:17:42,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-25 21:17:42,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:42,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-25 21:17:42,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 385.0) internal successors, (1540), 4 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,427 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 385.0) internal successors, (1540), 4 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,427 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 64 flow. Second operand 3 states and 487 transitions. [2023-08-25 21:17:42,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 33 transitions, 135 flow [2023-08-25 21:17:42,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 133 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:17:42,428 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 74 flow [2023-08-25 21:17:42,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-25 21:17:42,429 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -26 predicate places. [2023-08-25 21:17:42,429 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 74 flow [2023-08-25 21:17:42,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:42,429 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] [2023-08-25 21:17:42,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 21:17:42,430 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:17:42,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:42,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1478457817, now seen corresponding path program 1 times [2023-08-25 21:17:42,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:42,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637148266] [2023-08-25 21:17:42,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:42,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:42,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:17:42,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:42,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637148266] [2023-08-25 21:17:42,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637148266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:17:42,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:17:42,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 21:17:42,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130230829] [2023-08-25 21:17:42,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:17:42,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 21:17:42,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:42,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 21:17:42,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 21:17:42,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 385 [2023-08-25 21:17:42,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:42,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 385 [2023-08-25 21:17:42,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:42,577 INFO L124 PetriNetUnfolderBase]: 61/186 cut-off events. [2023-08-25 21:17:42,578 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-08-25 21:17:42,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 186 events. 61/186 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 644 event pairs, 44 based on Foata normal form. 6/185 useless extension candidates. Maximal degree in co-relation 381. Up to 103 conditions per place. [2023-08-25 21:17:42,579 INFO L140 encePairwiseOnDemand]: 381/385 looper letters, 16 selfloop transitions, 2 changer transitions 10/36 dead transitions. [2023-08-25 21:17:42,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 156 flow [2023-08-25 21:17:42,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 21:17:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 21:17:42,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 575 transitions. [2023-08-25 21:17:42,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37337662337662336 [2023-08-25 21:17:42,582 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 575 transitions. [2023-08-25 21:17:42,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 575 transitions. [2023-08-25 21:17:42,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:42,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 575 transitions. [2023-08-25 21:17:42,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 143.75) internal successors, (575), 4 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 385.0) internal successors, (1925), 5 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,586 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 385.0) internal successors, (1925), 5 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,586 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 74 flow. Second operand 4 states and 575 transitions. [2023-08-25 21:17:42,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 156 flow [2023-08-25 21:17:42,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:17:42,588 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 86 flow [2023-08-25 21:17:42,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-08-25 21:17:42,588 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -22 predicate places. [2023-08-25 21:17:42,589 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 86 flow [2023-08-25 21:17:42,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:42,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:42,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:17:42,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 21:17:42,590 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:17:42,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:42,590 INFO L85 PathProgramCache]: Analyzing trace with hash -19292137, now seen corresponding path program 1 times [2023-08-25 21:17:42,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:42,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416183798] [2023-08-25 21:17:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:42,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:43,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:43,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416183798] [2023-08-25 21:17:43,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416183798] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:17:43,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880913827] [2023-08-25 21:17:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:43,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:17:43,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:17:43,013 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 21:17:43,039 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 21:17:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:43,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-25 21:17:43,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:17:43,274 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-25 21:17:43,309 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 21:17:43,338 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 21:17:43,529 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 21:17:43,529 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-08-25 21:17:43,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:43,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:17:43,808 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:17:43,809 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 60 treesize of output 48 [2023-08-25 21:17:43,821 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 21:17:43,822 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 300 treesize of output 271 [2023-08-25 21:17:43,842 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 21:17:43,843 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 92 treesize of output 80 [2023-08-25 21:17:43,860 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-25 21:17:43,860 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 91 treesize of output 67 [2023-08-25 21:17:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:43,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880913827] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:17:43,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:17:43,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2023-08-25 21:17:43,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475106506] [2023-08-25 21:17:43,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:17:43,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 21:17:43,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:43,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 21:17:43,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=212, Unknown=2, NotChecked=0, Total=272 [2023-08-25 21:17:43,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 385 [2023-08-25 21:17:43,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 86 flow. Second operand has 17 states, 17 states have (on average 104.11764705882354) internal successors, (1770), 17 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:43,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:43,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 385 [2023-08-25 21:17:43,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:44,600 INFO L124 PetriNetUnfolderBase]: 487/844 cut-off events. [2023-08-25 21:17:44,601 INFO L125 PetriNetUnfolderBase]: For 270/270 co-relation queries the response was YES. [2023-08-25 21:17:44,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 844 events. 487/844 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3462 event pairs, 132 based on Foata normal form. 2/844 useless extension candidates. Maximal degree in co-relation 2070. Up to 188 conditions per place. [2023-08-25 21:17:44,605 INFO L140 encePairwiseOnDemand]: 379/385 looper letters, 98 selfloop transitions, 12 changer transitions 6/116 dead transitions. [2023-08-25 21:17:44,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 116 transitions, 555 flow [2023-08-25 21:17:44,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 21:17:44,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 21:17:44,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1024 transitions. [2023-08-25 21:17:44,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2955266955266955 [2023-08-25 21:17:44,608 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1024 transitions. [2023-08-25 21:17:44,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1024 transitions. [2023-08-25 21:17:44,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:44,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1024 transitions. [2023-08-25 21:17:44,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 113.77777777777777) internal successors, (1024), 9 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:44,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 385.0) internal successors, (3850), 10 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 21:17:44,616 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 385.0) internal successors, (3850), 10 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 21:17:44,616 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 86 flow. Second operand 9 states and 1024 transitions. [2023-08-25 21:17:44,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 116 transitions, 555 flow [2023-08-25 21:17:44,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 116 transitions, 547 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-25 21:17:44,619 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 180 flow [2023-08-25 21:17:44,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=180, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-08-25 21:17:44,620 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -13 predicate places. [2023-08-25 21:17:44,620 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 180 flow [2023-08-25 21:17:44,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.11764705882354) internal successors, (1770), 17 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:44,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:44,621 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] [2023-08-25 21:17:44,629 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 21:17:44,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:17:44,827 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:17:44,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:44,828 INFO L85 PathProgramCache]: Analyzing trace with hash -675390956, now seen corresponding path program 2 times [2023-08-25 21:17:44,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:44,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170058674] [2023-08-25 21:17:44,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:44,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 21:17:44,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:44,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170058674] [2023-08-25 21:17:44,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170058674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:17:44,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:17:44,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 21:17:44,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831036683] [2023-08-25 21:17:44,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:17:44,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 21:17:44,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:44,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 21:17:44,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 21:17:44,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 385 [2023-08-25 21:17:44,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:44,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:44,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 385 [2023-08-25 21:17:44,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:45,050 INFO L124 PetriNetUnfolderBase]: 243/624 cut-off events. [2023-08-25 21:17:45,050 INFO L125 PetriNetUnfolderBase]: For 494/638 co-relation queries the response was YES. [2023-08-25 21:17:45,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1585 conditions, 624 events. 243/624 cut-off events. For 494/638 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3411 event pairs, 64 based on Foata normal form. 16/626 useless extension candidates. Maximal degree in co-relation 1574. Up to 243 conditions per place. [2023-08-25 21:17:45,054 INFO L140 encePairwiseOnDemand]: 382/385 looper letters, 43 selfloop transitions, 10 changer transitions 0/61 dead transitions. [2023-08-25 21:17:45,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 396 flow [2023-08-25 21:17:45,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 21:17:45,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 21:17:45,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 653 transitions. [2023-08-25 21:17:45,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42402597402597403 [2023-08-25 21:17:45,056 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 653 transitions. [2023-08-25 21:17:45,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 653 transitions. [2023-08-25 21:17:45,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:45,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 653 transitions. [2023-08-25 21:17:45,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:45,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 385.0) internal successors, (1925), 5 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:45,060 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 385.0) internal successors, (1925), 5 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:45,060 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 180 flow. Second operand 4 states and 653 transitions. [2023-08-25 21:17:45,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 396 flow [2023-08-25 21:17:45,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 386 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-25 21:17:45,066 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 280 flow [2023-08-25 21:17:45,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-08-25 21:17:45,068 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2023-08-25 21:17:45,068 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 280 flow [2023-08-25 21:17:45,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:45,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:45,069 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] [2023-08-25 21:17:45,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 21:17:45,070 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:17:45,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:45,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1593827269, now seen corresponding path program 3 times [2023-08-25 21:17:45,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:45,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349443448] [2023-08-25 21:17:45,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:45,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:45,677 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 21:17:45,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:45,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349443448] [2023-08-25 21:17:45,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349443448] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:17:45,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646950898] [2023-08-25 21:17:45,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:17:45,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:17:45,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:17:45,681 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 21:17:45,684 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 21:17:45,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 21:17:45,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:17:45,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-25 21:17:45,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:17:45,916 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 21:17:45,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:17:45,950 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 21:17:45,950 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2023-08-25 21:17:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:17:45,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646950898] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:17:45,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:17:45,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 3] total 9 [2023-08-25 21:17:45,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098678700] [2023-08-25 21:17:45,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:17:45,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 21:17:45,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:45,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 21:17:45,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-08-25 21:17:45,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 385 [2023-08-25 21:17:45,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 280 flow. Second operand has 11 states, 11 states have (on average 122.36363636363636) internal successors, (1346), 11 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:45,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:45,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 385 [2023-08-25 21:17:45,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:46,397 INFO L124 PetriNetUnfolderBase]: 470/1119 cut-off events. [2023-08-25 21:17:46,397 INFO L125 PetriNetUnfolderBase]: For 1836/2106 co-relation queries the response was YES. [2023-08-25 21:17:46,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3330 conditions, 1119 events. 