/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread/triangular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 07:52:31,050 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 07:52:31,136 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 07:52:31,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 07:52:31,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 07:52:31,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 07:52:31,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 07:52:31,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 07:52:31,170 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 07:52:31,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 07:52:31,174 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 07:52:31,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 07:52:31,174 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 07:52:31,175 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 07:52:31,175 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 07:52:31,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 07:52:31,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 07:52:31,176 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 07:52:31,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 07:52:31,177 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 07:52:31,177 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 07:52:31,177 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 07:52:31,177 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 07:52:31,178 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 07:52:31,178 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 07:52:31,178 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 07:52:31,179 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 07:52:31,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:52:31,179 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 07:52:31,179 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 07:52:31,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 07:52:31,180 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 07:52:31,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 07:52:31,181 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 07:52:31,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 07:52:31,181 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 07:52:31,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 07:52:31,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 07:52:31,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 07:52:31,466 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 07:52:31,467 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 07:52:31,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2023-08-25 07:52:32,671 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 07:52:32,912 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 07:52:32,912 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2023-08-25 07:52:32,925 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b9d4d67d/fe6221fb89cb4f0d8b403ee7d62a74b4/FLAGb411fc838 [2023-08-25 07:52:32,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b9d4d67d/fe6221fb89cb4f0d8b403ee7d62a74b4 [2023-08-25 07:52:32,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 07:52:32,939 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 07:52:32,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 07:52:32,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 07:52:32,942 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 07:52:32,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:52:32" (1/1) ... [2023-08-25 07:52:32,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54562642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:52:32, skipping insertion in model container [2023-08-25 07:52:32,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:52:32" (1/1) ... [2023-08-25 07:52:32,974 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 07:52:33,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:52:33,261 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 07:52:33,287 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-25 07:52:33,288 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-25 07:52:33,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:52:33,337 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 07:52:33,337 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 07:52:33,343 INFO L206 MainTranslator]: Completed translation [2023-08-25 07:52:33,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:52:33 WrapperNode [2023-08-25 07:52:33,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 07:52:33,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 07:52:33,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 07:52:33,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 07:52:33,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:52:33" (1/1) ... [2023-08-25 07:52:33,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:52:33" (1/1) ... [2023-08-25 07:52:33,377 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2023-08-25 07:52:33,377 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 07:52:33,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 07:52:33,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 07:52:33,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 07:52:33,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:52:33" (1/1) ... [2023-08-25 07:52:33,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:52:33" (1/1) ... [2023-08-25 07:52:33,386 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:52:33" (1/1) ... [2023-08-25 07:52:33,387 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:52:33" (1/1) ... [2023-08-25 07:52:33,391 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:52:33" (1/1) ... [2023-08-25 07:52:33,394 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:52:33" (1/1) ... [2023-08-25 07:52:33,395 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:52:33" (1/1) ... [2023-08-25 07:52:33,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:52:33" (1/1) ... [2023-08-25 07:52:33,398 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 07:52:33,398 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 07:52:33,399 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 07:52:33,399 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 07:52:33,399 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:52:33" (1/1) ... [2023-08-25 07:52:33,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:52:33,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:52:33,428 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 07:52:33,438 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 07:52:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-25 07:52:33,464 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-25 07:52:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-25 07:52:33,465 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-25 07:52:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 07:52:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 07:52:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 07:52:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 07:52:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 07:52:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 07:52:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 07:52:33,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 07:52:33,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 07:52:33,467 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 07:52:33,575 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 07:52:33,577 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 07:52:33,776 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 07:52:33,829 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 07:52:33,829 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 07:52:33,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:52:33 BoogieIcfgContainer [2023-08-25 07:52:33,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 07:52:33,833 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 07:52:33,833 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 07:52:33,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 07:52:33,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:52:32" (1/3) ... [2023-08-25 07:52:33,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2580b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:52:33, skipping insertion in model container [2023-08-25 07:52:33,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:52:33" (2/3) ... [2023-08-25 07:52:33,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2580b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:52:33, skipping insertion in model container [2023-08-25 07:52:33,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:52:33" (3/3) ... [2023-08-25 07:52:33,841 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2023-08-25 07:52:33,856 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 07:52:33,857 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-25 07:52:33,857 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 07:52:33,915 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 07:52:33,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 166 flow [2023-08-25 07:52:33,988 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-08-25 07:52:33,988 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:52:33,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 6/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-25 07:52:33,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 78 transitions, 166 flow [2023-08-25 07:52:34,002 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 76 transitions, 158 flow [2023-08-25 07:52:34,005 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 07:52:34,012 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 76 transitions, 158 flow [2023-08-25 07:52:34,014 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 76 transitions, 158 flow [2023-08-25 07:52:34,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 158 flow [2023-08-25 07:52:34,031 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-08-25 07:52:34,031 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:52:34,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 6/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-25 07:52:34,034 INFO L119 LiptonReduction]: Number of co-enabled transitions 1792 [2023-08-25 07:52:36,079 INFO L134 LiptonReduction]: Checked pairs total: 2074 [2023-08-25 07:52:36,080 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-25 07:52:36,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 07:52:36,095 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;@3f96b1a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 07:52:36,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-25 07:52:36,098 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 07:52:36,098 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-25 07:52:36,098 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:52:36,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:36,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 07:52:36,099 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:36,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:36,103 INFO L85 PathProgramCache]: Analyzing trace with hash 10943499, now seen corresponding path program 1 times [2023-08-25 07:52:36,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:36,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524069665] [2023-08-25 07:52:36,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:36,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:36,242 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 07:52:36,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:36,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524069665] [2023-08-25 07:52:36,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524069665] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:52:36,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:52:36,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 07:52:36,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078313810] [2023-08-25 07:52:36,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:52:36,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 07:52:36,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:36,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 07:52:36,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 07:52:36,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 156 [2023-08-25 07:52:36,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 44 flow. Second operand has 2 states, 2 states have (on average 63.