/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 05:45:30,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 05:45:30,237 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 05:45:30,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 05:45:30,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 05:45:30,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 05:45:30,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 05:45:30,282 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 05:45:30,283 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 05:45:30,283 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 05:45:30,283 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 05:45:30,283 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 05:45:30,284 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 05:45:30,284 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 05:45:30,284 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 05:45:30,284 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 05:45:30,285 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 05:45:30,285 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 05:45:30,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 05:45:30,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 05:45:30,286 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 05:45:30,289 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 05:45:30,290 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 05:45:30,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 05:45:30,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 05:45:30,293 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 05:45:30,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 05:45:30,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 05:45:30,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 05:45:30,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 05:45:30,295 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 05:45:30,295 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 05:45:30,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 05:45:30,295 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 05:45:30,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 05:45:30,295 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 05:45:30,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 05:45:30,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 05:45:30,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 05:45:30,597 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 05:45:30,599 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 05:45:30,600 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-08-25 05:45:31,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 05:45:31,858 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 05:45:31,858 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-08-25 05:45:31,866 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a32c883d5/59775e6a0d2a4296b754a45efcc4603c/FLAG4ebea6ee2 [2023-08-25 05:45:31,879 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a32c883d5/59775e6a0d2a4296b754a45efcc4603c [2023-08-25 05:45:31,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 05:45:31,885 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 05:45:31,888 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 05:45:31,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 05:45:31,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 05:45:31,891 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:45:31" (1/1) ... [2023-08-25 05:45:31,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be62d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:45:31, skipping insertion in model container [2023-08-25 05:45:31,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:45:31" (1/1) ... [2023-08-25 05:45:31,919 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 05:45:32,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 05:45:32,109 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 05:45:32,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 05:45:32,158 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 05:45:32,158 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 05:45:32,163 INFO L206 MainTranslator]: Completed translation [2023-08-25 05:45:32,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:45:32 WrapperNode [2023-08-25 05:45:32,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 05:45:32,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 05:45:32,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 05:45:32,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 05:45:32,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:45:32" (1/1) ... [2023-08-25 05:45:32,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:45:32" (1/1) ... [2023-08-25 05:45:32,222 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 660 [2023-08-25 05:45:32,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 05:45:32,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 05:45:32,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 05:45:32,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 05:45:32,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:45:32" (1/1) ... [2023-08-25 05:45:32,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:45:32" (1/1) ... [2023-08-25 05:45:32,233 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:45:32" (1/1) ... [2023-08-25 05:45:32,234 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:45:32" (1/1) ... [2023-08-25 05:45:32,248 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:45:32" (1/1) ... [2023-08-25 05:45:32,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:45:32" (1/1) ... [2023-08-25 05:45:32,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:45:32" (1/1) ... [2023-08-25 05:45:32,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:45:32" (1/1) ... [2023-08-25 05:45:32,259 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 05:45:32,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 05:45:32,259 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 05:45:32,259 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 05:45:32,260 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:45:32" (1/1) ... [2023-08-25 05:45:32,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 05:45:32,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:45:32,286 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 05:45:32,294 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 05:45:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 05:45:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 05:45:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 05:45:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 05:45:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 05:45:32,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 05:45:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 05:45:32,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 05:45:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-25 05:45:32,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-25 05:45:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-25 05:45:32,319 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-25 05:45:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 05:45:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 05:45:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 05:45:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 05:45:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 05:45:32,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 05:45:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 05:45:32,321 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 05:45:32,445 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 05:45:32,447 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 05:45:33,272 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 05:45:33,788 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 05:45:33,789 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-25 05:45:33,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:45:33 BoogieIcfgContainer [2023-08-25 05:45:33,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 05:45:33,793 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 05:45:33,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 05:45:33,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 05:45:33,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:45:31" (1/3) ... [2023-08-25 05:45:33,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2924820c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:45:33, skipping insertion in model container [2023-08-25 05:45:33,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:45:32" (2/3) ... [2023-08-25 05:45:33,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2924820c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:45:33, skipping insertion in model container [2023-08-25 05:45:33,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:45:33" (3/3) ... [2023-08-25 05:45:33,797 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2023-08-25 05:45:33,807 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 05:45:33,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 100 error locations. [2023-08-25 05:45:33,809 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 05:45:33,956 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-25 05:45:33,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 453 places, 463 transitions, 958 flow [2023-08-25 05:45:34,079 INFO L124 PetriNetUnfolderBase]: 23/459 cut-off events. [2023-08-25 05:45:34,080 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-25 05:45:34,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 459 events. 