470/1119 cut-off events. For 1836/2106 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7137 event pairs, 85 based on Foata normal form. 18/1109 useless extension candidates. Maximal degree in co-relation 3316. Up to 317 conditions per place. [2023-08-25 21:17:46,402 INFO L140 encePairwiseOnDemand]: 378/385 looper letters, 54 selfloop transitions, 26 changer transitions 16/104 dead transitions. [2023-08-25 21:17:46,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 104 transitions, 804 flow [2023-08-25 21:17:46,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 21:17:46,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 21:17:46,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1267 transitions. [2023-08-25 21:17:46,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3290909090909091 [2023-08-25 21:17:46,408 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1267 transitions. [2023-08-25 21:17:46,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1267 transitions. [2023-08-25 21:17:46,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:46,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1267 transitions. [2023-08-25 21:17:46,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 126.7) internal successors, (1267), 10 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:46,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 385.0) internal successors, (4235), 11 states have internal predecessors, (4235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:46,417 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 385.0) internal successors, (4235), 11 states have internal predecessors, (4235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:46,417 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 280 flow. Second operand 10 states and 1267 transitions. [2023-08-25 21:17:46,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 104 transitions, 804 flow [2023-08-25 21:17:46,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 104 transitions, 774 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-08-25 21:17:46,423 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 515 flow [2023-08-25 21:17:46,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=515, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-08-25 21:17:46,425 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2023-08-25 21:17:46,425 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 515 flow [2023-08-25 21:17:46,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 122.36363636363636) internal successors, (1346), 11 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:46,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:46,426 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] [2023-08-25 21:17:46,434 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 21:17:46,631 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 21:17:46,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:17:46,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:46,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1207365805, now seen corresponding path program 4 times [2023-08-25 21:17:46,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:46,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749198956] [2023-08-25 21:17:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:46,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:47,263 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 21:17:47,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:47,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749198956] [2023-08-25 21:17:47,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749198956] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:17:47,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842236573] [2023-08-25 21:17:47,264 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:17:47,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:17:47,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:17:47,266 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 21:17:47,267 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 21:17:47,460 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:17:47,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:17:47,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 21:17:47,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:17:47,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 21:17:47,561 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 21:17:47,602 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 21:17:47,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:17:47,633 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_512 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_512) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))))) is different from false [2023-08-25 21:17:47,644 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:17:47,645 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 34 [2023-08-25 21:17:47,648 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 9 treesize of output 3 [2023-08-25 21:17:47,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-08-25 21:17:47,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842236573] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:17:47,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:17:47,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 15 [2023-08-25 21:17:47,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877160825] [2023-08-25 21:17:47,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:17:47,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 21:17:47,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:47,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 21:17:47,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=203, Unknown=1, NotChecked=28, Total=272 [2023-08-25 21:17:47,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 385 [2023-08-25 21:17:47,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 515 flow. Second operand has 17 states, 17 states have (on average 112.3529411764706) internal successors, (1910), 17 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:47,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:47,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 385 [2023-08-25 21:17:47,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:48,478 INFO L124 PetriNetUnfolderBase]: 916/1894 cut-off events. [2023-08-25 21:17:48,478 INFO L125 PetriNetUnfolderBase]: For 5002/5290 co-relation queries the response was YES. [2023-08-25 21:17:48,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6343 conditions, 1894 events. 916/1894 cut-off events. For 5002/5290 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11983 event pairs, 223 based on Foata normal form. 11/1874 useless extension candidates. Maximal degree in co-relation 6324. Up to 622 conditions per place. [2023-08-25 21:17:48,489 INFO L140 encePairwiseOnDemand]: 374/385 looper letters, 71 selfloop transitions, 42 changer transitions 30/147 dead transitions. [2023-08-25 21:17:48,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 147 transitions, 1199 flow [2023-08-25 21:17:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 21:17:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 21:17:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1426 transitions. [2023-08-25 21:17:48,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30865800865800863 [2023-08-25 21:17:48,493 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1426 transitions. [2023-08-25 21:17:48,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1426 transitions. [2023-08-25 21:17:48,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:48,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1426 transitions. [2023-08-25 21:17:48,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 118.83333333333333) internal successors, (1426), 12 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:48,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 385.0) internal successors, (5005), 13 states have internal predecessors, (5005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:48,503 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 385.0) internal successors, (5005), 13 states have internal predecessors, (5005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:48,503 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 515 flow. Second operand 12 states and 1426 transitions. [2023-08-25 21:17:48,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 147 transitions, 1199 flow [2023-08-25 21:17:48,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 147 transitions, 1166 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-25 21:17:48,513 INFO L231 Difference]: Finished difference. Result has 71 places, 77 transitions, 809 flow [2023-08-25 21:17:48,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=809, PETRI_PLACES=71, PETRI_TRANSITIONS=77} [2023-08-25 21:17:48,514 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2023-08-25 21:17:48,514 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 77 transitions, 809 flow [2023-08-25 21:17:48,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 112.3529411764706) internal successors, (1910), 17 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:48,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:48,515 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] [2023-08-25 21:17:48,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 21:17:48,723 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 21:17:48,724 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:17:48,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:48,724 INFO L85 PathProgramCache]: Analyzing trace with hash -151557902, now seen corresponding path program 5 times [2023-08-25 21:17:48,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:48,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237013538] [2023-08-25 21:17:48,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:48,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:17:48,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:48,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237013538] [2023-08-25 21:17:48,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237013538] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:17:48,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884399702] [2023-08-25 21:17:48,851 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:17:48,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:17:48,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:17:48,852 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 21:17:48,854 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 21:17:49,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:17:49,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:17:49,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 21:17:49,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:17:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:17:49,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:17:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:17:49,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884399702] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:17:49,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:17:49,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-25 21:17:49,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958687701] [2023-08-25 21:17:49,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:17:49,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 21:17:49,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 21:17:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-08-25 21:17:49,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 385 [2023-08-25 21:17:49,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 77 transitions, 809 flow. Second operand has 12 states, 12 states have (on average 135.5) internal successors, (1626), 12 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:49,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:49,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 385 [2023-08-25 21:17:49,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:49,514 INFO L124 PetriNetUnfolderBase]: 383/1075 cut-off events. [2023-08-25 21:17:49,514 INFO L125 PetriNetUnfolderBase]: For 4081/4525 co-relation queries the response was YES. [2023-08-25 21:17:49,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3956 conditions, 1075 events. 383/1075 cut-off events. For 4081/4525 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7244 event pairs, 220 based on Foata normal form. 27/1073 useless extension candidates. Maximal degree in co-relation 3934. Up to 628 conditions per place. [2023-08-25 21:17:49,520 INFO L140 encePairwiseOnDemand]: 380/385 looper letters, 45 selfloop transitions, 3 changer transitions 30/86 dead transitions. [2023-08-25 21:17:49,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 872 flow [2023-08-25 21:17:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 21:17:49,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 21:17:49,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 976 transitions. [2023-08-25 21:17:49,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362152133580705 [2023-08-25 21:17:49,524 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 976 transitions. [2023-08-25 21:17:49,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 976 transitions. [2023-08-25 21:17:49,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:49,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 976 transitions. [2023-08-25 21:17:49,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.42857142857142) internal successors, (976), 7 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:49,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 385.0) internal successors, (3080), 8 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 21:17:49,530 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 385.0) internal successors, (3080), 8 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 21:17:49,530 INFO L175 Difference]: Start difference. First operand has 71 places, 77 transitions, 809 flow. Second operand 7 states and 976 transitions. [2023-08-25 21:17:49,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 872 flow [2023-08-25 21:17:49,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 819 flow, removed 8 selfloop flow, removed 9 redundant places. [2023-08-25 21:17:49,540 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 480 flow [2023-08-25 21:17:49,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=480, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-08-25 21:17:49,541 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2023-08-25 21:17:49,541 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 480 flow [2023-08-25 21:17:49,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 135.5) internal successors, (1626), 12 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:49,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:49,542 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:17:49,552 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 21:17:49,751 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 21:17:49,752 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:17:49,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:49,752 INFO L85 PathProgramCache]: Analyzing trace with hash -81792632, now seen corresponding path program 6 times [2023-08-25 21:17:49,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:49,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865514326] [2023-08-25 21:17:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:49,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:50,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:50,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865514326] [2023-08-25 21:17:50,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865514326] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:17:50,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659853084] [2023-08-25 21:17:50,212 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:17:50,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:17:50,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:17:50,213 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 21:17:50,216 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 21:17:50,401 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 21:17:50,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:17:50,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-25 21:17:50,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:17:50,621 INFO L322 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-08-25 21:17:50,623 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2023-08-25 21:17:50,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:50,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:17:50,811 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 21:17:50,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2023-08-25 21:17:51,067 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:51,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659853084] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:17:51,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:17:51,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-25 21:17:51,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433071569] [2023-08-25 21:17:51,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:17:51,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 21:17:51,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:51,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 21:17:51,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2023-08-25 21:17:51,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 385 [2023-08-25 21:17:51,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 480 flow. Second operand has 24 states, 24 states have (on average 121.91666666666667) internal successors, (2926), 24 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:51,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:51,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 385 [2023-08-25 21:17:51,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:53,310 INFO L124 PetriNetUnfolderBase]: 667/1667 cut-off events. [2023-08-25 21:17:53,310 INFO L125 PetriNetUnfolderBase]: For 5366/6473 co-relation queries the response was YES. [2023-08-25 21:17:53,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6218 conditions, 1667 events. 