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:36,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:36,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 156 [2023-08-25 07:52:36,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:36,325 INFO L124 PetriNetUnfolderBase]: 70/113 cut-off events. [2023-08-25 07:52:36,326 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 07:52:36,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 113 events. 70/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 256 event pairs, 44 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 228. Up to 114 conditions per place. [2023-08-25 07:52:36,330 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 12 selfloop transitions, 0 changer transitions 1/13 dead transitions. [2023-08-25 07:52:36,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 58 flow [2023-08-25 07:52:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 07:52:36,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 07:52:36,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 141 transitions. [2023-08-25 07:52:36,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2023-08-25 07:52:36,345 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 141 transitions. [2023-08-25 07:52:36,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 141 transitions. [2023-08-25 07:52:36,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:36,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 141 transitions. [2023-08-25 07:52:36,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:36,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:36,358 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:36,360 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 44 flow. Second operand 2 states and 141 transitions. [2023-08-25 07:52:36,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 58 flow [2023-08-25 07:52:36,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:52:36,364 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 28 flow [2023-08-25 07:52:36,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=12} [2023-08-25 07:52:36,370 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -7 predicate places. [2023-08-25 07:52:36,370 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 28 flow [2023-08-25 07:52:36,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:36,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:36,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 07:52:36,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 07:52:36,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:36,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:36,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1927611490, now seen corresponding path program 1 times [2023-08-25 07:52:36,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:36,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487639471] [2023-08-25 07:52:36,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:36,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:36,581 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 07:52:36,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:36,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487639471] [2023-08-25 07:52:36,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487639471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:52:36,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:52:36,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:52:36,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603649097] [2023-08-25 07:52:36,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:52:36,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 07:52:36,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:36,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 07:52:36,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 07:52:36,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:52:36,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 28 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:36,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:36,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:52:36,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:36,657 INFO L124 PetriNetUnfolderBase]: 84/143 cut-off events. [2023-08-25 07:52:36,657 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:52:36,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 143 events. 84/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 393 event pairs, 15 based on Foata normal form. 15/119 useless extension candidates. Maximal degree in co-relation 298. Up to 86 conditions per place. [2023-08-25 07:52:36,659 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 23 selfloop transitions, 7 changer transitions 2/32 dead transitions. [2023-08-25 07:52:36,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 32 transitions, 134 flow [2023-08-25 07:52:36,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 07:52:36,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 07:52:36,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2023-08-25 07:52:36,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2023-08-25 07:52:36,667 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 314 transitions. [2023-08-25 07:52:36,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 314 transitions. [2023-08-25 07:52:36,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:36,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 314 transitions. [2023-08-25 07:52:36,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:36,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:36,671 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:36,671 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 28 flow. Second operand 5 states and 314 transitions. [2023-08-25 07:52:36,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 32 transitions, 134 flow [2023-08-25 07:52:36,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 32 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:52:36,672 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 75 flow [2023-08-25 07:52:36,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2023-08-25 07:52:36,673 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2023-08-25 07:52:36,673 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 75 flow [2023-08-25 07:52:36,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:36,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:36,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:52:36,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 07:52:36,674 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:36,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:36,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1337591207, now seen corresponding path program 1 times [2023-08-25 07:52:36,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:36,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152964266] [2023-08-25 07:52:36,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:36,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:36,786 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 07:52:36,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:36,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152964266] [2023-08-25 07:52:36,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152964266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:52:36,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:52:36,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:52:36,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131997875] [2023-08-25 07:52:36,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:52:36,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:52:36,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:36,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:52:36,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:52:36,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:52:36,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:36,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:36,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:52:36,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:36,855 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-08-25 07:52:36,855 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-25 07:52:36,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 157 events. 92/157 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 438 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 448. Up to 61 conditions per place. [2023-08-25 07:52:36,856 INFO L140 encePairwiseOnDemand]: 152/156 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-08-25 07:52:36,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 30 transitions, 173 flow [2023-08-25 07:52:36,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 07:52:36,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 07:52:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2023-08-25 07:52:36,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2023-08-25 07:52:36,861 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2023-08-25 07:52:36,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2023-08-25 07:52:36,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:36,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2023-08-25 07:52:36,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:36,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:36,867 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:36,867 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 75 flow. Second operand 4 states and 249 transitions. [2023-08-25 07:52:36,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 30 transitions, 173 flow [2023-08-25 07:52:36,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:52:36,871 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 119 flow [2023-08-25 07:52:36,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-08-25 07:52:36,872 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-08-25 07:52:36,872 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 119 flow [2023-08-25 07:52:36,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:36,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:36,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:52:36,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 07:52:36,877 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:36,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:36,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1303192770, now seen corresponding path program 1 times [2023-08-25 07:52:36,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:36,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088469748] [2023-08-25 07:52:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:36,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:37,034 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 07:52:37,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:37,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088469748] [2023-08-25 07:52:37,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088469748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:52:37,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:52:37,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:52:37,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133930303] [2023-08-25 07:52:37,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:52:37,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:52:37,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:37,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:52:37,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:52:37,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:52:37,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:37,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:52:37,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:37,143 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-08-25 07:52:37,143 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-08-25 07:52:37,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 229 events. 