23/459 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 641 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 374. Up to 2 conditions per place. [2023-08-25 05:45:34,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 453 places, 463 transitions, 958 flow [2023-08-25 05:45:34,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 436 places, 446 transitions, 916 flow [2023-08-25 05:45:34,106 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 05:45:34,113 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 436 places, 446 transitions, 916 flow [2023-08-25 05:45:34,115 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 436 places, 446 transitions, 916 flow [2023-08-25 05:45:34,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 446 transitions, 916 flow [2023-08-25 05:45:34,181 INFO L124 PetriNetUnfolderBase]: 23/446 cut-off events. [2023-08-25 05:45:34,182 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-25 05:45:34,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 446 events. 23/446 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 647 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 374. Up to 2 conditions per place. [2023-08-25 05:45:34,190 INFO L119 LiptonReduction]: Number of co-enabled transitions 14696 [2023-08-25 05:45:47,977 INFO L134 LiptonReduction]: Checked pairs total: 85755 [2023-08-25 05:45:47,977 INFO L136 LiptonReduction]: Total number of compositions: 475 [2023-08-25 05:45:47,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 05:45:47,994 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;@47d849f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 05:45:47,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 174 error locations. [2023-08-25 05:45:47,995 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 05:45:47,995 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 05:45:47,995 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 05:45:47,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:45:47,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 05:45:47,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 05:45:47,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:45:47,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2580, now seen corresponding path program 1 times [2023-08-25 05:45:48,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:45:48,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201598795] [2023-08-25 05:45:48,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:45:48,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:45:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:45:48,081 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 05:45:48,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:45:48,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201598795] [2023-08-25 05:45:48,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201598795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:45:48,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:45:48,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 05:45:48,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168405295] [2023-08-25 05:45:48,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:45:48,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 05:45:48,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:45:48,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 05:45:48,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 05:45:48,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 357 out of 938 [2023-08-25 05:45:48,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 154 transitions, 332 flow. Second operand has 2 states, 2 states have (on average 357.5) internal successors, (715), 2 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:48,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:45:48,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 357 of 938 [2023-08-25 05:45:48,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:45:48,789 INFO L124 PetriNetUnfolderBase]: 4065/6830 cut-off events. [2023-08-25 05:45:48,789 INFO L125 PetriNetUnfolderBase]: For 388/388 co-relation queries the response was YES. [2023-08-25 05:45:48,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12529 conditions, 6830 events. 4065/6830 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 40954 event pairs, 3061 based on Foata normal form. 0/5486 useless extension candidates. Maximal degree in co-relation 10400. Up to 5331 conditions per place. [2023-08-25 05:45:48,821 INFO L140 encePairwiseOnDemand]: 843/938 looper letters, 39 selfloop transitions, 0 changer transitions 0/59 dead transitions. [2023-08-25 05:45:48,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 59 transitions, 220 flow [2023-08-25 05:45:48,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 05:45:48,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 05:45:48,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 848 transitions. [2023-08-25 05:45:48,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520255863539446 [2023-08-25 05:45:48,836 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 848 transitions. [2023-08-25 05:45:48,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 848 transitions. [2023-08-25 05:45:48,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:45:48,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 848 transitions. [2023-08-25 05:45:48,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 424.0) internal successors, (848), 2 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:48,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 938.0) internal successors, (2814), 3 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:48,851 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 938.0) internal successors, (2814), 3 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:48,852 INFO L175 Difference]: Start difference. First operand has 161 places, 154 transitions, 332 flow. Second operand 2 states and 848 transitions. [2023-08-25 05:45:48,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 59 transitions, 220 flow [2023-08-25 05:45:48,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 204 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-25 05:45:48,870 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 126 flow [2023-08-25 05:45:48,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=938, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=126, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-08-25 05:45:48,873 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -102 predicate places. [2023-08-25 05:45:48,873 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 126 flow [2023-08-25 05:45:48,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 357.5) internal successors, (715), 2 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:48,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:45:48,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:45:48,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 05:45:48,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 05:45:48,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:45:48,875 INFO L85 PathProgramCache]: Analyzing trace with hash -172776256, now seen corresponding path program 1 times [2023-08-25 05:45:48,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:45:48,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188160832] [2023-08-25 05:45:48,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:45:48,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:45:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:45:49,327 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 05:45:49,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:45:49,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188160832] [2023-08-25 05:45:49,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188160832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:45:49,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:45:49,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 05:45:49,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508721341] [2023-08-25 05:45:49,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:45:49,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 05:45:49,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:45:49,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 05:45:49,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 05:45:49,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 938 [2023-08-25 05:45:49,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 126 flow. Second operand has 6 states, 6 states have (on average 317.5) internal successors, (1905), 6 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:49,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:45:49,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 938 [2023-08-25 05:45:49,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:45:50,660 INFO L124 PetriNetUnfolderBase]: 11845/15210 cut-off events. [2023-08-25 05:45:50,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 05:45:50,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30554 conditions, 15210 events. 