667/1667 cut-off events. For 5366/6473 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11815 event pairs, 124 based on Foata normal form. 55/1698 useless extension candidates. Maximal degree in co-relation 6197. Up to 587 conditions per place. [2023-08-25 21:17:53,319 INFO L140 encePairwiseOnDemand]: 378/385 looper letters, 83 selfloop transitions, 21 changer transitions 162/274 dead transitions. [2023-08-25 21:17:53,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 274 transitions, 2286 flow [2023-08-25 21:17:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-25 21:17:53,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-25 21:17:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4093 transitions. [2023-08-25 21:17:53,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33222402597402595 [2023-08-25 21:17:53,331 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4093 transitions. [2023-08-25 21:17:53,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4093 transitions. [2023-08-25 21:17:53,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:53,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4093 transitions. [2023-08-25 21:17:53,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 127.90625) internal successors, (4093), 32 states have internal predecessors, (4093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:53,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 385.0) internal successors, (12705), 33 states have internal predecessors, (12705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:53,356 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 385.0) internal successors, (12705), 33 states have internal predecessors, (12705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:53,356 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 480 flow. Second operand 32 states and 4093 transitions. [2023-08-25 21:17:53,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 274 transitions, 2286 flow [2023-08-25 21:17:53,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 274 transitions, 2167 flow, removed 50 selfloop flow, removed 6 redundant places. [2023-08-25 21:17:53,365 INFO L231 Difference]: Finished difference. Result has 108 places, 56 transitions, 553 flow [2023-08-25 21:17:53,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=553, PETRI_PLACES=108, PETRI_TRANSITIONS=56} [2023-08-25 21:17:53,365 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 51 predicate places. [2023-08-25 21:17:53,366 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 56 transitions, 553 flow [2023-08-25 21:17:53,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 121.91666666666667) internal successors, (2926), 24 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:53,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:53,367 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:17:53,378 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 21:17:53,578 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 21:17:53,578 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:17:53,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:53,579 INFO L85 PathProgramCache]: Analyzing trace with hash 479932236, now seen corresponding path program 7 times [2023-08-25 21:17:53,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:53,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191613519] [2023-08-25 21:17:53,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:53,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:54,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:54,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191613519] [2023-08-25 21:17:54,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191613519] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:17:54,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842487859] [2023-08-25 21:17:54,216 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:17:54,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:17:54,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:17:54,217 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 21:17:54,219 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 21:17:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:54,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-25 21:17:54,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:17:54,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 21:17:54,547 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 21:17:54,626 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 21:17:54,627 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-08-25 21:17:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:54,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:17:54,751 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:17:54,751 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 37 [2023-08-25 21:17:54,760 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 10 treesize of output 3 [2023-08-25 21:17:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:55,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842487859] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:17:55,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:17:55,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-08-25 21:17:55,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172589211] [2023-08-25 21:17:55,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:17:55,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-25 21:17:55,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:55,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-25 21:17:55,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2023-08-25 21:17:55,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 385 [2023-08-25 21:17:55,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 56 transitions, 553 flow. Second operand has 27 states, 27 states have (on average 111.77777777777777) internal successors, (3018), 27 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:55,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:55,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 385 [2023-08-25 21:17:55,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:56,089 INFO L124 PetriNetUnfolderBase]: 466/1039 cut-off events. [2023-08-25 21:17:56,089 INFO L125 PetriNetUnfolderBase]: For 7773/8197 co-relation queries the response was YES. [2023-08-25 21:17:56,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4782 conditions, 1039 events. 466/1039 cut-off events. For 7773/8197 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5886 event pairs, 187 based on Foata normal form. 15/1036 useless extension candidates. Maximal degree in co-relation 4742. Up to 423 conditions per place. [2023-08-25 21:17:56,097 INFO L140 encePairwiseOnDemand]: 379/385 looper letters, 41 selfloop transitions, 9 changer transitions 78/132 dead transitions. [2023-08-25 21:17:56,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 132 transitions, 1134 flow [2023-08-25 21:17:56,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 21:17:56,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 21:17:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1544 transitions. [2023-08-25 21:17:56,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30849150849150847 [2023-08-25 21:17:56,101 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1544 transitions. [2023-08-25 21:17:56,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1544 transitions. [2023-08-25 21:17:56,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:56,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1544 transitions. [2023-08-25 21:17:56,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.76923076923077) internal successors, (1544), 13 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:56,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 385.0) internal successors, (5390), 14 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:56,112 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 385.0) internal successors, (5390), 14 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:56,112 INFO L175 Difference]: Start difference. First operand has 108 places, 56 transitions, 553 flow. Second operand 13 states and 1544 transitions. [2023-08-25 21:17:56,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 132 transitions, 1134 flow [2023-08-25 21:17:56,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 132 transitions, 994 flow, removed 55 selfloop flow, removed 22 redundant places. [2023-08-25 21:17:56,135 INFO L231 Difference]: Finished difference. Result has 84 places, 44 transitions, 366 flow [2023-08-25 21:17:56,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=366, PETRI_PLACES=84, PETRI_TRANSITIONS=44} [2023-08-25 21:17:56,135 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 27 predicate places. [2023-08-25 21:17:56,135 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 44 transitions, 366 flow [2023-08-25 21:17:56,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 111.77777777777777) internal successors, (3018), 27 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:56,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:56,136 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:17:56,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 21:17:56,342 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 21:17:56,342 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:17:56,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:56,343 INFO L85 PathProgramCache]: Analyzing trace with hash 44413672, now seen corresponding path program 8 times [2023-08-25 21:17:56,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:56,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945985300] [2023-08-25 21:17:56,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:56,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:57,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:57,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945985300] [2023-08-25 21:17:57,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945985300] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:17:57,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172537791] [2023-08-25 21:17:57,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:17:57,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:17:57,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:17:57,084 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 21:17:57,103 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 21:17:57,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:17:57,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:17:57,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-25 21:17:57,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:17:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:17:57,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:17:57,401 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-25 21:17:57,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2023-08-25 21:17:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 21:17:57,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172537791] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:17:57,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:17:57,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 5] total 15 [2023-08-25 21:17:57,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990579125] [2023-08-25 21:17:57,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:17:57,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 21:17:57,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:57,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 21:17:57,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-08-25 21:17:57,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 385 [2023-08-25 21:17:57,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 44 transitions, 366 flow. Second operand has 17 states, 17 states have (on average 122.05882352941177) internal successors, (2075), 17 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:57,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:57,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 385 [2023-08-25 21:17:57,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:17:58,199 INFO L124 PetriNetUnfolderBase]: 471/1149 cut-off events. [2023-08-25 21:17:58,199 INFO L125 PetriNetUnfolderBase]: For 5289/6251 co-relation queries the response was YES. [2023-08-25 21:17:58,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4807 conditions, 1149 events. 471/1149 cut-off events. For 5289/6251 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7314 event pairs, 51 based on Foata normal form. 19/1150 useless extension candidates. Maximal degree in co-relation 4777. Up to 425 conditions per place. [2023-08-25 21:17:58,207 INFO L140 encePairwiseOnDemand]: 378/385 looper letters, 87 selfloop transitions, 44 changer transitions 60/199 dead transitions. [2023-08-25 21:17:58,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 199 transitions, 1794 flow [2023-08-25 21:17:58,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 21:17:58,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 21:17:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3062 transitions. [2023-08-25 21:17:58,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313852813852814 [2023-08-25 21:17:58,212 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3062 transitions. [2023-08-25 21:17:58,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3062 transitions. [2023-08-25 21:17:58,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:17:58,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3062 transitions. [2023-08-25 21:17:58,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 127.58333333333333) internal successors, (3062), 24 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:58,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 385.0) internal successors, (9625), 25 states have internal predecessors, (9625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:58,229 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 385.0) internal successors, (9625), 25 states have internal predecessors, (9625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:58,229 INFO L175 Difference]: Start difference. First operand has 84 places, 44 transitions, 366 flow. Second operand 24 states and 3062 transitions. [2023-08-25 21:17:58,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 199 transitions, 1794 flow [2023-08-25 21:17:58,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 199 transitions, 1444 flow, removed 154 selfloop flow, removed 18 redundant places. [2023-08-25 21:17:58,242 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 713 flow [2023-08-25 21:17:58,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=713, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2023-08-25 21:17:58,243 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 22 predicate places. [2023-08-25 21:17:58,243 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 713 flow [2023-08-25 21:17:58,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 122.05882352941177) internal successors, (2075), 17 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:58,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:17:58,244 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:17:58,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 21:17:58,450 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 21:17:58,450 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:17:58,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:17:58,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1854480804, now seen corresponding path program 9 times [2023-08-25 21:17:58,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:17:58,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677837646] [2023-08-25 21:17:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:17:58,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:17:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:17:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:17:59,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:17:59,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677837646] [2023-08-25 21:17:59,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677837646] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:17:59,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967606289] [2023-08-25 21:17:59,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:17:59,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:17:59,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:17:59,377 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 21:17:59,381 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 21:17:59,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 21:17:59,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:17:59,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 21:17:59,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:17:59,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 21:17:59,711 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-25 21:17:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 21:17:59,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:17:59,847 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:17:59,847 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 37 [2023-08-25 21:17:59,853 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 10 treesize of output 3 [2023-08-25 21:17:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 21:17:59,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967606289] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:17:59,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:17:59,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 20 [2023-08-25 21:17:59,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929532889] [2023-08-25 21:17:59,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:17:59,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 21:17:59,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:17:59,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 21:17:59,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=403, Unknown=4, NotChecked=0, Total=462 [2023-08-25 21:17:59,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 385 [2023-08-25 21:17:59,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 713 flow. Second operand has 22 states, 22 states have (on average 112.04545454545455) internal successors, (2465), 22 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:17:59,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:17:59,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 385 [2023-08-25 21:17:59,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:18:00,765 INFO L124 PetriNetUnfolderBase]: 749/1540 cut-off events. [2023-08-25 21:18:00,765 INFO L125 PetriNetUnfolderBase]: For 5151/5812 co-relation queries the response was YES. [2023-08-25 21:18:00,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6092 conditions, 1540 events. 749/1540 cut-off events. For 5151/5812 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 9261 event pairs, 103 based on Foata normal form. 11/1533 useless extension candidates. Maximal degree in co-relation 6069. Up to 587 conditions per place. [2023-08-25 21:18:00,772 INFO L140 encePairwiseOnDemand]: 379/385 looper letters, 83 selfloop transitions, 44 changer transitions 55/186 dead transitions. [2023-08-25 21:18:00,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 186 transitions, 1493 flow [2023-08-25 21:18:00,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 21:18:00,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 21:18:00,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1913 transitions. [2023-08-25 21:18:00,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3105519480519481 [2023-08-25 21:18:00,776 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1913 transitions. [2023-08-25 21:18:00,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1913 transitions. [2023-08-25 21:18:00,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:18:00,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1913 transitions. [2023-08-25 21:18:00,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 119.5625) internal successors, (1913), 16 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:00,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 385.0) internal successors, (6545), 17 states have internal predecessors, (6545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:00,785 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 385.0) internal successors, (6545), 17 states have internal predecessors, (6545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:00,785 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 713 flow. Second operand 16 states and 1913 transitions. [2023-08-25 21:18:00,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 186 transitions, 1493 flow [2023-08-25 21:18:00,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 186 transitions, 1327 flow, removed 46 selfloop flow, removed 7 redundant places. [2023-08-25 21:18:00,801 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 691 flow [2023-08-25 21:18:00,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=691, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2023-08-25 21:18:00,801 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2023-08-25 21:18:00,802 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 691 flow [2023-08-25 21:18:00,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 112.04545454545455) internal successors, (2465), 22 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:00,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:18:00,802 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:18:00,812 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 21:18:01,008 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 21:18:01,009 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:18:01,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:18:01,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1206654637, now seen corresponding path program 10 times [2023-08-25 21:18:01,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:18:01,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280396271] [2023-08-25 21:18:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:18:01,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:18:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:18:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 21:18:01,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:18:01,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280396271] [2023-08-25 21:18:01,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280396271] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:18:01,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636530295] [2023-08-25 21:18:01,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:18:01,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:18:01,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:18:01,105 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 21:18:01,128 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 21:18:01,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:18:01,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:18:01,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 21:18:01,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:18:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 21:18:01,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:18:01,414 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 21:18:01,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636530295] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:18:01,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:18:01,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-25 21:18:01,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036434965] [2023-08-25 21:18:01,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:18:01,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 21:18:01,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:18:01,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 21:18:01,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-25 21:18:01,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 385 [2023-08-25 21:18:01,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 691 flow. Second operand has 5 states, 5 states have (on average 157.6) internal successors, (788), 5 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:01,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:18:01,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 385 [2023-08-25 21:18:01,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:18:01,710 INFO L124 PetriNetUnfolderBase]: 1031/2577 cut-off events. [2023-08-25 21:18:01,710 INFO L125 PetriNetUnfolderBase]: For 7501/8843 co-relation queries the response was YES. [2023-08-25 21:18:01,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8509 conditions, 2577 events. 