132/229 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 713 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 748. Up to 101 conditions per place. [2023-08-25 07:52:37,148 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-25 07:52:37,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 301 flow [2023-08-25 07:52:37,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:52:37,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:52:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 374 transitions. [2023-08-25 07:52:37,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3995726495726496 [2023-08-25 07:52:37,151 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 374 transitions. [2023-08-25 07:52:37,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 374 transitions. [2023-08-25 07:52:37,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:37,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 374 transitions. [2023-08-25 07:52:37,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 62.333333333333336) internal successors, (374), 6 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,154 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,154 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 119 flow. Second operand 6 states and 374 transitions. [2023-08-25 07:52:37,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 301 flow [2023-08-25 07:52:37,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 285 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-25 07:52:37,159 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 203 flow [2023-08-25 07:52:37,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-25 07:52:37,161 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2023-08-25 07:52:37,161 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 203 flow [2023-08-25 07:52:37,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:37,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:52:37,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 07:52:37,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:37,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:37,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1303209510, now seen corresponding path program 2 times [2023-08-25 07:52:37,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:37,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776786782] [2023-08-25 07:52:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:37,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:37,365 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 07:52:37,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:37,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776786782] [2023-08-25 07:52:37,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776786782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:52:37,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:52:37,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:52:37,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177803933] [2023-08-25 07:52:37,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:52:37,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:52:37,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:37,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:52:37,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:52:37,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:52:37,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:37,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:52:37,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:37,452 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-08-25 07:52:37,455 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2023-08-25 07:52:37,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 199 events. 114/199 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 611 event pairs, 23 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 761. Up to 84 conditions per place. [2023-08-25 07:52:37,457 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 29 selfloop transitions, 11 changer transitions 4/44 dead transitions. [2023-08-25 07:52:37,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 349 flow [2023-08-25 07:52:37,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 07:52:37,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 07:52:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2023-08-25 07:52:37,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012820512820513 [2023-08-25 07:52:37,459 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 313 transitions. [2023-08-25 07:52:37,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 313 transitions. [2023-08-25 07:52:37,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:37,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 313 transitions. [2023-08-25 07:52:37,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,463 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,463 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 203 flow. Second operand 5 states and 313 transitions. [2023-08-25 07:52:37,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 349 flow [2023-08-25 07:52:37,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 335 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-25 07:52:37,469 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 236 flow [2023-08-25 07:52:37,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2023-08-25 07:52:37,471 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 18 predicate places. [2023-08-25 07:52:37,471 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 236 flow [2023-08-25 07:52:37,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:37,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:52:37,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 07:52:37,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:37,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:37,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1194528409, now seen corresponding path program 1 times [2023-08-25 07:52:37,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:37,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158314838] [2023-08-25 07:52:37,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:37,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:37,570 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 07:52:37,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:37,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158314838] [2023-08-25 07:52:37,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158314838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:52:37,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:52:37,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:52:37,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729073248] [2023-08-25 07:52:37,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:52:37,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:52:37,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:37,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:52:37,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:52:37,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:52:37,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:37,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:52:37,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:37,674 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-08-25 07:52:37,674 INFO L125 PetriNetUnfolderBase]: For 1059/1059 co-relation queries the response was YES. [2023-08-25 07:52:37,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 263 events. 150/263 cut-off events. For 1059/1059 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 861 event pairs, 20 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 1078. Up to 73 conditions per place. [2023-08-25 07:52:37,676 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 35 selfloop transitions, 20 changer transitions 3/58 dead transitions. [2023-08-25 07:52:37,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 496 flow [2023-08-25 07:52:37,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 07:52:37,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 07:52:37,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 494 transitions. [2023-08-25 07:52:37,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2023-08-25 07:52:37,678 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 494 transitions. [2023-08-25 07:52:37,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 494 transitions. [2023-08-25 07:52:37,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:37,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 494 transitions. [2023-08-25 07:52:37,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 61.75) internal successors, (494), 8 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,682 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,682 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 236 flow. Second operand 8 states and 494 transitions. [2023-08-25 07:52:37,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 496 flow [2023-08-25 07:52:37,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 457 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-25 07:52:37,687 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 336 flow [2023-08-25 07:52:37,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=336, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-08-25 07:52:37,689 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2023-08-25 07:52:37,689 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 336 flow [2023-08-25 07:52:37,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:37,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:52:37,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 07:52:37,690 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:37,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:37,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1229400619, now seen corresponding path program 2 times [2023-08-25 07:52:37,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:37,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299656262] [2023-08-25 07:52:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:37,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:37,885 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 07:52:37,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:37,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299656262] [2023-08-25 07:52:37,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299656262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:52:37,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:52:37,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:52:37,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841796171] [2023-08-25 07:52:37,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:52:37,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:52:37,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:52:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:52:37,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:52:37,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:37,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:37,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:52:37,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:38,004 INFO L124 PetriNetUnfolderBase]: 138/243 cut-off events. [2023-08-25 07:52:38,004 INFO L125 PetriNetUnfolderBase]: For 1276/1276 co-relation queries the response was YES. [2023-08-25 07:52:38,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 243 events. 