11845/15210 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 59404 event pairs, 1399 based on Foata normal form. 0/12341 useless extension candidates. Maximal degree in co-relation 30551. Up to 6634 conditions per place. [2023-08-25 05:45:50,716 INFO L140 encePairwiseOnDemand]: 933/938 looper letters, 126 selfloop transitions, 4 changer transitions 0/130 dead transitions. [2023-08-25 05:45:50,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 130 transitions, 528 flow [2023-08-25 05:45:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 05:45:50,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 05:45:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2021 transitions. [2023-08-25 05:45:50,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35909737029140015 [2023-08-25 05:45:50,721 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2021 transitions. [2023-08-25 05:45:50,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2021 transitions. [2023-08-25 05:45:50,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:45:50,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2021 transitions. [2023-08-25 05:45:50,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 336.8333333333333) internal successors, (2021), 6 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:50,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 938.0) internal successors, (6566), 7 states have internal predecessors, (6566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:50,734 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 938.0) internal successors, (6566), 7 states have internal predecessors, (6566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:50,734 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 126 flow. Second operand 6 states and 2021 transitions. [2023-08-25 05:45:50,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 130 transitions, 528 flow [2023-08-25 05:45:50,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 130 transitions, 528 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 05:45:50,736 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 132 flow [2023-08-25 05:45:50,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=938, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-08-25 05:45:50,737 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -98 predicate places. [2023-08-25 05:45:50,737 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 132 flow [2023-08-25 05:45:50,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 317.5) internal successors, (1905), 6 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:50,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:45:50,738 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 05:45:50,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 05:45:50,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 05:45:50,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:45:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1958473709, now seen corresponding path program 1 times [2023-08-25 05:45:50,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:45:50,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962922106] [2023-08-25 05:45:50,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:45:50,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:45:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:45:50,996 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 05:45:50,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:45:50,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962922106] [2023-08-25 05:45:50,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962922106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:45:50,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:45:50,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 05:45:50,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057868957] [2023-08-25 05:45:50,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:45:50,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 05:45:50,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:45:50,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 05:45:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 05:45:50,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 938 [2023-08-25 05:45:51,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 318.8333333333333) internal successors, (1913), 6 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 05:45:51,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:45:51,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 938 [2023-08-25 05:45:51,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:45:52,291 INFO L124 PetriNetUnfolderBase]: 11605/14890 cut-off events. [2023-08-25 05:45:52,292 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2023-08-25 05:45:52,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31515 conditions, 14890 events. 11605/14890 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 57783 event pairs, 7783 based on Foata normal form. 0/12157 useless extension candidates. Maximal degree in co-relation 31511. Up to 12897 conditions per place. [2023-08-25 05:45:52,350 INFO L140 encePairwiseOnDemand]: 933/938 looper letters, 105 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2023-08-25 05:45:52,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 109 transitions, 452 flow [2023-08-25 05:45:52,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 05:45:52,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 05:45:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2000 transitions. [2023-08-25 05:45:52,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35536602700781805 [2023-08-25 05:45:52,356 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2000 transitions. [2023-08-25 05:45:52,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2000 transitions. [2023-08-25 05:45:52,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:45:52,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2000 transitions. [2023-08-25 05:45:52,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 333.3333333333333) internal successors, (2000), 6 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:52,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 938.0) internal successors, (6566), 7 states have internal predecessors, (6566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:52,368 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 938.0) internal successors, (6566), 7 states have internal predecessors, (6566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:52,368 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 132 flow. Second operand 6 states and 2000 transitions. [2023-08-25 05:45:52,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 109 transitions, 452 flow [2023-08-25 05:45:52,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 445 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 05:45:52,378 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 131 flow [2023-08-25 05:45:52,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=938, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=131, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-25 05:45:52,379 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -98 predicate places. [2023-08-25 05:45:52,379 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 131 flow [2023-08-25 05:45:52,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 318.8333333333333) internal successors, (1913), 6 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 05:45:52,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:45:52,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:45:52,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 05:45:52,380 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 05:45:52,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:45:52,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1963218916, now seen corresponding path program 1 times [2023-08-25 05:45:52,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:45:52,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915410762] [2023-08-25 05:45:52,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:45:52,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:45:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:45:52,714 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 05:45:52,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:45:52,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915410762] [2023-08-25 05:45:52,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915410762] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:45:52,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:45:52,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 05:45:52,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514213636] [2023-08-25 05:45:52,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:45:52,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 05:45:52,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:45:52,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 05:45:52,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 05:45:52,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 938 [2023-08-25 05:45:52,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 320.1666666666667) internal successors, (1921), 6 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:52,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:45:52,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 938 [2023-08-25 05:45:52,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:45:53,855 INFO L124 PetriNetUnfolderBase]: 11573/14842 cut-off events. [2023-08-25 05:45:53,856 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 05:45:53,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30539 conditions, 14842 events. 