1031/2577 cut-off events. For 7501/8843 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20144 event pairs, 230 based on Foata normal form. 30/2563 useless extension candidates. Maximal degree in co-relation 8486. Up to 863 conditions per place. [2023-08-25 21:18:01,725 INFO L140 encePairwiseOnDemand]: 382/385 looper letters, 69 selfloop transitions, 53 changer transitions 0/130 dead transitions. [2023-08-25 21:18:01,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 130 transitions, 1506 flow [2023-08-25 21:18:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 21:18:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 21:18:01,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 818 transitions. [2023-08-25 21:18:01,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42493506493506494 [2023-08-25 21:18:01,727 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 818 transitions. [2023-08-25 21:18:01,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 818 transitions. [2023-08-25 21:18:01,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:18:01,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 818 transitions. [2023-08-25 21:18:01,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.6) internal successors, (818), 5 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 21:18:01,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 385.0) internal successors, (2310), 6 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:01,771 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 385.0) internal successors, (2310), 6 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:01,772 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 691 flow. Second operand 5 states and 818 transitions. [2023-08-25 21:18:01,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 130 transitions, 1506 flow [2023-08-25 21:18:01,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 130 transitions, 1433 flow, removed 16 selfloop flow, removed 9 redundant places. [2023-08-25 21:18:01,787 INFO L231 Difference]: Finished difference. Result has 84 places, 104 transitions, 1205 flow [2023-08-25 21:18:01,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1205, PETRI_PLACES=84, PETRI_TRANSITIONS=104} [2023-08-25 21:18:01,788 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 27 predicate places. [2023-08-25 21:18:01,788 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 104 transitions, 1205 flow [2023-08-25 21:18:01,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 157.6) internal successors, (788), 5 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:01,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:18:01,789 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:18:01,799 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 21:18:01,995 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 21:18:01,995 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:18:01,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:18:01,996 INFO L85 PathProgramCache]: Analyzing trace with hash 649032577, now seen corresponding path program 11 times [2023-08-25 21:18:01,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:18:01,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365741718] [2023-08-25 21:18:01,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:18:01,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:18:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:18:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:02,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:18:02,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365741718] [2023-08-25 21:18:02,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365741718] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:18:02,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442746417] [2023-08-25 21:18:02,549 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:18:02,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:18:02,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:18:02,550 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 21:18:02,572 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 21:18:03,615 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 21:18:03,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:18:03,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-25 21:18:03,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:18:03,728 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 21:18:03,728 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-08-25 21:18:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 21:18:03,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:18:03,814 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-25 21:18:03,815 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2023-08-25 21:18:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 21:18:03,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442746417] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:18:03,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:18:03,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 18 [2023-08-25 21:18:03,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179367117] [2023-08-25 21:18:03,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:18:03,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 21:18:03,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:18:03,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 21:18:03,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-08-25 21:18:03,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 385 [2023-08-25 21:18:03,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 104 transitions, 1205 flow. Second operand has 20 states, 20 states have (on average 121.8) internal successors, (2436), 20 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:03,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:18:03,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 385 [2023-08-25 21:18:03,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:18:06,116 INFO L124 PetriNetUnfolderBase]: 1949/4496 cut-off events. [2023-08-25 21:18:06,116 INFO L125 PetriNetUnfolderBase]: For 14252/16226 co-relation queries the response was YES. [2023-08-25 21:18:06,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16438 conditions, 4496 events. 1949/4496 cut-off events. For 14252/16226 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 37567 event pairs, 144 based on Foata normal form. 70/4537 useless extension candidates. Maximal degree in co-relation 16414. Up to 1595 conditions per place. [2023-08-25 21:18:06,150 INFO L140 encePairwiseOnDemand]: 378/385 looper letters, 140 selfloop transitions, 166 changer transitions 178/492 dead transitions. [2023-08-25 21:18:06,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 492 transitions, 4424 flow [2023-08-25 21:18:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-25 21:18:06,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-25 21:18:06,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 6406 transitions. [2023-08-25 21:18:06,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3327792207792208 [2023-08-25 21:18:06,158 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 6406 transitions. [2023-08-25 21:18:06,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 6406 transitions. [2023-08-25 21:18:06,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:18:06,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 6406 transitions. [2023-08-25 21:18:06,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 128.12) internal successors, (6406), 50 states have internal predecessors, (6406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:06,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 385.0) internal successors, (19635), 51 states have internal predecessors, (19635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:06,184 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 385.0) internal successors, (19635), 51 states have internal predecessors, (19635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:06,184 INFO L175 Difference]: Start difference. First operand has 84 places, 104 transitions, 1205 flow. Second operand 50 states and 6406 transitions. [2023-08-25 21:18:06,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 492 transitions, 4424 flow [2023-08-25 21:18:06,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 492 transitions, 4182 flow, removed 121 selfloop flow, removed 0 redundant places. [2023-08-25 21:18:06,221 INFO L231 Difference]: Finished difference. Result has 151 places, 195 transitions, 2739 flow [2023-08-25 21:18:06,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2739, PETRI_PLACES=151, PETRI_TRANSITIONS=195} [2023-08-25 21:18:06,222 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 94 predicate places. [2023-08-25 21:18:06,222 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 195 transitions, 2739 flow [2023-08-25 21:18:06,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 121.8) internal successors, (2436), 20 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:06,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:18:06,223 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:18:06,236 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 21:18:06,433 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 21:18:06,433 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:18:06,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:18:06,434 INFO L85 PathProgramCache]: Analyzing trace with hash 247562021, now seen corresponding path program 12 times [2023-08-25 21:18:06,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:18:06,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71081424] [2023-08-25 21:18:06,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:18:06,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:18:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:18:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:07,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:18:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71081424] [2023-08-25 21:18:07,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71081424] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:18:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153709590] [2023-08-25 21:18:07,006 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:18:07,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:18:07,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:18:07,009 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 21:18:07,020 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 21:18:07,903 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 21:18:07,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:18:07,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-25 21:18:07,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:18:08,197 INFO L322 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-08-25 21:18:08,197 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2023-08-25 21:18:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:08,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:18:08,372 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 21:18:08,373 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2023-08-25 21:18:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:08,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153709590] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:18:08,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:18:08,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-25 21:18:08,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995733276] [2023-08-25 21:18:08,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:18:08,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-25 21:18:08,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:18:08,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-25 21:18:08,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=913, Unknown=0, NotChecked=0, Total=1056 [2023-08-25 21:18:08,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 385 [2023-08-25 21:18:08,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 195 transitions, 2739 flow. Second operand has 33 states, 33 states have (on average 121.72727272727273) internal successors, (4017), 33 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:08,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:18:08,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 385 [2023-08-25 21:18:08,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:18:14,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 21:18:16,741 INFO L124 PetriNetUnfolderBase]: 2957/6939 cut-off events. [2023-08-25 21:18:16,741 INFO L125 PetriNetUnfolderBase]: For 43023/44771 co-relation queries the response was YES. [2023-08-25 21:18:16,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28797 conditions, 6939 events. 2957/6939 cut-off events. For 43023/44771 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 63196 event pairs, 624 based on Foata normal form. 110/7003 useless extension candidates. Maximal degree in co-relation 28754. Up to 2431 conditions per place. [2023-08-25 21:18:16,780 INFO L140 encePairwiseOnDemand]: 378/385 looper letters, 128 selfloop transitions, 28 changer transitions 488/652 dead transitions. [2023-08-25 21:18:16,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 652 transitions, 7339 flow [2023-08-25 21:18:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-08-25 21:18:16,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-08-25 21:18:16,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 7538 transitions. [2023-08-25 21:18:16,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3318511996478098 [2023-08-25 21:18:16,789 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 7538 transitions. [2023-08-25 21:18:16,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 7538 transitions. [2023-08-25 21:18:16,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:18:16,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 7538 transitions. [2023-08-25 21:18:16,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 127.76271186440678) internal successors, (7538), 59 states have internal predecessors, (7538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:16,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 385.0) internal successors, (23100), 60 states have internal predecessors, (23100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:16,817 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 385.0) internal successors, (23100), 60 states have internal predecessors, (23100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:16,817 INFO L175 Difference]: Start difference. First operand has 151 places, 195 transitions, 2739 flow. Second operand 59 states and 7538 transitions. [2023-08-25 21:18:16,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 652 transitions, 7339 flow [2023-08-25 21:18:17,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 652 transitions, 6752 flow, removed 221 selfloop flow, removed 13 redundant places. [2023-08-25 21:18:17,017 INFO L231 Difference]: Finished difference. Result has 207 places, 112 transitions, 1525 flow [2023-08-25 21:18:17,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=2399, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=1525, PETRI_PLACES=207, PETRI_TRANSITIONS=112} [2023-08-25 21:18:17,018 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 150 predicate places. [2023-08-25 21:18:17,018 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 112 transitions, 1525 flow [2023-08-25 21:18:17,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 121.72727272727273) internal successors, (4017), 33 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:17,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:18:17,019 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:18:17,031 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 21:18:17,226 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 21:18:17,226 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:18:17,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:18:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash 540516067, now seen corresponding path program 13 times [2023-08-25 21:18:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:18:17,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364448075] [2023-08-25 21:18:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:18:17,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:18:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:18:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:17,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:18:17,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364448075] [2023-08-25 21:18:17,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364448075] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:18:17,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844649595] [2023-08-25 21:18:17,933 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:18:17,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:18:17,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:18:17,937 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 21:18:17,963 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 21:18:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:18:18,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-25 21:18:18,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:18:18,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 21:18:18,383 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-25 21:18:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:18:18,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:18:18,508 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1789 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1789) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)) 5)) is different from false [2023-08-25 21:18:18,519 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:18:18,519 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 37 [2023-08-25 21:18:18,529 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 10 treesize of output 3 [2023-08-25 21:18:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 3 not checked. [2023-08-25 21:18:18,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844649595] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:18:18,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:18:18,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 27 [2023-08-25 21:18:18,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777395262] [2023-08-25 21:18:18,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:18:18,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-25 21:18:18,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:18:18,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-25 21:18:18,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=683, Unknown=1, NotChecked=52, Total=812 [2023-08-25 21:18:18,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 385 [2023-08-25 21:18:18,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 112 transitions, 1525 flow. Second operand has 29 states, 29 states have (on average 111.79310344827586) internal successors, (3242), 29 states have internal predecessors, (3242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:18,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:18:18,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 385 [2023-08-25 21:18:18,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:18:20,146 INFO L124 PetriNetUnfolderBase]: 1566/3189 cut-off events. [2023-08-25 21:18:20,146 INFO L125 PetriNetUnfolderBase]: For 35423/36370 co-relation queries the response was YES. [2023-08-25 21:18:20,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15037 conditions, 3189 events. 