138/243 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 813 event pairs, 20 based on Foata normal form. 8/251 useless extension candidates. Maximal degree in co-relation 1130. Up to 69 conditions per place. [2023-08-25 07:52:38,006 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 27 selfloop transitions, 20 changer transitions 8/55 dead transitions. [2023-08-25 07:52:38,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 552 flow [2023-08-25 07:52:38,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 07:52:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 07:52:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 432 transitions. [2023-08-25 07:52:38,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956043956043956 [2023-08-25 07:52:38,009 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 432 transitions. [2023-08-25 07:52:38,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 432 transitions. [2023-08-25 07:52:38,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:38,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 432 transitions. [2023-08-25 07:52:38,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.714285714285715) internal successors, (432), 7 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:38,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:38,012 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:38,013 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 336 flow. Second operand 7 states and 432 transitions. [2023-08-25 07:52:38,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 55 transitions, 552 flow [2023-08-25 07:52:38,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 501 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-08-25 07:52:38,021 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 360 flow [2023-08-25 07:52:38,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2023-08-25 07:52:38,024 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 30 predicate places. [2023-08-25 07:52:38,024 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 360 flow [2023-08-25 07:52:38,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:38,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:38,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:52:38,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 07:52:38,026 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:38,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:38,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1194458659, now seen corresponding path program 3 times [2023-08-25 07:52:38,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:38,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768640282] [2023-08-25 07:52:38,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:38,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:38,215 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 07:52:38,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:38,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768640282] [2023-08-25 07:52:38,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768640282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:52:38,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:52:38,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:52:38,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690879628] [2023-08-25 07:52:38,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:52:38,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:52:38,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:38,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:52:38,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:52:38,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:52:38,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 360 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:38,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:38,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:52:38,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:38,364 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-08-25 07:52:38,365 INFO L125 PetriNetUnfolderBase]: For 1545/1545 co-relation queries the response was YES. [2023-08-25 07:52:38,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 263 events. 150/263 cut-off events. For 1545/1545 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 904 event pairs, 33 based on Foata normal form. 4/267 useless extension candidates. Maximal degree in co-relation 1257. Up to 130 conditions per place. [2023-08-25 07:52:38,367 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 38 selfloop transitions, 16 changer transitions 12/66 dead transitions. [2023-08-25 07:52:38,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 646 flow [2023-08-25 07:52:38,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 07:52:38,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 07:52:38,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 556 transitions. [2023-08-25 07:52:38,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396011396011396 [2023-08-25 07:52:38,369 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 556 transitions. [2023-08-25 07:52:38,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 556 transitions. [2023-08-25 07:52:38,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:38,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 556 transitions. [2023-08-25 07:52:38,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.77777777777778) internal successors, (556), 9 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:38,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 156.0) internal successors, (1560), 10 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:38,373 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 156.0) internal successors, (1560), 10 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:38,373 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 360 flow. Second operand 9 states and 556 transitions. [2023-08-25 07:52:38,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 646 flow [2023-08-25 07:52:38,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 66 transitions, 596 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-25 07:52:38,380 INFO L231 Difference]: Finished difference. Result has 59 places, 39 transitions, 401 flow [2023-08-25 07:52:38,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=401, PETRI_PLACES=59, PETRI_TRANSITIONS=39} [2023-08-25 07:52:38,381 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-08-25 07:52:38,382 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 39 transitions, 401 flow [2023-08-25 07:52:38,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:38,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:38,383 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:52:38,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 07:52:38,383 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:38,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:38,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1623786141, now seen corresponding path program 4 times [2023-08-25 07:52:38,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:38,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087927709] [2023-08-25 07:52:38,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:38,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:52:38,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:38,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087927709] [2023-08-25 07:52:38,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087927709] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:52:38,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811905552] [2023-08-25 07:52:38,466 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 07:52:38,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:52:38,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:52:38,468 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 07:52:38,478 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 07:52:38,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 07:52:38,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:52:38,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-25 07:52:38,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:52:38,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:52:38,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:52:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:52:38,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811905552] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:52:38,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:52:38,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-25 07:52:38,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389521887] [2023-08-25 07:52:38,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:52:38,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 07:52:38,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:38,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 07:52:38,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-25 07:52:38,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:52:38,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 39 transitions, 401 flow. Second operand has 12 states, 12 states have (on average 57.916666666666664) internal successors, (695), 12 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:38,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:38,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:52:38,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:38,986 INFO L124 PetriNetUnfolderBase]: 198/343 cut-off events. [2023-08-25 07:52:38,986 INFO L125 PetriNetUnfolderBase]: For 2474/2474 co-relation queries the response was YES. [2023-08-25 07:52:38,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 343 events. 198/343 cut-off events. For 2474/2474 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1152 event pairs, 18 based on Foata normal form. 16/359 useless extension candidates. Maximal degree in co-relation 1727. Up to 91 conditions per place. [2023-08-25 07:52:38,988 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 34 selfloop transitions, 35 changer transitions 22/91 dead transitions. [2023-08-25 07:52:38,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 987 flow [2023-08-25 07:52:38,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 07:52:38,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 07:52:38,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 858 transitions. [2023-08-25 07:52:38,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2023-08-25 07:52:38,992 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 858 transitions. [2023-08-25 07:52:38,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 858 transitions. [2023-08-25 07:52:38,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:38,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 858 transitions. [2023-08-25 07:52:38,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 61.285714285714285) internal successors, (858), 14 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:38,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 156.0) internal successors, (2340), 15 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:38,998 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 156.0) internal successors, (2340), 15 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:38,999 INFO L175 Difference]: Start difference. First operand has 59 places, 39 transitions, 401 flow. Second operand 14 states and 858 transitions. [2023-08-25 07:52:38,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 987 flow [2023-08-25 07:52:39,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 950 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-25 07:52:39,007 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 723 flow [2023-08-25 07:52:39,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=723, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2023-08-25 07:52:39,009 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 48 predicate places. [2023-08-25 07:52:39,009 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 723 flow [2023-08-25 07:52:39,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 57.916666666666664) internal successors, (695), 12 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:39,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:39,011 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:52:39,018 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 07:52:39,215 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 07:52:39,215 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:39,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:39,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2076322240, now seen corresponding path program 5 times [2023-08-25 07:52:39,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:39,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314568473] [2023-08-25 07:52:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:39,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:52:39,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:39,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314568473] [2023-08-25 07:52:39,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314568473] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:52:39,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275384456] [2023-08-25 07:52:39,347 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 07:52:39,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:52:39,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:52:39,348 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 07:52:39,381 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 07:52:39,429 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 07:52:39,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:52:39,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 07:52:39,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:52:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:52:39,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:52:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:52:39,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275384456] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:52:39,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:52:39,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-25 07:52:39,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761412986] [2023-08-25 07:52:39,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:52:39,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 07:52:39,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:39,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 07:52:39,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-08-25 07:52:39,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:52:39,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 723 flow. Second operand has 16 states, 16 states have (on average 57.8125) internal successors, (925), 16 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:39,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:39,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:52:39,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:39,871 INFO L124 PetriNetUnfolderBase]: 254/455 cut-off events. [2023-08-25 07:52:39,871 INFO L125 PetriNetUnfolderBase]: For 5613/5613 co-relation queries the response was YES. [2023-08-25 07:52:39,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2627 conditions, 455 events. 