11573/14842 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 57561 event pairs, 8727 based on Foata normal form. 0/12133 useless extension candidates. Maximal degree in co-relation 30535. Up to 14545 conditions per place. [2023-08-25 05:45:53,893 INFO L140 encePairwiseOnDemand]: 933/938 looper letters, 84 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2023-08-25 05:45:53,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 369 flow [2023-08-25 05:45:53,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 05:45:53,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 05:45:53,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1979 transitions. [2023-08-25 05:45:53,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35163468372423595 [2023-08-25 05:45:53,898 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1979 transitions. [2023-08-25 05:45:53,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1979 transitions. [2023-08-25 05:45:53,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:45:53,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1979 transitions. [2023-08-25 05:45:53,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 329.8333333333333) internal successors, (1979), 6 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:53,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 938.0) internal successors, (6566), 7 states have internal predecessors, (6566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:53,911 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 938.0) internal successors, (6566), 7 states have internal predecessors, (6566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:53,911 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 131 flow. Second operand 6 states and 1979 transitions. [2023-08-25 05:45:53,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 369 flow [2023-08-25 05:45:53,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 362 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 05:45:53,914 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 130 flow [2023-08-25 05:45:53,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=938, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2023-08-25 05:45:53,916 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -98 predicate places. [2023-08-25 05:45:53,916 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 130 flow [2023-08-25 05:45:53,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 320.1666666666667) internal successors, (1921), 6 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:53,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:45:53,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:45:53,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 05:45:53,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 05:45:53,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:45:53,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2083739519, now seen corresponding path program 1 times [2023-08-25 05:45:53,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:45:53,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154213474] [2023-08-25 05:45:53,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:45:53,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:45:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:45:54,277 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 05:45:54,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:45:54,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154213474] [2023-08-25 05:45:54,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154213474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:45:54,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:45:54,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 05:45:54,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436111357] [2023-08-25 05:45:54,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:45:54,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 05:45:54,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:45:54,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 05:45:54,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 05:45:54,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 938 [2023-08-25 05:45:54,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:54,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:45:54,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 938 [2023-08-25 05:45:54,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:45:55,384 INFO L124 PetriNetUnfolderBase]: 11569/14834 cut-off events. [2023-08-25 05:45:55,384 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 05:45:55,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30347 conditions, 14834 events. 11569/14834 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 57575 event pairs, 8850 based on Foata normal form. 0/12130 useless extension candidates. Maximal degree in co-relation 30343. Up to 14793 conditions per place. [2023-08-25 05:45:55,420 INFO L140 encePairwiseOnDemand]: 933/938 looper letters, 67 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-08-25 05:45:55,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 71 transitions, 302 flow [2023-08-25 05:45:55,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 05:45:55,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 05:45:55,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1962 transitions. [2023-08-25 05:45:55,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3486140724946695 [2023-08-25 05:45:55,424 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1962 transitions. [2023-08-25 05:45:55,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1962 transitions. [2023-08-25 05:45:55,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:45:55,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1962 transitions. [2023-08-25 05:45:55,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 327.0) internal successors, (1962), 6 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:55,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 938.0) internal successors, (6566), 7 states have internal predecessors, (6566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:55,433 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 938.0) internal successors, (6566), 7 states have internal predecessors, (6566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:55,433 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 130 flow. Second operand 6 states and 1962 transitions. [2023-08-25 05:45:55,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 71 transitions, 302 flow [2023-08-25 05:45:55,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 71 transitions, 295 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 05:45:55,436 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 129 flow [2023-08-25 05:45:55,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=938, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2023-08-25 05:45:55,438 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -98 predicate places. [2023-08-25 05:45:55,438 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 129 flow [2023-08-25 05:45:55,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:55,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:45:55,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:45:55,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 05:45:55,439 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 05:45:55,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:45:55,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1657356713, now seen corresponding path program 1 times [2023-08-25 05:45:55,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:45:55,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554589103] [2023-08-25 05:45:55,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:45:55,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:45:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:45:55,641 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 05:45:55,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:45:55,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554589103] [2023-08-25 05:45:55,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554589103] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:45:55,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:45:55,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 05:45:55,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632577215] [2023-08-25 05:45:55,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:45:55,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 05:45:55,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:45:55,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 05:45:55,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 05:45:55,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 938 [2023-08-25 05:45:55,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 129 flow. Second operand has 5 states, 5 states have (on average 356.4) internal successors, (1782), 5 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:55,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:45:55,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 938 [2023-08-25 05:45:55,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:45:56,518 INFO L124 PetriNetUnfolderBase]: 7531/10912 cut-off events. [2023-08-25 05:45:56,518 INFO L125 PetriNetUnfolderBase]: For 191/1341 co-relation queries the response was YES. [2023-08-25 05:45:56,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21289 conditions, 10912 events. 