1566/3189 cut-off events. For 35423/36370 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 22166 event pairs, 215 based on Foata normal form. 12/3175 useless extension candidates. Maximal degree in co-relation 14983. Up to 1188 conditions per place. [2023-08-25 21:18:20,166 INFO L140 encePairwiseOnDemand]: 379/385 looper letters, 66 selfloop transitions, 72 changer transitions 127/269 dead transitions. [2023-08-25 21:18:20,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 269 transitions, 2771 flow [2023-08-25 21:18:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-25 21:18:20,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-25 21:18:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2400 transitions. [2023-08-25 21:18:20,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3116883116883117 [2023-08-25 21:18:20,170 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2400 transitions. [2023-08-25 21:18:20,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2400 transitions. [2023-08-25 21:18:20,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:18:20,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2400 transitions. [2023-08-25 21:18:20,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 120.0) internal successors, (2400), 20 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:20,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 385.0) internal successors, (8085), 21 states have internal predecessors, (8085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:20,179 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 385.0) internal successors, (8085), 21 states have internal predecessors, (8085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:20,179 INFO L175 Difference]: Start difference. First operand has 207 places, 112 transitions, 1525 flow. Second operand 20 states and 2400 transitions. [2023-08-25 21:18:20,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 269 transitions, 2771 flow [2023-08-25 21:18:20,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 269 transitions, 2409 flow, removed 117 selfloop flow, removed 30 redundant places. [2023-08-25 21:18:20,374 INFO L231 Difference]: Finished difference. Result has 136 places, 99 transitions, 1313 flow [2023-08-25 21:18:20,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1313, PETRI_PLACES=136, PETRI_TRANSITIONS=99} [2023-08-25 21:18:20,374 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 79 predicate places. [2023-08-25 21:18:20,375 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 99 transitions, 1313 flow [2023-08-25 21:18:20,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 111.79310344827586) internal successors, (3242), 29 states have internal predecessors, (3242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:20,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:18:20,375 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:18:20,387 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 21:18:20,581 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 21:18:20,582 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:18:20,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:18:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash 635039468, now seen corresponding path program 14 times [2023-08-25 21:18:20,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:18:20,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245775292] [2023-08-25 21:18:20,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:18:20,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:18:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:18:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 21:18:20,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:18:20,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245775292] [2023-08-25 21:18:20,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245775292] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:18:20,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948654763] [2023-08-25 21:18:20,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:18:20,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:18:20,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:18:20,729 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 21:18:20,739 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 21:18:20,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:18:20,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:18:20,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 21:18:20,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:18:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 21:18:21,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:18:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 21:18:21,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948654763] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:18:21,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:18:21,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-08-25 21:18:21,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490355466] [2023-08-25 21:18:21,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:18:21,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:18:21,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:18:21,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:18:21,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:18:21,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 385 [2023-08-25 21:18:21,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 99 transitions, 1313 flow. Second operand has 6 states, 6 states have (on average 157.33333333333334) internal successors, (944), 6 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:21,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:18:21,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 385 [2023-08-25 21:18:21,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:18:21,465 INFO L124 PetriNetUnfolderBase]: 1606/3916 cut-off events. [2023-08-25 21:18:21,466 INFO L125 PetriNetUnfolderBase]: For 27941/29153 co-relation queries the response was YES. [2023-08-25 21:18:21,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16618 conditions, 3916 events. 1606/3916 cut-off events. For 27941/29153 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 32798 event pairs, 267 based on Foata normal form. 35/3912 useless extension candidates. Maximal degree in co-relation 16577. Up to 1280 conditions per place. [2023-08-25 21:18:21,487 INFO L140 encePairwiseOnDemand]: 382/385 looper letters, 80 selfloop transitions, 90 changer transitions 0/178 dead transitions. [2023-08-25 21:18:21,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 178 transitions, 2828 flow [2023-08-25 21:18:21,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:18:21,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:18:21,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 983 transitions. [2023-08-25 21:18:21,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42554112554112555 [2023-08-25 21:18:21,491 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 983 transitions. [2023-08-25 21:18:21,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 983 transitions. [2023-08-25 21:18:21,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:18:21,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 983 transitions. [2023-08-25 21:18:21,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.83333333333334) internal successors, (983), 6 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:21,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 385.0) internal successors, (2695), 7 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:21,494 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 385.0) internal successors, (2695), 7 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:21,494 INFO L175 Difference]: Start difference. First operand has 136 places, 99 transitions, 1313 flow. Second operand 6 states and 983 transitions. [2023-08-25 21:18:21,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 178 transitions, 2828 flow [2023-08-25 21:18:21,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 178 transitions, 2504 flow, removed 100 selfloop flow, removed 20 redundant places. [2023-08-25 21:18:21,567 INFO L231 Difference]: Finished difference. Result has 104 places, 145 transitions, 2184 flow [2023-08-25 21:18:21,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2184, PETRI_PLACES=104, PETRI_TRANSITIONS=145} [2023-08-25 21:18:21,568 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 47 predicate places. [2023-08-25 21:18:21,568 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 145 transitions, 2184 flow [2023-08-25 21:18:21,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 157.33333333333334) internal successors, (944), 6 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:21,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:18:21,568 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:18:21,575 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 21:18:21,774 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 21:18:21,775 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:18:21,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:18:21,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1797074896, now seen corresponding path program 15 times [2023-08-25 21:18:21,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:18:21,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361623840] [2023-08-25 21:18:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:18:21,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:18:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:18:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:22,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:18:22,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361623840] [2023-08-25 21:18:22,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361623840] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:18:22,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081396227] [2023-08-25 21:18:22,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:18:22,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:18:22,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:18:22,496 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 21:18:22,496 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 21:18:23,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 21:18:23,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:18:23,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-25 21:18:23,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:18:23,702 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 21:18:23,703 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-08-25 21:18:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:23,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:18:23,859 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 21:18:23,859 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2023-08-25 21:18:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:24,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081396227] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:18:24,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:18:24,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 40 [2023-08-25 21:18:24,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042769616] [2023-08-25 21:18:24,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:18:24,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-08-25 21:18:24,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:18:24,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-08-25 21:18:24,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1442, Unknown=0, NotChecked=0, Total=1722 [2023-08-25 21:18:24,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 385 [2023-08-25 21:18:24,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 145 transitions, 2184 flow. Second operand has 42 states, 42 states have (on average 121.38095238095238) internal successors, (5098), 42 states have internal predecessors, (5098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:24,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:18:24,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 385 [2023-08-25 21:18:24,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:18:38,142 INFO L124 PetriNetUnfolderBase]: 4899/11160 cut-off events. [2023-08-25 21:18:38,142 INFO L125 PetriNetUnfolderBase]: For 53468/55988 co-relation queries the response was YES. [2023-08-25 21:18:38,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44129 conditions, 11160 events. 4899/11160 cut-off events. For 53468/55988 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 108607 event pairs, 771 based on Foata normal form. 314/11414 useless extension candidates. Maximal degree in co-relation 44097. Up to 4009 conditions per place. [2023-08-25 21:18:38,186 INFO L140 encePairwiseOnDemand]: 378/385 looper letters, 286 selfloop transitions, 89 changer transitions 834/1217 dead transitions. [2023-08-25 21:18:38,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 1217 transitions, 12114 flow [2023-08-25 21:18:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-08-25 21:18:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2023-08-25 21:18:38,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 16259 transitions. [2023-08-25 21:18:38,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33252888843440026 [2023-08-25 21:18:38,210 INFO L72 ComplementDD]: Start complementDD. Operand 127 states and 16259 transitions. [2023-08-25 21:18:38,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 16259 transitions. [2023-08-25 21:18:38,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:18:38,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 127 states and 16259 transitions. [2023-08-25 21:18:38,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 128 states, 127 states have (on average 128.0236220472441) internal successors, (16259), 127 states have internal predecessors, (16259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:38,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 128 states, 128 states have (on average 385.0) internal successors, (49280), 128 states have internal predecessors, (49280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:38,277 INFO L81 ComplementDD]: Finished complementDD. Result has 128 states, 128 states have (on average 385.0) internal successors, (49280), 128 states have internal predecessors, (49280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:38,278 INFO L175 Difference]: Start difference. First operand has 104 places, 145 transitions, 2184 flow. Second operand 127 states and 16259 transitions. [2023-08-25 21:18:38,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 1217 transitions, 12114 flow [2023-08-25 21:18:38,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 1217 transitions, 11806 flow, removed 154 selfloop flow, removed 0 redundant places. [2023-08-25 21:18:38,454 INFO L231 Difference]: Finished difference. Result has 339 places, 220 transitions, 3937 flow [2023-08-25 21:18:38,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=127, PETRI_FLOW=3937, PETRI_PLACES=339, PETRI_TRANSITIONS=220} [2023-08-25 21:18:38,454 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 282 predicate places. [2023-08-25 21:18:38,454 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 220 transitions, 3937 flow [2023-08-25 21:18:38,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 121.38095238095238) internal successors, (5098), 42 states have internal predecessors, (5098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:38,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:18:38,455 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:18:38,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-25 21:18:38,655 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 21:18:38,656 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:18:38,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:18:38,656 INFO L85 PathProgramCache]: Analyzing trace with hash -915243364, now seen corresponding path program 16 times [2023-08-25 21:18:38,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:18:38,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128454002] [2023-08-25 21:18:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:18:38,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:18:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:18:39,496 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:39,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:18:39,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128454002] [2023-08-25 21:18:39,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128454002] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:18:39,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677196012] [2023-08-25 21:18:39,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:18:39,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:18:39,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:18:39,497 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 21:18:39,499 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 21:18:39,750 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:18:39,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:18:39,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-25 21:18:39,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:18:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 21:18:39,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:18:39,931 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-25 21:18:39,931 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2023-08-25 21:18:39,945 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 21:18:39,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677196012] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:18:39,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:18:39,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 22 [2023-08-25 21:18:39,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965728791] [2023-08-25 21:18:39,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:18:39,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 21:18:39,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:18:39,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 21:18:39,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2023-08-25 21:18:39,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 385 [2023-08-25 21:18:39,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 220 transitions, 3937 flow. Second operand has 24 states, 24 states have (on average 121.75) internal successors, (2922), 24 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:39,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:18:39,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 385 [2023-08-25 21:18:39,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:18:46,217 INFO L124 PetriNetUnfolderBase]: 3785/8963 cut-off events. [2023-08-25 21:18:46,217 INFO L125 PetriNetUnfolderBase]: For 892942/895496 co-relation queries the response was YES. [2023-08-25 21:18:46,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67464 conditions, 8963 events. 