254/455 cut-off events. For 5613/5613 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1590 event pairs, 55 based on Foata normal form. 32/487 useless extension candidates. Maximal degree in co-relation 2598. Up to 249 conditions per place. [2023-08-25 07:52:39,875 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 65 selfloop transitions, 25 changer transitions 27/117 dead transitions. [2023-08-25 07:52:39,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 117 transitions, 1537 flow [2023-08-25 07:52:39,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 07:52:39,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 07:52:39,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 979 transitions. [2023-08-25 07:52:39,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3922275641025641 [2023-08-25 07:52:39,878 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 979 transitions. [2023-08-25 07:52:39,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 979 transitions. [2023-08-25 07:52:39,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:39,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 979 transitions. [2023-08-25 07:52:39,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 61.1875) internal successors, (979), 16 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:39,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 156.0) internal successors, (2652), 17 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:39,885 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 156.0) internal successors, (2652), 17 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:39,885 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 723 flow. Second operand 16 states and 979 transitions. [2023-08-25 07:52:39,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 117 transitions, 1537 flow [2023-08-25 07:52:39,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 117 transitions, 1160 flow, removed 175 selfloop flow, removed 5 redundant places. [2023-08-25 07:52:39,901 INFO L231 Difference]: Finished difference. Result has 92 places, 69 transitions, 808 flow [2023-08-25 07:52:39,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=808, PETRI_PLACES=92, PETRI_TRANSITIONS=69} [2023-08-25 07:52:39,901 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2023-08-25 07:52:39,901 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 69 transitions, 808 flow [2023-08-25 07:52:39,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 57.8125) internal successors, (925), 16 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:39,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:39,902 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:52:39,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 07:52:40,106 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 07:52:40,107 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:40,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:40,107 INFO L85 PathProgramCache]: Analyzing trace with hash 291972828, now seen corresponding path program 6 times [2023-08-25 07:52:40,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:40,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102111305] [2023-08-25 07:52:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:40,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:52:40,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:40,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102111305] [2023-08-25 07:52:40,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102111305] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:52:40,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555373504] [2023-08-25 07:52:40,257 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 07:52:40,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:52:40,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:52:40,258 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 07:52:40,280 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 07:52:40,338 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 07:52:40,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:52:40,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 07:52:40,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:52:40,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:52:40,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:52:40,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:52:40,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555373504] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:52:40,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:52:40,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-25 07:52:40,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032418593] [2023-08-25 07:52:40,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:52:40,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 07:52:40,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:40,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 07:52:40,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-25 07:52:40,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:52:40,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 69 transitions, 808 flow. Second operand has 17 states, 17 states have (on average 57.76470588235294) internal successors, (982), 17 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:40,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:40,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:52:40,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:40,976 INFO L124 PetriNetUnfolderBase]: 408/747 cut-off events. [2023-08-25 07:52:40,977 INFO L125 PetriNetUnfolderBase]: For 15120/15120 co-relation queries the response was YES. [2023-08-25 07:52:40,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4329 conditions, 747 events. 408/747 cut-off events. For 15120/15120 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3272 event pairs, 44 based on Foata normal form. 32/779 useless extension candidates. Maximal degree in co-relation 4291. Up to 233 conditions per place. [2023-08-25 07:52:40,982 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 73 selfloop transitions, 71 changer transitions 37/181 dead transitions. [2023-08-25 07:52:40,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 181 transitions, 2194 flow [2023-08-25 07:52:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 07:52:40,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 07:52:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1346 transitions. [2023-08-25 07:52:40,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3921911421911422 [2023-08-25 07:52:40,987 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1346 transitions. [2023-08-25 07:52:40,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1346 transitions. [2023-08-25 07:52:40,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:40,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1346 transitions. [2023-08-25 07:52:40,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 61.18181818181818) internal successors, (1346), 22 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:40,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 156.0) internal successors, (3588), 23 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:40,995 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 156.0) internal successors, (3588), 23 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:40,995 INFO L175 Difference]: Start difference. First operand has 92 places, 69 transitions, 808 flow. Second operand 22 states and 1346 transitions. [2023-08-25 07:52:40,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 181 transitions, 2194 flow [2023-08-25 07:52:41,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 181 transitions, 2082 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-08-25 07:52:41,050 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 1553 flow [2023-08-25 07:52:41,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1553, PETRI_PLACES=123, PETRI_TRANSITIONS=107} [2023-08-25 07:52:41,050 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 99 predicate places. [2023-08-25 07:52:41,050 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 1553 flow [2023-08-25 07:52:41,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 57.76470588235294) internal successors, (982), 17 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:41,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:41,051 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:52:41,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 07:52:41,257 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 07:52:41,258 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:41,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:41,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1663879424, now seen corresponding path program 7 times [2023-08-25 07:52:41,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:41,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885125622] [2023-08-25 07:52:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:41,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:41,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:52:41,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:41,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885125622] [2023-08-25 07:52:41,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885125622] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:52:41,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799467960] [2023-08-25 07:52:41,382 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 07:52:41,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:52:41,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:52:41,384 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 07:52:41,386 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 07:52:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:41,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 07:52:41,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:52:41,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:52:41,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:52:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:52:41,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799467960] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:52:41,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:52:41,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-25 07:52:41,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441322716] [2023-08-25 07:52:41,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:52:41,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 07:52:41,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:41,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 07:52:41,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-25 07:52:41,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:52:41,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 107 transitions, 1553 flow. Second operand has 16 states, 16 states have (on average 57.8125) internal successors, (925), 16 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:41,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:41,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:52:41,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:42,201 INFO L124 PetriNetUnfolderBase]: 632/1131 cut-off events. [2023-08-25 07:52:42,201 INFO L125 PetriNetUnfolderBase]: For 41223/41223 co-relation queries the response was YES. [2023-08-25 07:52:42,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8448 conditions, 1131 events. 