7531/10912 cut-off events. For 191/1341 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 55437 event pairs, 1129 based on Foata normal form. 20/9230 useless extension candidates. Maximal degree in co-relation 21285. Up to 4721 conditions per place. [2023-08-25 05:45:56,547 INFO L140 encePairwiseOnDemand]: 932/938 looper letters, 91 selfloop transitions, 6 changer transitions 10/123 dead transitions. [2023-08-25 05:45:56,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 123 transitions, 490 flow [2023-08-25 05:45:56,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 05:45:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 05:45:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2215 transitions. [2023-08-25 05:45:56,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39356787491115847 [2023-08-25 05:45:56,553 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2215 transitions. [2023-08-25 05:45:56,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2215 transitions. [2023-08-25 05:45:56,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:45:56,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2215 transitions. [2023-08-25 05:45:56,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 369.1666666666667) internal successors, (2215), 6 states have internal predecessors, (2215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:56,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 938.0) internal successors, (6566), 7 states have internal predecessors, (6566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:56,577 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 938.0) internal successors, (6566), 7 states have internal predecessors, (6566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:56,578 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 129 flow. Second operand 6 states and 2215 transitions. [2023-08-25 05:45:56,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 123 transitions, 490 flow [2023-08-25 05:45:56,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 123 transitions, 483 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 05:45:56,580 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 161 flow [2023-08-25 05:45:56,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=938, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2023-08-25 05:45:56,580 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -94 predicate places. [2023-08-25 05:45:56,581 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 161 flow [2023-08-25 05:45:56,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 356.4) internal successors, (1782), 5 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:56,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:45:56,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:45:56,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 05:45:56,582 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 05:45:56,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:45:56,582 INFO L85 PathProgramCache]: Analyzing trace with hash 446175025, now seen corresponding path program 1 times [2023-08-25 05:45:56,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:45:56,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224405125] [2023-08-25 05:45:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:45:56,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:45:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:45:56,732 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 05:45:56,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:45:56,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224405125] [2023-08-25 05:45:56,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224405125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:45:56,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:45:56,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 05:45:56,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454165073] [2023-08-25 05:45:56,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:45:56,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 05:45:56,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:45:56,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 05:45:56,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 05:45:56,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 938 [2023-08-25 05:45:56,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 325.5) internal successors, (1302), 4 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:56,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:45:56,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 938 [2023-08-25 05:45:56,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:45:57,725 INFO L124 PetriNetUnfolderBase]: 8581/13309 cut-off events. [2023-08-25 05:45:57,725 INFO L125 PetriNetUnfolderBase]: For 3806/3966 co-relation queries the response was YES. [2023-08-25 05:45:57,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29018 conditions, 13309 events. 8581/13309 cut-off events. For 3806/3966 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 78587 event pairs, 6438 based on Foata normal form. 198/11807 useless extension candidates. Maximal degree in co-relation 29011. Up to 9873 conditions per place. [2023-08-25 05:45:57,784 INFO L140 encePairwiseOnDemand]: 933/938 looper letters, 42 selfloop transitions, 2 changer transitions 27/87 dead transitions. [2023-08-25 05:45:57,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 87 transitions, 372 flow [2023-08-25 05:45:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 05:45:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 05:45:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1341 transitions. [2023-08-25 05:45:57,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.357409381663113 [2023-08-25 05:45:57,787 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1341 transitions. [2023-08-25 05:45:57,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1341 transitions. [2023-08-25 05:45:57,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:45:57,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1341 transitions. [2023-08-25 05:45:57,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 335.25) internal successors, (1341), 4 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:57,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 938.0) internal successors, (4690), 5 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:57,794 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 938.0) internal successors, (4690), 5 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:57,794 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 161 flow. Second operand 4 states and 1341 transitions. [2023-08-25 05:45:57,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 87 transitions, 372 flow [2023-08-25 05:45:57,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 87 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 05:45:57,814 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 172 flow [2023-08-25 05:45:57,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=938, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-08-25 05:45:57,815 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -91 predicate places. [2023-08-25 05:45:57,815 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 172 flow [2023-08-25 05:45:57,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 325.5) internal successors, (1302), 4 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:57,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:45:57,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:45:57,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 05:45:57,815 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 05:45:57,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:45:57,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1256325510, now seen corresponding path program 1 times [2023-08-25 05:45:57,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:45:57,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270721042] [2023-08-25 05:45:57,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:45:57,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:45:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:45:58,046 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 05:45:58,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:45:58,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270721042] [2023-08-25 05:45:58,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270721042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:45:58,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:45:58,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 05:45:58,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513372189] [2023-08-25 05:45:58,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:45:58,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 05:45:58,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:45:58,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 05:45:58,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 05:45:58,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 938 [2023-08-25 05:45:58,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 356.2) internal successors, (1781), 5 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:45:58,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:45:58,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 938 [2023-08-25 05:45:58,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:46:00,145 INFO L124 PetriNetUnfolderBase]: 17025/24815 cut-off events. [2023-08-25 05:46:00,145 INFO L125 PetriNetUnfolderBase]: For 7986/8676 co-relation queries the response was YES. [2023-08-25 05:46:00,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57353 conditions, 24815 events. 