3785/8963 cut-off events. For 892942/895496 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 85173 event pairs, 296 based on Foata normal form. 106/9009 useless extension candidates. Maximal degree in co-relation 67322. Up to 3161 conditions per place. [2023-08-25 21:18:46,318 INFO L140 encePairwiseOnDemand]: 378/385 looper letters, 274 selfloop transitions, 246 changer transitions 467/995 dead transitions. [2023-08-25 21:18:46,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 995 transitions, 17445 flow [2023-08-25 21:18:46,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2023-08-25 21:18:46,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2023-08-25 21:18:46,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 13696 transitions. [2023-08-25 21:18:46,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33246753246753247 [2023-08-25 21:18:46,337 INFO L72 ComplementDD]: Start complementDD. Operand 107 states and 13696 transitions. [2023-08-25 21:18:46,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 13696 transitions. [2023-08-25 21:18:46,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:18:46,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 107 states and 13696 transitions. [2023-08-25 21:18:46,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 108 states, 107 states have (on average 128.0) internal successors, (13696), 107 states have internal predecessors, (13696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:46,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 108 states, 108 states have (on average 385.0) internal successors, (41580), 108 states have internal predecessors, (41580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:46,491 INFO L81 ComplementDD]: Finished complementDD. Result has 108 states, 108 states have (on average 385.0) internal successors, (41580), 108 states have internal predecessors, (41580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:46,492 INFO L175 Difference]: Start difference. First operand has 339 places, 220 transitions, 3937 flow. Second operand 107 states and 13696 transitions. [2023-08-25 21:18:46,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 995 transitions, 17445 flow [2023-08-25 21:18:51,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 995 transitions, 11507 flow, removed 2965 selfloop flow, removed 72 redundant places. [2023-08-25 21:18:51,722 INFO L231 Difference]: Finished difference. Result has 335 places, 282 transitions, 5433 flow [2023-08-25 21:18:51,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=3423, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=107, PETRI_FLOW=5433, PETRI_PLACES=335, PETRI_TRANSITIONS=282} [2023-08-25 21:18:51,723 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 278 predicate places. [2023-08-25 21:18:51,723 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 282 transitions, 5433 flow [2023-08-25 21:18:51,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 121.75) internal successors, (2922), 24 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:18:51,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:18:51,723 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:18:51,729 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 21:18:51,923 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 21:18:51,924 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:18:51,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:18:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash -951036914, now seen corresponding path program 17 times [2023-08-25 21:18:51,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:18:51,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386218712] [2023-08-25 21:18:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:18:51,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:18:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:18:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:18:52,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:18:52,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386218712] [2023-08-25 21:18:52,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386218712] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:18:52,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643817247] [2023-08-25 21:18:52,859 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:18:52,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:18:52,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:18:52,860 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 21:18:52,861 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 21:19:03,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 21:19:03,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:19:03,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 62 conjunts are in the unsatisfiable core [2023-08-25 21:19:03,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:19:04,058 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 21:19:04,093 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 21:19:04,268 INFO L322 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-08-25 21:19:04,268 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 34 [2023-08-25 21:19:04,472 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:19:04,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:19:05,040 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:19:05,040 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 79 treesize of output 55 [2023-08-25 21:19:05,050 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:19:05,051 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 292 treesize of output 288 [2023-08-25 21:19:05,065 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:19:05,066 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 234 treesize of output 207 [2023-08-25 21:19:05,203 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:19:05,204 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 204 treesize of output 177 [2023-08-25 21:19:05,539 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:19:05,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643817247] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:19:05,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:19:05,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 43 [2023-08-25 21:19:05,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307209909] [2023-08-25 21:19:05,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:19:05,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-08-25 21:19:05,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:19:05,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-08-25 21:19:05,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1663, Unknown=0, NotChecked=0, Total=1980 [2023-08-25 21:19:05,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 385 [2023-08-25 21:19:05,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 282 transitions, 5433 flow. Second operand has 45 states, 45 states have (on average 102.82222222222222) internal successors, (4627), 45 states have internal predecessors, (4627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:19:05,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:19:05,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 385 [2023-08-25 21:19:05,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:19:17,557 INFO L124 PetriNetUnfolderBase]: 13388/22892 cut-off events. [2023-08-25 21:19:17,557 INFO L125 PetriNetUnfolderBase]: For 1149014/1149014 co-relation queries the response was YES. [2023-08-25 21:19:17,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155331 conditions, 22892 events. 13388/22892 cut-off events. For 1149014/1149014 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 182378 event pairs, 2739 based on Foata normal form. 12/22898 useless extension candidates. Maximal degree in co-relation 155218. Up to 12305 conditions per place. [2023-08-25 21:19:17,761 INFO L140 encePairwiseOnDemand]: 378/385 looper letters, 273 selfloop transitions, 50 changer transitions 996/1319 dead transitions. [2023-08-25 21:19:17,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 1319 transitions, 14199 flow [2023-08-25 21:19:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-08-25 21:19:17,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-08-25 21:19:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 9386 transitions. [2023-08-25 21:19:17,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2973075704783022 [2023-08-25 21:19:17,771 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 9386 transitions. [2023-08-25 21:19:17,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 9386 transitions. [2023-08-25 21:19:17,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:19:17,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 9386 transitions. [2023-08-25 21:19:17,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 114.46341463414635) internal successors, (9386), 82 states have internal predecessors, (9386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:19:17,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 385.0) internal successors, (31955), 83 states have internal predecessors, (31955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:19:17,806 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 385.0) internal successors, (31955), 83 states have internal predecessors, (31955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:19:17,806 INFO L175 Difference]: Start difference. First operand has 335 places, 282 transitions, 5433 flow. Second operand 82 states and 9386 transitions. [2023-08-25 21:19:17,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 1319 transitions, 14199 flow [2023-08-25 21:19:33,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 1319 transitions, 11611 flow, removed 1003 selfloop flow, removed 94 redundant places. [2023-08-25 21:19:33,153 INFO L231 Difference]: Finished difference. Result has 311 places, 233 transitions, 3868 flow [2023-08-25 21:19:33,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=4326, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=3868, PETRI_PLACES=311, PETRI_TRANSITIONS=233} [2023-08-25 21:19:33,153 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 254 predicate places. [2023-08-25 21:19:33,153 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 233 transitions, 3868 flow [2023-08-25 21:19:33,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 102.82222222222222) internal successors, (4627), 45 states have internal predecessors, (4627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:19:33,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:19:33,154 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:19:33,164 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 21:19:33,354 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 21:19:33,355 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:19:33,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:19:33,355 INFO L85 PathProgramCache]: Analyzing trace with hash -647139855, now seen corresponding path program 18 times [2023-08-25 21:19:33,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:19:33,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957871132] [2023-08-25 21:19:33,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:19:33,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:19:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:19:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-25 21:19:33,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:19:33,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957871132] [2023-08-25 21:19:33,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957871132] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:19:33,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305614785] [2023-08-25 21:19:33,504 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:19:33,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:19:33,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:19:33,508 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 21:19:33,509 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 21:19:40,155 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 21:19:40,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:19:40,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 21:19:40,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:19:40,208 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-25 21:19:40,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:19:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-25 21:19:40,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305614785] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:19:40,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:19:40,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2023-08-25 21:19:40,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208194596] [2023-08-25 21:19:40,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:19:40,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 21:19:40,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:19:40,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 21:19:40,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 21:19:40,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 385 [2023-08-25 21:19:40,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 233 transitions, 3868 flow. Second operand has 7 states, 7 states have (on average 157.14285714285714) internal successors, (1100), 7 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:19:40,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:19:40,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 385 [2023-08-25 21:19:40,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:19:41,843 INFO L124 PetriNetUnfolderBase]: 4467/10746 cut-off events. [2023-08-25 21:19:41,843 INFO L125 PetriNetUnfolderBase]: For 204997/207633 co-relation queries the response was YES. [2023-08-25 21:19:41,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59132 conditions, 10746 events. 4467/10746 cut-off events. For 204997/207633 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 106546 event pairs, 712 based on Foata normal form. 71/10702 useless extension candidates. Maximal degree in co-relation 59051. Up to 3451 conditions per place. [2023-08-25 21:19:41,940 INFO L140 encePairwiseOnDemand]: 382/385 looper letters, 146 selfloop transitions, 248 changer transitions 0/402 dead transitions. [2023-08-25 21:19:41,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 402 transitions, 8025 flow [2023-08-25 21:19:41,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 21:19:41,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 21:19:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1148 transitions. [2023-08-25 21:19:41,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42597402597402595 [2023-08-25 21:19:41,942 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1148 transitions. [2023-08-25 21:19:41,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1148 transitions. [2023-08-25 21:19:41,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:19:41,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1148 transitions. [2023-08-25 21:19:41,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:19:41,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 385.0) internal successors, (3080), 8 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 21:19:41,947 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 385.0) internal successors, (3080), 8 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 21:19:41,947 INFO L175 Difference]: Start difference. First operand has 311 places, 233 transitions, 3868 flow. Second operand 7 states and 1148 transitions. [2023-08-25 21:19:41,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 402 transitions, 8025 flow [2023-08-25 21:19:42,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 402 transitions, 7031 flow, removed 445 selfloop flow, removed 39 redundant places. [2023-08-25 21:19:42,972 INFO L231 Difference]: Finished difference. Result has 173 places, 361 transitions, 6567 flow [2023-08-25 21:19:42,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=3445, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6567, PETRI_PLACES=173, PETRI_TRANSITIONS=361} [2023-08-25 21:19:42,973 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 116 predicate places. [2023-08-25 21:19:42,973 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 361 transitions, 6567 flow [2023-08-25 21:19:42,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 157.14285714285714) internal successors, (1100), 7 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:19:42,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:19:42,974 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:19:42,982 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 21:19:43,174 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 21:19:43,174 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:19:43,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:19:43,175 INFO L85 PathProgramCache]: Analyzing trace with hash -713974500, now seen corresponding path program 19 times [2023-08-25 21:19:43,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:19:43,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051425485] [2023-08-25 21:19:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:19:43,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:19:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:19:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:19:44,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:19:44,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051425485] [2023-08-25 21:19:44,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051425485] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:19:44,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630327081] [2023-08-25 21:19:44,222 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:19:44,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:19:44,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:19:44,223 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 21:19:44,225 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 21:19:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:19:44,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-25 21:19:44,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:19:44,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 21:19:44,742 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-25 21:19:44,857 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-25 21:19:44,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:19:44,891 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2997 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2997) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 12)))) is different from false [2023-08-25 21:19:44,904 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:19:44,905 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 37 [2023-08-25 21:19:44,915 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 10 treesize of output 3 [2023-08-25 21:19:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 8 not checked. [2023-08-25 21:19:45,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630327081] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:19:45,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:19:45,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 11] total 33 [2023-08-25 21:19:45,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540735804] [2023-08-25 21:19:45,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:19:45,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-25 21:19:45,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:19:45,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-25 21:19:45,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1022, Unknown=1, NotChecked=64, Total=1190 [2023-08-25 21:19:45,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 385 [2023-08-25 21:19:45,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 361 transitions, 6567 flow. Second operand has 35 states, 35 states have (on average 111.71428571428571) internal successors, (3910), 35 states have internal predecessors, (3910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:19:45,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:19:45,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 385 [2023-08-25 21:19:45,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:19:57,126 INFO L124 PetriNetUnfolderBase]: 20723/40205 cut-off events. [2023-08-25 21:19:57,126 INFO L125 PetriNetUnfolderBase]: For 380741/385882 co-relation queries the response was YES. [2023-08-25 21:19:57,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199722 conditions, 40205 events. 