632/1131 cut-off events. For 41223/41223 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5364 event pairs, 27 based on Foata normal form. 32/1163 useless extension candidates. Maximal degree in co-relation 8395. Up to 369 conditions per place. [2023-08-25 07:52:42,211 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 71 selfloop transitions, 133 changer transitions 46/250 dead transitions. [2023-08-25 07:52:42,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 250 transitions, 3947 flow [2023-08-25 07:52:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 07:52:42,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 07:52:42,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1591 transitions. [2023-08-25 07:52:42,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.392258382642998 [2023-08-25 07:52:42,215 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1591 transitions. [2023-08-25 07:52:42,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1591 transitions. [2023-08-25 07:52:42,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:42,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1591 transitions. [2023-08-25 07:52:42,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 61.19230769230769) internal successors, (1591), 26 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:42,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 156.0) internal successors, (4212), 27 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:42,224 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 156.0) internal successors, (4212), 27 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:42,224 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 1553 flow. Second operand 26 states and 1591 transitions. [2023-08-25 07:52:42,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 250 transitions, 3947 flow [2023-08-25 07:52:42,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 250 transitions, 3577 flow, removed 173 selfloop flow, removed 6 redundant places. [2023-08-25 07:52:42,313 INFO L231 Difference]: Finished difference. Result has 156 places, 161 transitions, 2715 flow [2023-08-25 07:52:42,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2715, PETRI_PLACES=156, PETRI_TRANSITIONS=161} [2023-08-25 07:52:42,314 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 132 predicate places. [2023-08-25 07:52:42,314 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 161 transitions, 2715 flow [2023-08-25 07:52:42,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 57.8125) internal successors, (925), 16 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:42,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:42,315 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:52:42,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 07:52:42,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:52:42,525 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:42,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:42,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1789443084, now seen corresponding path program 8 times [2023-08-25 07:52:42,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:42,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668758525] [2023-08-25 07:52:42,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:42,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:52:42,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:42,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668758525] [2023-08-25 07:52:42,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668758525] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:52:42,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977106611] [2023-08-25 07:52:42,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:52:42,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:52:42,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:52:42,703 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:52:42,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 07:52:42,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:52:42,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:52:42,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-25 07:52:42,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:52:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:52:42,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:52:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:52:43,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977106611] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:52:43,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:52:43,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-08-25 07:52:43,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672463271] [2023-08-25 07:52:43,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:52:43,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 07:52:43,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:43,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 07:52:43,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-08-25 07:52:43,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:52:43,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 161 transitions, 2715 flow. Second operand has 19 states, 19 states have (on average 57.68421052631579) internal successors, (1096), 19 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:43,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:43,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:52:43,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:43,523 INFO L124 PetriNetUnfolderBase]: 748/1351 cut-off events. [2023-08-25 07:52:43,523 INFO L125 PetriNetUnfolderBase]: For 73974/73974 co-relation queries the response was YES. [2023-08-25 07:52:43,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12192 conditions, 1351 events. 748/1351 cut-off events. For 73974/73974 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6904 event pairs, 84 based on Foata normal form. 16/1367 useless extension candidates. Maximal degree in co-relation 12124. Up to 442 conditions per place. [2023-08-25 07:52:43,537 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 92 selfloop transitions, 127 changer transitions 33/252 dead transitions. [2023-08-25 07:52:43,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 252 transitions, 5089 flow [2023-08-25 07:52:43,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-25 07:52:43,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-25 07:52:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1157 transitions. [2023-08-25 07:52:43,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39035087719298245 [2023-08-25 07:52:43,541 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1157 transitions. [2023-08-25 07:52:43,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1157 transitions. [2023-08-25 07:52:43,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:43,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1157 transitions. [2023-08-25 07:52:43,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 60.89473684210526) internal successors, (1157), 19 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:43,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 156.0) internal successors, (3120), 20 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:43,552 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 156.0) internal successors, (3120), 20 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:43,552 INFO L175 Difference]: Start difference. First operand has 156 places, 161 transitions, 2715 flow. Second operand 19 states and 1157 transitions. [2023-08-25 07:52:43,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 252 transitions, 5089 flow [2023-08-25 07:52:43,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 252 transitions, 3872 flow, removed 587 selfloop flow, removed 9 redundant places. [2023-08-25 07:52:43,735 INFO L231 Difference]: Finished difference. Result has 175 places, 197 transitions, 3176 flow [2023-08-25 07:52:43,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3176, PETRI_PLACES=175, PETRI_TRANSITIONS=197} [2023-08-25 07:52:43,736 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 151 predicate places. [2023-08-25 07:52:43,736 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 197 transitions, 3176 flow [2023-08-25 07:52:43,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 57.68421052631579) internal successors, (1096), 19 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:43,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:43,737 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:52:43,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 07:52:43,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-25 07:52:43,942 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:43,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:43,942 INFO L85 PathProgramCache]: Analyzing trace with hash -827872136, now seen corresponding path program 9 times [2023-08-25 07:52:43,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:43,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785326238] [2023-08-25 07:52:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:43,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 07:52:44,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:44,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785326238] [2023-08-25 07:52:44,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785326238] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:52:44,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272080646] [2023-08-25 07:52:44,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 07:52:44,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:52:44,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:52:44,097 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:52:44,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 07:52:44,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 07:52:44,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:52:44,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 07:52:44,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:52:44,231 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 07:52:44,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:52:44,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 07:52:44,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272080646] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:52:44,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:52:44,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-25 07:52:44,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518901011] [2023-08-25 07:52:44,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:52:44,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 07:52:44,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:44,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 07:52:44,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-08-25 07:52:44,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:52:44,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 197 transitions, 3176 flow. Second operand has 20 states, 20 states have (on average 57.75) internal successors, (1155), 20 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:44,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:44,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:52:44,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:45,034 INFO L124 PetriNetUnfolderBase]: 888/1587 cut-off events. [2023-08-25 07:52:45,035 INFO L125 PetriNetUnfolderBase]: For 73763/73763 co-relation queries the response was YES. [2023-08-25 07:52:45,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13236 conditions, 1587 events. 