17025/24815 cut-off events. For 7986/8676 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 146758 event pairs, 4041 based on Foata normal form. 318/22972 useless extension candidates. Maximal degree in co-relation 57344. Up to 8874 conditions per place. [2023-08-25 05:46:00,283 INFO L140 encePairwiseOnDemand]: 932/938 looper letters, 114 selfloop transitions, 11 changer transitions 0/141 dead transitions. [2023-08-25 05:46:00,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 141 transitions, 651 flow [2023-08-25 05:46:00,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 05:46:00,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 05:46:00,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2215 transitions. [2023-08-25 05:46:00,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39356787491115847 [2023-08-25 05:46:00,289 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2215 transitions. [2023-08-25 05:46:00,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2215 transitions. [2023-08-25 05:46:00,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:46:00,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2215 transitions. [2023-08-25 05:46:00,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 369.1666666666667) internal successors, (2215), 6 states have internal predecessors, (2215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:46:00,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 938.0) internal successors, (6566), 7 states have internal predecessors, (6566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:46:00,300 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 938.0) internal successors, (6566), 7 states have internal predecessors, (6566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:46:00,300 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 172 flow. Second operand 6 states and 2215 transitions. [2023-08-25 05:46:00,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 141 transitions, 651 flow [2023-08-25 05:46:00,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 141 transitions, 647 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 05:46:00,307 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 267 flow [2023-08-25 05:46:00,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=938, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2023-08-25 05:46:00,307 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -84 predicate places. [2023-08-25 05:46:00,307 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 267 flow [2023-08-25 05:46:00,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 356.2) internal successors, (1781), 5 states have internal predecessors, (1781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:46:00,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:46:00,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:46:00,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 05:46:00,308 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 05:46:00,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:46:00,309 INFO L85 PathProgramCache]: Analyzing trace with hash -27584717, now seen corresponding path program 1 times [2023-08-25 05:46:00,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:46:00,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859486534] [2023-08-25 05:46:00,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:46:00,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:46:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:46:00,978 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 05:46:00,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:46:00,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859486534] [2023-08-25 05:46:00,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859486534] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:46:00,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340416337] [2023-08-25 05:46:00,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:46:00,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:46:00,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:46:00,982 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 05:46:01,030 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 05:46:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:46:01,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 05:46:01,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:46:01,588 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-08-25 05:46:01,626 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 05:46:01,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:46:01,705 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 05:46:01,706 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 17 [2023-08-25 05:46:01,854 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 05:46:01,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340416337] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:46:01,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:46:01,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-25 05:46:01,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874743757] [2023-08-25 05:46:01,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:46:01,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 05:46:01,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:46:01,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 05:46:01,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-08-25 05:46:01,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 938 [2023-08-25 05:46:01,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 267 flow. Second operand has 18 states, 18 states have (on average 294.6111111111111) internal successors, (5303), 18 states have internal predecessors, (5303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:46:01,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:46:01,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 938 [2023-08-25 05:46:01,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:46:13,895 INFO L124 PetriNetUnfolderBase]: 80708/118006 cut-off events. [2023-08-25 05:46:13,895 INFO L125 PetriNetUnfolderBase]: For 130060/131106 co-relation queries the response was YES. [2023-08-25 05:46:14,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323374 conditions, 118006 events. 80708/118006 cut-off events. For 130060/131106 co-relation queries the response was YES. Maximal size of possible extension queue 3265. Compared 855493 event pairs, 6767 based on Foata normal form. 920/108033 useless extension candidates. Maximal degree in co-relation 323361. Up to 26933 conditions per place. [2023-08-25 05:46:14,592 INFO L140 encePairwiseOnDemand]: 927/938 looper letters, 393 selfloop transitions, 58 changer transitions 17/484 dead transitions. [2023-08-25 05:46:14,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 484 transitions, 2735 flow [2023-08-25 05:46:14,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-25 05:46:14,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-25 05:46:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5938 transitions. [2023-08-25 05:46:14,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33318370553248794 [2023-08-25 05:46:14,602 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5938 transitions. [2023-08-25 05:46:14,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5938 transitions. [2023-08-25 05:46:14,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:46:14,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5938 transitions. [2023-08-25 05:46:14,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 312.5263157894737) internal successors, (5938), 19 states have internal predecessors, (5938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:46:14,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 938.0) internal successors, (18760), 20 states have internal predecessors, (18760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:46:14,626 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 938.0) internal successors, (18760), 20 states have internal predecessors, (18760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:46:14,626 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 267 flow. Second operand 19 states and 5938 transitions. [2023-08-25 05:46:14,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 484 transitions, 2735 flow [2023-08-25 05:46:14,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 484 transitions, 2699 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-08-25 05:46:14,724 INFO L231 Difference]: Finished difference. Result has 106 places, 126 transitions, 772 flow [2023-08-25 05:46:14,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=938, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=772, PETRI_PLACES=106, PETRI_TRANSITIONS=126} [2023-08-25 05:46:14,725 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -55 predicate places. [2023-08-25 05:46:14,725 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 126 transitions, 772 flow [2023-08-25 05:46:14,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 294.6111111111111) internal successors, (5303), 18 states have internal