20723/40205 cut-off events. For 380741/385882 co-relation queries the response was YES. Maximal size of possible extension queue 1782. Compared 403065 event pairs, 1651 based on Foata normal form. 119/40200 useless extension candidates. Maximal degree in co-relation 199673. Up to 14142 conditions per place. [2023-08-25 21:19:57,470 INFO L140 encePairwiseOnDemand]: 374/385 looper letters, 735 selfloop transitions, 1076 changer transitions 176/1991 dead transitions. [2023-08-25 21:19:57,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 1991 transitions, 30548 flow [2023-08-25 21:19:57,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-08-25 21:19:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-08-25 21:19:57,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 10729 transitions. [2023-08-25 21:19:57,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31667650531286895 [2023-08-25 21:19:57,481 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 10729 transitions. [2023-08-25 21:19:57,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 10729 transitions. [2023-08-25 21:19:57,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:19:57,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 10729 transitions. [2023-08-25 21:19:57,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 121.92045454545455) internal successors, (10729), 88 states have internal predecessors, (10729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:19:57,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 385.0) internal successors, (34265), 89 states have internal predecessors, (34265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:19:57,520 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 385.0) internal successors, (34265), 89 states have internal predecessors, (34265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:19:57,521 INFO L175 Difference]: Start difference. First operand has 173 places, 361 transitions, 6567 flow. Second operand 88 states and 10729 transitions. [2023-08-25 21:19:57,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 1991 transitions, 30548 flow [2023-08-25 21:20:00,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 1991 transitions, 28362 flow, removed 1093 selfloop flow, removed 1 redundant places. [2023-08-25 21:20:00,086 INFO L231 Difference]: Finished difference. Result has 298 places, 1150 transitions, 23975 flow [2023-08-25 21:20:00,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=5969, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=23975, PETRI_PLACES=298, PETRI_TRANSITIONS=1150} [2023-08-25 21:20:00,087 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 241 predicate places. [2023-08-25 21:20:00,087 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 1150 transitions, 23975 flow [2023-08-25 21:20:00,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 111.71428571428571) internal successors, (3910), 35 states have internal predecessors, (3910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:20:00,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:20:00,088 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:20:00,094 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 21:20:00,288 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 21:20:00,289 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:20:00,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:20:00,290 INFO L85 PathProgramCache]: Analyzing trace with hash 414736333, now seen corresponding path program 20 times [2023-08-25 21:20:00,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:20:00,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429084535] [2023-08-25 21:20:00,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:20:00,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:20:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:20:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:20:01,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:20:01,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429084535] [2023-08-25 21:20:01,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429084535] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:20:01,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15031222] [2023-08-25 21:20:01,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:20:01,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:20:01,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:20:01,141 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 21:20:01,174 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 21:20:01,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:20:01,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:20:01,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-25 21:20:01,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:20:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-25 21:20:01,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:20:01,806 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-25 21:20:01,806 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 13 [2023-08-25 21:20:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-25 21:20:01,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15031222] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:20:01,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:20:01,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 11] total 29 [2023-08-25 21:20:01,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779440107] [2023-08-25 21:20:01,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:20:01,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-25 21:20:01,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:20:01,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-25 21:20:01,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2023-08-25 21:20:01,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 385 [2023-08-25 21:20:01,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 1150 transitions, 23975 flow. Second operand has 31 states, 31 states have (on average 121.61290322580645) internal successors, (3770), 31 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:20:01,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:20:01,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 385 [2023-08-25 21:20:01,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:20:23,958 INFO L124 PetriNetUnfolderBase]: 19171/43375 cut-off events. [2023-08-25 21:20:23,958 INFO L125 PetriNetUnfolderBase]: For 611023/624590 co-relation queries the response was YES. [2023-08-25 21:20:24,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251204 conditions, 43375 events. 19171/43375 cut-off events. For 611023/624590 co-relation queries the response was YES. Maximal size of possible extension queue 2321. Compared 507077 event pairs, 2677 based on Foata normal form. 839/44097 useless extension candidates. Maximal degree in co-relation 251116. Up to 14704 conditions per place. [2023-08-25 21:20:24,595 INFO L140 encePairwiseOnDemand]: 378/385 looper letters, 463 selfloop transitions, 589 changer transitions 1984/3044 dead transitions. [2023-08-25 21:20:24,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 3044 transitions, 53588 flow [2023-08-25 21:20:24,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2023-08-25 21:20:24,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2023-08-25 21:20:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 20757 transitions. [2023-08-25 21:20:24,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3328042328042328 [2023-08-25 21:20:24,612 INFO L72 ComplementDD]: Start complementDD. Operand 162 states and 20757 transitions. [2023-08-25 21:20:24,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 162 states and 20757 transitions. [2023-08-25 21:20:24,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:20:24,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 162 states and 20757 transitions. [2023-08-25 21:20:24,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 163 states, 162 states have (on average 128.12962962962962) internal successors, (20757), 162 states have internal predecessors, (20757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:20:24,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 163 states, 163 states have (on average 385.0) internal successors, (62755), 163 states have internal predecessors, (62755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:20:24,690 INFO L81 ComplementDD]: Finished complementDD. Result has 163 states, 163 states have (on average 385.0) internal successors, (62755), 163 states have internal predecessors, (62755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:20:24,690 INFO L175 Difference]: Start difference. First operand has 298 places, 1150 transitions, 23975 flow. Second operand 162 states and 20757 transitions. [2023-08-25 21:20:24,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 3044 transitions, 53588 flow [2023-08-25 21:20:28,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 3044 transitions, 41718 flow, removed 5907 selfloop flow, removed 10 redundant places. [2023-08-25 21:20:28,862 INFO L231 Difference]: Finished difference. Result has 468 places, 697 transitions, 13434 flow [2023-08-25 21:20:28,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=17699, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1052, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=442, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=162, PETRI_FLOW=13434, PETRI_PLACES=468, PETRI_TRANSITIONS=697} [2023-08-25 21:20:28,863 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 411 predicate places. [2023-08-25 21:20:28,863 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 697 transitions, 13434 flow [2023-08-25 21:20:28,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 121.61290322580645) internal successors, (3770), 31 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:20:28,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:20:28,864 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:20:28,869 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 21:20:29,064 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 21:20:29,064 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:20:29,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:20:29,065 INFO L85 PathProgramCache]: Analyzing trace with hash -903496765, now seen corresponding path program 21 times [2023-08-25 21:20:29,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:20:29,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426004249] [2023-08-25 21:20:29,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:20:29,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:20:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:20:30,179 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:20:30,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:20:30,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426004249] [2023-08-25 21:20:30,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426004249] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:20:30,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164602196] [2023-08-25 21:20:30,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:20:30,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:20:30,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:20:30,180 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 21:20:30,183 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 21:20:50,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 21:20:50,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:20:50,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-25 21:20:50,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:20:50,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 21:20:50,682 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 16 treesize of output 18 [2023-08-25 21:20:50,910 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 21:20:50,912 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:20:50,912 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2023-08-25 21:20:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 21:20:50,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:20:51,243 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:20:51,243 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 34 [2023-08-25 21:20:51,248 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 13 treesize of output 7 [2023-08-25 21:20:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 21:20:51,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164602196] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:20:51,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:20:51,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 44 [2023-08-25 21:20:51,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693138124] [2023-08-25 21:20:51,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:20:51,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-08-25 21:20:51,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:20:51,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-08-25 21:20:51,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1857, Unknown=0, NotChecked=0, Total=2070 [2023-08-25 21:20:51,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 385 [2023-08-25 21:20:51,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 697 transitions, 13434 flow. Second operand has 46 states, 46 states have (on average 111.58695652173913) internal successors, (5133), 46 states have internal predecessors, (5133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:20:51,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:20:51,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 385 [2023-08-25 21:20:51,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:20:59,445 INFO L124 PetriNetUnfolderBase]: 9133/18318 cut-off events. [2023-08-25 21:20:59,446 INFO L125 PetriNetUnfolderBase]: For 263603/269862 co-relation queries the response was YES. [2023-08-25 21:20:59,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109659 conditions, 18318 events. 9133/18318 cut-off events. For 263603/269862 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 169410 event pairs, 4286 based on Foata normal form. 72/18314 useless extension candidates. Maximal degree in co-relation 109554. Up to 15458 conditions per place. [2023-08-25 21:20:59,625 INFO L140 encePairwiseOnDemand]: 379/385 looper letters, 498 selfloop transitions, 38 changer transitions 151/691 dead transitions. [2023-08-25 21:20:59,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 691 transitions, 13805 flow [2023-08-25 21:20:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 21:20:59,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 21:20:59,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2822 transitions. [2023-08-25 21:20:59,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3054112554112554 [2023-08-25 21:20:59,629 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2822 transitions. [2023-08-25 21:20:59,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2822 transitions. [2023-08-25 21:20:59,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:20:59,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2822 transitions. [2023-08-25 21:20:59,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 117.58333333333333) internal successors, (2822), 24 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:20:59,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 385.0) internal successors, (9625), 25 states have internal predecessors, (9625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:20:59,639 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 385.0) internal successors, (9625), 25 states have internal predecessors, (9625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:20:59,639 INFO L175 Difference]: Start difference. First operand has 468 places, 697 transitions, 13434 flow. Second operand 24 states and 2822 transitions. [2023-08-25 21:20:59,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 691 transitions, 13805 flow [2023-08-25 21:21:01,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 691 transitions, 11948 flow, removed 523 selfloop flow, removed 61 redundant places. [2023-08-25 21:21:01,047 INFO L231 Difference]: Finished difference. Result has 289 places, 525 transitions, 9620 flow [2023-08-25 21:21:01,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=9903, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=9620, PETRI_PLACES=289, PETRI_TRANSITIONS=525} [2023-08-25 21:21:01,048 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 232 predicate places. [2023-08-25 21:21:01,048 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 525 transitions, 9620 flow [2023-08-25 21:21:01,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 111.58695652173913) internal successors, (5133), 46 states have internal predecessors, (5133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:21:01,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:21:01,049 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:21:01,060 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 21:21:01,249 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 21:21:01,249 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:21:01,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:21:01,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1614977309, now seen corresponding path program 22 times [2023-08-25 21:21:01,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:21:01,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843413025] [2023-08-25 21:21:01,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:21:01,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:21:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:21:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:21:02,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:21:02,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843413025] [2023-08-25 21:21:02,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843413025] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:21:02,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204359032] [2023-08-25 21:21:02,797 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:21:02,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:21:02,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:21:02,798 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 21:21:02,799 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 21:21:03,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:21:03,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:21:03,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-25 21:21:03,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:21:03,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 21:21:03,481 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-25 21:21:03,634 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:21:03,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:21:03,662 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3697 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3697) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 16)))) is different from false [2023-08-25 21:21:03,671 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 21:21:03,671 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 37 [2023-08-25 21:21:03,677 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 10 treesize of output 3 [2023-08-25 21:21:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 21 trivial. 5 not checked. [2023-08-25 21:21:03,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204359032] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:21:03,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:21:03,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 13] total 43 [2023-08-25 21:21:03,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193818322] [2023-08-25 21:21:03,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:21:03,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-08-25 21:21:03,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:21:03,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-08-25 21:21:03,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1764, Unknown=1, NotChecked=84, Total=1980 [2023-08-25 21:21:03,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 385 [2023-08-25 21:21:03,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 525 transitions, 9620 flow. Second operand has 45 states, 45 states have (on average 111.5111111111111) internal successors, (5018), 45 states have internal predecessors, (5018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:21:03,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:21:03,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 385 [2023-08-25 21:21:03,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:21:46,811 INFO L124 PetriNetUnfolderBase]: 38138/74589 cut-off events. [2023-08-25 21:21:46,811 INFO L125 PetriNetUnfolderBase]: For 866418/882769 co-relation queries the response was YES. [2023-08-25 21:21:47,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401045 conditions, 74589 events. 38138/74589 cut-off events. For 866418/882769 co-relation queries the response was YES. Maximal size of possible extension queue 2943. Compared 804951 event pairs, 2031 based on Foata normal form. 426/74864 useless extension candidates. Maximal degree in co-relation 400972. Up to 26033 conditions per place. [2023-08-25 21:21:47,939 INFO L140 encePairwiseOnDemand]: 374/385 looper letters, 2025 selfloop transitions, 2147 changer transitions 345/4521 dead transitions. [2023-08-25 21:21:47,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 4521 transitions, 64861 flow [2023-08-25 21:21:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2023-08-25 21:21:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2023-08-25 21:21:48,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 27316 transitions. [2023-08-25 21:21:48,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31816434686389844 [2023-08-25 21:21:48,094 INFO L72 ComplementDD]: Start complementDD. Operand 223 states and 27316 transitions. [2023-08-25 21:21:48,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 223 states and 27316 transitions. [2023-08-25 21:21:48,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:21:48,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 223 states and 27316 transitions. [2023-08-25 21:21:48,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 224 states, 223 states have (on average 122.4932735426009) internal successors, (27316), 223 states have internal predecessors, (27316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:21:48,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 224 states, 224 states have (on average 385.0) internal successors, (86240), 224 states have internal predecessors, (86240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:21:48,194 INFO L81 ComplementDD]: Finished complementDD. Result has 224 states, 224 states have (on average 385.0) internal successors, (86240), 224 states have internal predecessors, (86240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:21:48,194 INFO L175 Difference]: Start difference. First operand has 289 places, 525 transitions, 9620 flow. Second operand 223 states and 27316 transitions. [2023-08-25 21:21:48,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 4521 transitions, 64861 flow [2023-08-25 21:21:55,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 4521 transitions, 59716 flow, removed 2169 selfloop flow, removed 25 redundant places. [2023-08-25 21:21:55,708 INFO L231 Difference]: Finished difference. Result has 541 places, 2270 transitions, 42479 flow [2023-08-25 21:21:55,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=9195, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=481, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=223, PETRI_FLOW=42479, PETRI_PLACES=541, PETRI_TRANSITIONS=2270} [2023-08-25 21:21:55,709 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 484 predicate places. [2023-08-25 21:21:55,709 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 2270 transitions, 42479 flow [2023-08-25 21:21:55,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 111.5111111111111) internal successors, (5018), 45 states have internal predecessors, (5018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:21:55,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:21:55,710 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:21:55,718 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 21:21:55,917 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 21:21:55,918 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 48 more)] === [2023-08-25 21:21:55,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:21:55,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1502706952, now seen corresponding path program 23 times [2023-08-25 21:21:55,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:21:55,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686221667] [2023-08-25 21:21:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:21:55,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:21:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:21:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-25 21:21:56,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:21:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686221667] [2023-08-25 21:21:56,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686221667] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:21:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160626253] [2023-08-25 21:21:56,118 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:21:56,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:21:56,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:21:56,121 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 21:21:56,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process Received shutdown request... [2023-08-25 21:31:16,185 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 21:31:16,185 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 21:31:17,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-25 21:31:17,390 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forcibly destroying the process [2023-08-25 21:31:17,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 137 [2023-08-25 21:31:17,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-25 21:31:17,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-25 21:31:17,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-08-25 21:31:17,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744507522] [2023-08-25 21:31:17,422 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-25 21:31:17,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 21:31:17,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:31:17,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 21:31:17,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-25 21:31:17,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 385 [2023-08-25 21:31:17,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 2270 transitions, 42479 flow. Second operand has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:31:17,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:31:17,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 385 [2023-08-25 21:31:17,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:31:17,438 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONASSERT (51 of 52 remaining) [2023-08-25 21:31:17,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-25 21:31:17,439 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-25 21:31:17,440 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (50 of 52 remaining) [2023-08-25 21:31:17,440 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (49 of 52 remaining) [2023-08-25 21:31:17,440 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (48 of 52 remaining) [2023-08-25 21:31:17,440 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (47 of 52 remaining) [2023-08-25 21:31:17,440 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (46 of 52 remaining) [2023-08-25 21:31:17,440 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONDATA_RACE (45 of 52 remaining) [2023-08-25 21:31:17,440 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONDATA_RACE (44 of 52 remaining) [2023-08-25 21:31:17,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONDATA_RACE (43 of 52 remaining) [2023-08-25 21:31:17,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (42 of 52 remaining) [2023-08-25 21:31:17,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (41 of 52 remaining) [2023-08-25 21:31:17,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (40 of 52 remaining) [2023-08-25 21:31:17,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (39 of 52 remaining) [2023-08-25 21:31:17,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (38 of 52 remaining) [2023-08-25 21:31:17,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONDATA_RACE (37 of 52 remaining) [2023-08-25 21:31:17,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONDATA_RACE (36 of 52 remaining) [2023-08-25 21:31:17,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONDATA_RACE (35 of 52 remaining) [2023-08-25 21:31:17,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONDATA_RACE (34 of 52 remaining) [2023-08-25 21:31:17,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONDATA_RACE (33 of 52 remaining) [2023-08-25 21:31:17,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err10ASSERT_VIOLATIONDATA_RACE (32 of 52 remaining) [2023-08-25 21:31:17,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (31 of 52 remaining) [2023-08-25 21:31:17,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (30 of 52 remaining) [2023-08-25 21:31:17,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (29 of 52 remaining) [2023-08-25 21:31:17,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (28 of 52 remaining) [2023-08-25 21:31:17,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (27 of 52 remaining) [2023-08-25 21:31:17,443 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (26 of 52 remaining) [2023-08-25 21:31:17,443 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (25 of 52 remaining) [2023-08-25 21:31:17,443 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (24 of 52 remaining) [2023-08-25 21:31:17,443 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (23 of 52 remaining) [2023-08-25 21:31:17,443 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (22 of 52 remaining) [2023-08-25 21:31:17,443 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (21 of 52 remaining) [2023-08-25 21:31:17,443 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 52 remaining) [2023-08-25 21:31:17,443 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 52 remaining) [2023-08-25 21:31:17,443 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (18 of 52 remaining) [2023-08-25 21:31:17,443 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (17 of 52 remaining) [2023-08-25 21:31:17,443 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (16 of 52 remaining) [2023-08-25 21:31:17,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (15 of 52 remaining) [2023-08-25 21:31:17,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (14 of 52 remaining) [2023-08-25 21:31:17,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONDATA_RACE (13 of 52 remaining) [2023-08-25 21:31:17,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONDATA_RACE (12 of 52 remaining) [2023-08-25 21:31:17,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONDATA_RACE (11 of 52 remaining) [2023-08-25 21:31:17,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (10 of 52 remaining) [2023-08-25 21:31:17,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (9 of 52 remaining) [2023-08-25 21:31:17,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (8 of 52 remaining) [2023-08-25 21:31:17,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (7 of 52 remaining) [2023-08-25 21:31:17,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (6 of 52 remaining) [2023-08-25 21:31:17,445 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONDATA_RACE (5 of 52 remaining) [2023-08-25 21:31:17,445 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONDATA_RACE (4 of 52 remaining) [2023-08-25 21:31:17,445 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONDATA_RACE (3 of 52 remaining) [2023-08-25 21:31:17,445 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONDATA_RACE (2 of 52 remaining) [2023-08-25 21:31:17,445 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err9ASSERT_VIOLATIONDATA_RACE (1 of 52 remaining) [2023-08-25 21:31:17,445 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err10ASSERT_VIOLATIONDATA_RACE (0 of 52 remaining) [2023-08-25 21:31:17,445 INFO L445 BasicCegarLoop]: Path program histogram: [23, 1, 1, 1, 1, 1, 1] [2023-08-25 21:31:17,450 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 21:31:17,450 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 21:31:17,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 09:31:17 BasicIcfg [2023-08-25 21:31:17,452 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 21:31:17,453 INFO L158 Benchmark]: Toolchain (without parser) took 823777.53ms. Allocated memory was 373.3MB in the beginning and 7.2GB in the end (delta: 6.8GB). Free memory was 350.5MB in the beginning and 5.4GB in the end (delta: -5.0GB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. [2023-08-25 21:31:17,453 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 373.3MB. Free memory was 350.7MB in the beginning and 350.6MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 21:31:17,453 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.23ms. Allocated memory is still 373.3MB. Free memory was 350.5MB in the beginning and 338.6MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-25 21:31:17,453 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.54ms. Allocated memory is still 373.3MB. Free memory was 338.6MB in the beginning and 336.2MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-25 21:31:17,453 INFO L158 Benchmark]: Boogie Preprocessor took 52.07ms. Allocated memory is still 373.3MB. Free memory was 336.2MB in the beginning and 334.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 21:31:17,457 INFO L158 Benchmark]: RCFGBuilder took 785.76ms. Allocated memory is still 373.3MB. Free memory was 333.7MB in the beginning and 323.2MB in the end (delta: 10.5MB). Peak memory consumption was 39.7MB. Max. memory is 16.0GB. [2023-08-25 21:31:17,458 INFO L158 Benchmark]: TraceAbstraction took 822594.87ms. Allocated memory was 373.3MB in the beginning and 7.2GB in the end (delta: 6.8GB). Free memory was 322.4MB in the beginning and 5.4GB in the end (delta: -5.0GB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. [2023-08-25 21:31:17,460 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 373.3MB. Free memory was 350.7MB in the beginning and 350.6MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 279.23ms. Allocated memory is still 373.3MB. Free memory was 350.5MB in the beginning and 338.6MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.54ms. Allocated memory is still 373.3MB. Free memory was 338.6MB in the beginning and 336.2MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 52.07ms. Allocated memory is still 373.3MB. Free memory was 336.2MB in the beginning and 334.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 785.76ms. Allocated memory is still 373.3MB. Free memory was 333.7MB in the beginning and 323.2MB in the end (delta: 10.5MB). Peak memory consumption was 39.7MB. Max. memory is 16.0GB. * TraceAbstraction took 822594.87ms. Allocated memory was 373.3MB in the beginning and 7.2GB in the end (delta: 6.8GB). Free memory was 322.4MB in the beginning and 5.4GB in the end (delta: -5.0GB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.8s, 177 PlacesBefore, 57 PlacesAfterwards, 179 TransitionsBefore, 53 TransitionsAfterwards, 1910 CoEnabledTransitionPairs, 7 FixpointIterations, 122 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 13 TrivialYvCompositions, 7 ConcurrentYvCompositions, 6 ChoiceCompositions, 195 TotalNumberOfCompositions, 5643 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2568, independent: 2391, independent conditional: 0, independent unconditional: 2391, dependent: 177, dependent conditional: 0, dependent unconditional: 177, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 814, independent: 782, independent conditional: 0, independent unconditional: 782, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2568, independent: 1609, independent conditional: 0, independent unconditional: 1609, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 814, unknown conditional: 0, unknown unconditional: 814] , Statistics on independence cache: Total cache size (in pairs): 123, Positive cache size: 110, Positive conditional cache size: 0, Positive unconditional cache size: 110, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing Executor. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 219 locations, 52 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: 822.5s, OverallIterations: 29, TraceHistogramMax: 6, PathProgramHistogramMax: 23, EmptinessCheckTime: 0.0s, AutomataDifference: 180.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 16341 SdHoareTripleChecker+Valid, 29.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16341 mSDsluCounter, 1320 SdHoareTripleChecker+Invalid, 26.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4000 IncrementalHoareTripleChecker+Unchecked, 1244 mSDsCounter, 1038 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35843 IncrementalHoareTripleChecker+Invalid, 40885 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1038 mSolverCounterUnsat, 76 mSDtfsCounter, 35843 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2429 GetRequests, 943 SyntacticMatches, 24 SemanticMatches, 1462 ConstructedPredicates, 4 IntricatePredicates, 7 DeprecatedPredicates, 60831 ImplicationChecksByTransitivity, 63.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42479occurred in iteration=28, InterpolantAutomatonStates: 1111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 41.5s SatisfiabilityAnalysisTime, 24.1s InterpolantComputationTime, 1388 NumberOfCodeBlocks, 1387 NumberOfCodeBlocksAsserted, 75 NumberOfCheckSat, 1935 ConstructedInterpolants, 96 QuantifiedInterpolants, 19838 SizeOfPredicates, 222 NumberOfNonLiveVariables, 9229 ConjunctsInSsa, 610 ConjunctsInUnsatCore, 71 InterpolantComputations, 7 PerfectInterpolantSequences, 483/1469 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