888/1587 cut-off events. For 73763/73763 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8276 event pairs, 32 based on Foata normal form. 12/1599 useless extension candidates. Maximal degree in co-relation 13158. Up to 538 conditions per place. [2023-08-25 07:52:45,051 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 76 selfloop transitions, 184 changer transitions 38/298 dead transitions. [2023-08-25 07:52:45,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 298 transitions, 5204 flow [2023-08-25 07:52:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 07:52:45,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 07:52:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1345 transitions. [2023-08-25 07:52:45,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918997668997669 [2023-08-25 07:52:45,054 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1345 transitions. [2023-08-25 07:52:45,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1345 transitions. [2023-08-25 07:52:45,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:45,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1345 transitions. [2023-08-25 07:52:45,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 61.13636363636363) internal successors, (1345), 22 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:45,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 156.0) internal successors, (3588), 23 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:45,063 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 156.0) internal successors, (3588), 23 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:45,063 INFO L175 Difference]: Start difference. First operand has 175 places, 197 transitions, 3176 flow. Second operand 22 states and 1345 transitions. [2023-08-25 07:52:45,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 298 transitions, 5204 flow [2023-08-25 07:52:45,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 298 transitions, 4887 flow, removed 132 selfloop flow, removed 6 redundant places. [2023-08-25 07:52:45,329 INFO L231 Difference]: Finished difference. Result has 196 places, 232 transitions, 4035 flow [2023-08-25 07:52:45,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=2899, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4035, PETRI_PLACES=196, PETRI_TRANSITIONS=232} [2023-08-25 07:52:45,330 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 172 predicate places. [2023-08-25 07:52:45,330 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 232 transitions, 4035 flow [2023-08-25 07:52:45,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 57.75) internal successors, (1155), 20 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:45,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:45,331 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:52:45,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-25 07:52:45,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:52:45,537 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:45,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:45,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1463096343, now seen corresponding path program 10 times [2023-08-25 07:52:45,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:45,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711748749] [2023-08-25 07:52:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:45,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:52:45,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:45,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711748749] [2023-08-25 07:52:45,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711748749] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:52:45,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754576021] [2023-08-25 07:52:45,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 07:52:45,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:52:45,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:52:45,787 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:52:45,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 07:52:45,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 07:52:45,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:52:45,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-25 07:52:45,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:52:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:52:45,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:52:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:52:46,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754576021] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:52:46,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:52:46,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 13 [2023-08-25 07:52:46,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466472515] [2023-08-25 07:52:46,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:52:46,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 07:52:46,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:46,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 07:52:46,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-08-25 07:52:46,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:52:46,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 232 transitions, 4035 flow. Second operand has 15 states, 15 states have (on average 57.333333333333336) internal successors, (860), 15 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:46,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:46,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:52:46,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:46,795 INFO L124 PetriNetUnfolderBase]: 924/1659 cut-off events. [2023-08-25 07:52:46,795 INFO L125 PetriNetUnfolderBase]: For 82115/82115 co-relation queries the response was YES. [2023-08-25 07:52:46,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14698 conditions, 1659 events. 924/1659 cut-off events. For 82115/82115 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8746 event pairs, 28 based on Foata normal form. 8/1667 useless extension candidates. Maximal degree in co-relation 14613. Up to 558 conditions per place. [2023-08-25 07:52:46,813 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 71 selfloop transitions, 202 changer transitions 43/316 dead transitions. [2023-08-25 07:52:46,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 316 transitions, 5961 flow [2023-08-25 07:52:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-25 07:52:46,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-25 07:52:46,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1524 transitions. [2023-08-25 07:52:46,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39076923076923076 [2023-08-25 07:52:46,815 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1524 transitions. [2023-08-25 07:52:46,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1524 transitions. [2023-08-25 07:52:46,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:46,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1524 transitions. [2023-08-25 07:52:46,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 60.96) internal successors, (1524), 25 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:46,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 156.0) internal successors, (4056), 26 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:46,823 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 156.0) internal successors, (4056), 26 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:46,823 INFO L175 Difference]: Start difference. First operand has 196 places, 232 transitions, 4035 flow. Second operand 25 states and 1524 transitions. [2023-08-25 07:52:46,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 316 transitions, 5961 flow [2023-08-25 07:52:47,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 316 transitions, 5509 flow, removed 139 selfloop flow, removed 13 redundant places. [2023-08-25 07:52:47,040 INFO L231 Difference]: Finished difference. Result has 210 places, 242 transitions, 4336 flow [2023-08-25 07:52:47,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=3607, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4336, PETRI_PLACES=210, PETRI_TRANSITIONS=242} [2023-08-25 07:52:47,041 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 186 predicate places. [2023-08-25 07:52:47,041 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 242 transitions, 4336 flow [2023-08-25 07:52:47,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 57.333333333333336) internal successors, (860), 15 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:47,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:47,041 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:52:47,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 07:52:47,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:52:47,242 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:47,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:47,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1463718513, now seen corresponding path program 11 times [2023-08-25 07:52:47,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:47,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499139851] [2023-08-25 07:52:47,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:47,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:47,397 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:52:47,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:47,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499139851] [2023-08-25 07:52:47,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499139851] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:52:47,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325454857] [2023-08-25 07:52:47,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 07:52:47,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:52:47,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:52:47,399 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:52:47,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 07:52:47,475 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-25 07:52:47,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:52:47,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-25 07:52:47,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:52:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:52:47,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:52:47,592 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:52:47,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325454857] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:52:47,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:52:47,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 13 [2023-08-25 07:52:47,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945673779] [2023-08-25 07:52:47,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:52:47,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 07:52:47,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:47,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 07:52:47,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-08-25 07:52:47,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:52:47,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 242 transitions, 4336 flow. Second operand has 15 states, 15 states have (on average 57.333333333333336) internal successors, (860), 15 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:47,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:47,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:52:47,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:48,281 INFO L124 PetriNetUnfolderBase]: 960/1723 cut-off events. [2023-08-25 07:52:48,281 INFO L125 PetriNetUnfolderBase]: For 94895/94895 co-relation queries the response was YES. [2023-08-25 07:52:48,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15851 conditions, 1723 events. 960/1723 cut-off events. For 94895/94895 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9115 event pairs, 25 based on Foata normal form. 8/1731 useless extension candidates. Maximal degree in co-relation 15763. Up to 586 conditions per place. [2023-08-25 07:52:48,299 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 69 selfloop transitions, 213 changer transitions 44/326 dead transitions. [2023-08-25 07:52:48,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 326 transitions, 6340 flow [2023-08-25 07:52:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-25 07:52:48,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-25 07:52:48,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1525 transitions. [2023-08-25 07:52:48,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391025641025641 [2023-08-25 07:52:48,302 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1525 transitions. [2023-08-25 07:52:48,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1525 transitions. [2023-08-25 07:52:48,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:48,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1525 transitions. [2023-08-25 07:52:48,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 61.0) internal successors, (1525), 25 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:48,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 156.0) internal successors, (4056), 26 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:48,309 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 156.0) internal successors, (4056), 26 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:48,309 INFO L175 Difference]: Start difference. First operand has 210 places, 242 transitions, 4336 flow. Second operand 25 states and 1525 transitions. [2023-08-25 07:52:48,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 326 transitions, 6340 flow [2023-08-25 07:52:48,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 326 transitions, 5728 flow, removed 120 selfloop flow, removed 21 redundant places. [2023-08-25 07:52:48,541 INFO L231 Difference]: Finished difference. Result has 216 places, 251 transitions, 4526 flow [2023-08-25 07:52:48,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=3778, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4526, PETRI_PLACES=216, PETRI_TRANSITIONS=251} [2023-08-25 07:52:48,541 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 192 predicate places. [2023-08-25 07:52:48,541 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 251 transitions, 4526 flow [2023-08-25 07:52:48,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 57.333333333333336) internal successors, (860), 15 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:48,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:52:48,542 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:52:48,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-25 07:52:48,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 07:52:48,743 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:52:48,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:52:48,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1869346449, now seen corresponding path program 12 times [2023-08-25 07:52:48,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:52:48,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053453561] [2023-08-25 07:52:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:52:48,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:52:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:52:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:52:48,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:52:48,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053453561] [2023-08-25 07:52:48,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053453561] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:52:48,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611651696] [2023-08-25 07:52:48,810 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 07:52:48,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:52:48,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:52:48,811 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:52:48,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 07:52:48,900 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-08-25 07:52:48,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:52:48,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 07:52:48,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:52:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:52:48,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 07:52:48,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611651696] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:52:48,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 07:52:48,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-08-25 07:52:48,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360026008] [2023-08-25 07:52:48,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:52:48,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 07:52:48,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:52:48,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 07:52:48,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-25 07:52:48,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 156 [2023-08-25 07:52:48,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 251 transitions, 4526 flow. Second operand has 8 states, 8 states have (on average 57.375) internal successors, (459), 8 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:48,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:52:48,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 156 [2023-08-25 07:52:48,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:52:49,493 INFO L124 PetriNetUnfolderBase]: 1914/3224 cut-off events. [2023-08-25 07:52:49,493 INFO L125 PetriNetUnfolderBase]: For 169790/169790 co-relation queries the response was YES. [2023-08-25 07:52:49,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24856 conditions, 3224 events. 1914/3224 cut-off events. For 169790/169790 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 18942 event pairs, 67 based on Foata normal form. 334/3558 useless extension candidates. Maximal degree in co-relation 24765. Up to 1409 conditions per place. [2023-08-25 07:52:49,517 INFO L140 encePairwiseOnDemand]: 153/156 looper letters, 0 selfloop transitions, 0 changer transitions 750/750 dead transitions. [2023-08-25 07:52:49,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 750 transitions, 14228 flow [2023-08-25 07:52:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 07:52:49,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 07:52:49,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 497 transitions. [2023-08-25 07:52:49,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39823717948717946 [2023-08-25 07:52:49,519 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 497 transitions. [2023-08-25 07:52:49,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 497 transitions. [2023-08-25 07:52:49,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:52:49,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 497 transitions. [2023-08-25 07:52:49,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:49,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:49,522 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:49,522 INFO L175 Difference]: Start difference. First operand has 216 places, 251 transitions, 4526 flow. Second operand 8 states and 497 transitions. [2023-08-25 07:52:49,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 750 transitions, 14228 flow [2023-08-25 07:52:49,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 750 transitions, 12330 flow, removed 109 selfloop flow, removed 33 redundant places. [2023-08-25 07:52:49,874 INFO L231 Difference]: Finished difference. Result has 188 places, 0 transitions, 0 flow [2023-08-25 07:52:49,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=3301, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=188, PETRI_TRANSITIONS=0} [2023-08-25 07:52:49,874 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 164 predicate places. [2023-08-25 07:52:49,874 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 0 transitions, 0 flow [2023-08-25 07:52:49,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 57.375) internal successors, (459), 8 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:52:49,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 13 remaining) [2023-08-25 07:52:49,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-08-25 07:52:49,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (10 of 13 remaining) [2023-08-25 07:52:49,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 13 remaining) [2023-08-25 07:52:49,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2023-08-25 07:52:49,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-08-25 07:52:49,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-08-25 07:52:49,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-08-25 07:52:49,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-08-25 07:52:49,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-08-25 07:52:49,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-08-25 07:52:49,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-08-25 07:52:49,878 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-08-25 07:52:49,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-25 07:52:50,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-25 07:52:50,083 INFO L445 BasicCegarLoop]: Path program histogram: [12, 2, 1, 1, 1] [2023-08-25 07:52:50,087 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 07:52:50,087 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 07:52:50,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 07:52:50 BasicIcfg [2023-08-25 07:52:50,090 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 07:52:50,090 INFO L158 Benchmark]: Toolchain (without parser) took 17151.59ms. Allocated memory was 388.0MB in the beginning and 752.9MB in the end (delta: 364.9MB). Free memory was 362.4MB in the beginning and 625.9MB in the end (delta: -263.6MB). Peak memory consumption was 395.7MB. Max. memory is 16.0GB. [2023-08-25 07:52:50,091 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 388.0MB. Free memory was 365.1MB in the beginning and 364.9MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 07:52:50,091 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.78ms. Allocated memory is still 388.0MB. Free memory was 362.4MB in the beginning and 342.8MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 07:52:50,091 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.21ms. Allocated memory is still 388.0MB. Free memory was 342.8MB in the beginning and 340.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 07:52:50,091 INFO L158 Benchmark]: Boogie Preprocessor took 20.09ms. Allocated memory is still 388.0MB. Free memory was 340.7MB in the beginning and 339.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 07:52:50,091 INFO L158 Benchmark]: RCFGBuilder took 432.86ms. Allocated memory is still 388.0MB. Free memory was 339.3MB in the beginning and 322.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-25 07:52:50,092 INFO L158 Benchmark]: TraceAbstraction took 16257.00ms. Allocated memory was 388.0MB in the beginning and 752.9MB in the end (delta: 364.9MB). Free memory was 321.8MB in the beginning and 625.9MB in the end (delta: -304.2MB). Peak memory consumption was 355.9MB. Max. memory is 16.0GB. [2023-08-25 07:52:50,093 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 388.0MB. Free memory was 365.1MB in the beginning and 364.9MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 403.78ms. Allocated memory is still 388.0MB. Free memory was 362.4MB in the beginning and 342.8MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.21ms. Allocated memory is still 388.0MB. Free memory was 342.8MB in the beginning and 340.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.09ms. Allocated memory is still 388.0MB. Free memory was 340.7MB in the beginning and 339.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 432.86ms. Allocated memory is still 388.0MB. Free memory was 339.3MB in the beginning and 322.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 16257.00ms. Allocated memory was 388.0MB in the beginning and 752.9MB in the end (delta: 364.9MB). Free memory was 321.8MB in the beginning and 625.9MB in the end (delta: -304.2MB). Peak memory consumption was 355.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 77 PlacesBefore, 24 PlacesAfterwards, 76 TransitionsBefore, 19 TransitionsAfterwards, 1792 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 78 TotalNumberOfCompositions, 2074 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1641, independent: 1592, independent conditional: 0, independent unconditional: 1592, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 973, independent: 953, independent conditional: 0, independent unconditional: 953, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1641, independent: 639, independent conditional: 0, independent unconditional: 639, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 973, unknown conditional: 0, unknown unconditional: 973] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 716]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 719]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 693]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 698]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 698]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 706]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 706]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 101 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.1s, OverallIterations: 17, TraceHistogramMax: 6, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1655 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1655 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 168 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2068 IncrementalHoareTripleChecker+Invalid, 2236 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 168 mSolverCounterUnsat, 0 mSDtfsCounter, 2068 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 503 GetRequests, 180 SyntacticMatches, 26 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2015 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4526occurred in iteration=16, InterpolantAutomatonStates: 223, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 348 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 437 ConstructedInterpolants, 0 QuantifiedInterpolants, 1775 SizeOfPredicates, 54 NumberOfNonLiveVariables, 1509 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 34 InterpolantComputations, 9 PerfectInterpolantSequences, 63/332 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-25 07:52:50,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...