predecessors, (5303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:46:14,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:46:14,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:46:14,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-25 05:46:14,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:46:14,932 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 05:46:14,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:46:14,933 INFO L85 PathProgramCache]: Analyzing trace with hash -511059989, now seen corresponding path program 2 times [2023-08-25 05:46:14,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:46:14,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123870369] [2023-08-25 05:46:14,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:46:14,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:46:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:46:16,183 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 05:46:16,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:46:16,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123870369] [2023-08-25 05:46:16,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123870369] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:46:16,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455515263] [2023-08-25 05:46:16,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:46:16,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:46:16,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:46:16,197 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 05:46:16,198 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 05:46:16,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:46:16,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:46:16,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:46:16,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:46:16,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 05:46:16,729 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 05:46:16,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-08-25 05:46:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 05:46:16,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:46:16,869 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_720 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_720) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) c_~total~0))) is different from false [2023-08-25 05:46:16,908 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 05:46:16,908 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 37 [2023-08-25 05:46:16,913 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 11 treesize of output 5 [2023-08-25 05:46:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-25 05:46:17,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455515263] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:46:17,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:46:17,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 18 [2023-08-25 05:46:17,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382203989] [2023-08-25 05:46:17,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:46:17,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 05:46:17,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:46:17,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 05:46:17,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=291, Unknown=1, NotChecked=34, Total=380 [2023-08-25 05:46:17,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 938 [2023-08-25 05:46:17,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 126 transitions, 772 flow. Second operand has 20 states, 20 states have (on average 258.75) internal successors, (5175), 20 states have internal predecessors, (5175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:46:17,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:46:17,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 938 [2023-08-25 05:46:17,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:47:06,075 INFO L124 PetriNetUnfolderBase]: 366481/470712 cut-off events. [2023-08-25 05:47:06,075 INFO L125 PetriNetUnfolderBase]: For 908059/908059 co-relation queries the response was YES. [2023-08-25 05:47:08,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494311 conditions, 470712 events. 366481/470712 cut-off events. For 908059/908059 co-relation queries the response was YES. Maximal size of possible extension queue 8926. Compared 2873130 event pairs, 71157 based on Foata normal form. 415/451117 useless extension candidates. Maximal degree in co-relation 1494286. Up to 261373 conditions per place. [2023-08-25 05:47:10,237 INFO L140 encePairwiseOnDemand]: 927/938 looper letters, 305 selfloop transitions, 65 changer transitions 28/398 dead transitions. [2023-08-25 05:47:10,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 398 transitions, 2739 flow [2023-08-25 05:47:10,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 05:47:10,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 05:47:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3328 transitions. [2023-08-25 05:47:10,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2956645344705046 [2023-08-25 05:47:10,243 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3328 transitions. [2023-08-25 05:47:10,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3328 transitions. [2023-08-25 05:47:10,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:47:10,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3328 transitions. [2023-08-25 05:47:10,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 277.3333333333333) internal successors, (3328), 12 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:47:10,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 938.0) internal successors, (12194), 13 states have internal predecessors, (12194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:47:10,257 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 938.0) internal successors, (12194), 13 states have internal predecessors, (12194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:47:10,257 INFO L175 Difference]: Start difference. First operand has 106 places, 126 transitions, 772 flow. Second operand 12 states and 3328 transitions. [2023-08-25 05:47:10,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 398 transitions, 2739 flow [2023-08-25 05:47:31,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 398 transitions, 2701 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-08-25 05:47:31,461 INFO L231 Difference]: Finished difference. Result has 119 places, 168 transitions, 1317 flow [2023-08-25 05:47:31,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=938, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1317, PETRI_PLACES=119, PETRI_TRANSITIONS=168} [2023-08-25 05:47:31,461 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -42 predicate places. [2023-08-25 05:47:31,462 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 168 transitions, 1317 flow [2023-08-25 05:47:31,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 258.75) internal successors, (5175), 20 states have internal predecessors, (5175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:47:31,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:47:31,463 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:47:31,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-25 05:47:31,668 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,SelfDestructingSolverStorable9 [2023-08-25 05:47:31,668 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 05:47:31,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:47:31,669 INFO L85 PathProgramCache]: Analyzing trace with hash 910688326, now seen corresponding path program 3 times [2023-08-25 05:47:31,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:47:31,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178718542] [2023-08-25 05:47:31,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:47:31,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:47:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:47:33,230 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 05:47:33,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:47:33,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178718542] [2023-08-25 05:47:33,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178718542] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:47:33,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207968579] [2023-08-25 05:47:33,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:47:33,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:47:33,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:47:33,250 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 05:47:33,308 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 05:47:33,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 05:47:33,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:47:33,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 05:47:33,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:47:34,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 05:47:34,044 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 05:47:34,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 05:47:34,088 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 05:47:34,131 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-08-25 05:47:34,162 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 05:47:34,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:47:36,417 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 05:47:36,417 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 173 treesize of output 157 [2023-08-25 05:47:36,431 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 31 treesize of output 25 [2023-08-25 05:47:36,455 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 32 treesize of output 20 [2023-08-25 05:47:36,611 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 05:47:36,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207968579] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:47:36,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:47:36,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 22 [2023-08-25 05:47:36,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944008872] [2023-08-25 05:47:36,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:47:36,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 05:47:36,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:47:36,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 05:47:36,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=468, Unknown=7, NotChecked=0, Total=552 [2023-08-25 05:47:36,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 938 [2023-08-25 05:47:36,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 168 transitions, 1317 flow. Second operand has 24 states, 24 states have (on average 257.875) internal successors, (6189), 24 states have internal predecessors, (6189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:47:36,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:47:36,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 938 [2023-08-25 05:47:36,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:48:57,893 INFO L124 PetriNetUnfolderBase]: 554269/712058 cut-off events. [2023-08-25 05:48:57,894 INFO L125 PetriNetUnfolderBase]: For 1845320/1845320 co-relation queries the response was YES. [2023-08-25 05:49:01,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2410522 conditions, 712058 events. 554269/712058 cut-off events. For 1845320/1845320 co-relation queries the response was YES. Maximal size of possible extension queue 13804. Compared 4545483 event pairs, 130175 based on Foata normal form. 7/681774 useless extension candidates. Maximal degree in co-relation 2410493. Up to 356485 conditions per place. [2023-08-25 05:49:04,453 INFO L140 encePairwiseOnDemand]: 928/938 looper letters, 323 selfloop transitions, 107 changer transitions 27/457 dead transitions. [2023-08-25 05:49:04,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 457 transitions, 3658 flow [2023-08-25 05:49:04,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 05:49:04,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 05:49:04,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3583 transitions. [2023-08-25 05:49:04,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2938330326390028 [2023-08-25 05:49:04,461 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3583 transitions. [2023-08-25 05:49:04,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3583 transitions. [2023-08-25 05:49:04,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:49:04,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3583 transitions. [2023-08-25 05:49:04,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 275.61538461538464) internal successors, (3583), 13 states have internal predecessors, (3583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:49:04,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 938.0) internal successors, (13132), 14 states have internal predecessors, (13132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:49:04,501 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 938.0) internal successors, (13132), 14 states have internal predecessors, (13132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:49:04,501 INFO L175 Difference]: Start difference. First operand has 119 places, 168 transitions, 1317 flow. Second operand 13 states and 3583 transitions. [2023-08-25 05:49:04,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 457 transitions, 3658 flow [2023-08-25 05:50:52,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 457 transitions, 3651 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-25 05:50:52,458 INFO L231 Difference]: Finished difference. Result has 132 places, 225 transitions, 2242 flow [2023-08-25 05:50:52,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=938, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2242, PETRI_PLACES=132, PETRI_TRANSITIONS=225} [2023-08-25 05:50:52,458 INFO L281 CegarLoopForPetriNet]: 161 programPoint places, -29 predicate places. [2023-08-25 05:50:52,458 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 225 transitions, 2242 flow [2023-08-25 05:50:52,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 257.875) internal successors, (6189), 24 states have internal predecessors, (6189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:50:52,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:50:52,460 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:50:52,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-25 05:50:52,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:50:52,667 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 170 more)] === [2023-08-25 05:50:52,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:50:52,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1944935392, now seen corresponding path program 4 times [2023-08-25 05:50:52,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:50:52,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359418912] [2023-08-25 05:50:52,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:50:52,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:50:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:50:53,649 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 05:50:53,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:50:53,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359418912] [2023-08-25 05:50:53,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359418912] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:50:53,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813435479] [2023-08-25 05:50:53,650 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:50:53,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:50:53,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:50:53,651 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 05:50:53,652 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 05:50:54,019 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:50:54,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:50:54,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-25 05:50:54,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:50:54,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 05:50:54,218 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 05:50:54,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 05:50:54,249 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 05:50:54,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 05:50:54,289 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 05:50:54,319 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-08-25 05:50:54,345 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 05:50:54,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:50:54,407 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1069 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1069) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) c_~total~0))) is different from false [2023-08-25 05:50:54,417 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1069 (Array Int Int)) (v_ArrVal_1068 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1068) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1069) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) c_~total~0))) is different from false [2023-08-25 05:51:02,522 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 05:51:02,523 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 341 treesize of output 325 [2023-08-25 05:51:02,529 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 73 treesize of output 67 [2023-08-25 05:51:02,533 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 67 treesize of output 55 [2023-08-25 05:51:02,569 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 74 treesize of output 50 [2023-08-25 05:51:02,672 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 05:51:02,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813435479] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:51:02,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:51:02,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 23 [2023-08-25 05:51:02,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787957563] [2023-08-25 05:51:02,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:51:02,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 05:51:02,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:51:02,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 05:51:02,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=424, Unknown=6, NotChecked=86, Total=600 [2023-08-25 05:51:02,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 938 [2023-08-25 05:51:02,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 225 transitions, 2242 flow. Second operand has 25 states, 25 states have (on average 266.56) internal successors, (6664), 25 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 05:51:02,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:51:02,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 938 [2023-08-25 05:51:02,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand