/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 18:20:37,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 18:20:37,986 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 [2023-08-24 18:20:37,990 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 18:20:37,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 18:20:38,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 18:20:38,018 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 18:20:38,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 18:20:38,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 18:20:38,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 18:20:38,019 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 18:20:38,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 18:20:38,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 18:20:38,020 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 18:20:38,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 18:20:38,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 18:20:38,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 18:20:38,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 18:20:38,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 18:20:38,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 18:20:38,025 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 18:20:38,025 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 18:20:38,025 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 18:20:38,026 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 18:20:38,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 18:20:38,026 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 18:20:38,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 18:20:38,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:20:38,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 18:20:38,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 18:20:38,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 18:20:38,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 18:20:38,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 18:20:38,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 18:20:38,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 18:20:38,029 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-24 18:20:38,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 18:20:38,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 18:20:38,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 18:20:38,316 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 18:20:38,316 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 18:20:38,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-08-24 18:20:39,614 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 18:20:39,866 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 18:20:39,866 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-08-24 18:20:39,884 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19609fe4e/3881f56a48454b7ab7fe0d51125dfc1a/FLAG6d2302bc3 [2023-08-24 18:20:39,899 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19609fe4e/3881f56a48454b7ab7fe0d51125dfc1a [2023-08-24 18:20:39,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 18:20:39,906 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 18:20:39,908 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 18:20:39,908 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 18:20:39,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 18:20:39,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:20:39" (1/1) ... [2023-08-24 18:20:39,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fa3a516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:39, skipping insertion in model container [2023-08-24 18:20:39,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:20:39" (1/1) ... [2023-08-24 18:20:39,944 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 18:20:40,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:20:40,194 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 18:20:40,225 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-24 18:20:40,226 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-24 18:20:40,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:20:40,291 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 18:20:40,292 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 18:20:40,297 INFO L206 MainTranslator]: Completed translation [2023-08-24 18:20:40,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:40 WrapperNode [2023-08-24 18:20:40,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 18:20:40,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 18:20:40,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 18:20:40,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 18:20:40,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:40" (1/1) ... [2023-08-24 18:20:40,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:40" (1/1) ... [2023-08-24 18:20:40,353 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2023-08-24 18:20:40,354 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 18:20:40,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 18:20:40,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 18:20:40,355 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 18:20:40,362 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:40" (1/1) ... [2023-08-24 18:20:40,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:40" (1/1) ... [2023-08-24 18:20:40,369 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:40" (1/1) ... [2023-08-24 18:20:40,369 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:40" (1/1) ... [2023-08-24 18:20:40,383 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:40" (1/1) ... [2023-08-24 18:20:40,385 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:40" (1/1) ... [2023-08-24 18:20:40,387 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:40" (1/1) ... [2023-08-24 18:20:40,388 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:40" (1/1) ... [2023-08-24 18:20:40,389 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 18:20:40,390 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 18:20:40,390 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 18:20:40,390 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 18:20:40,391 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:40" (1/1) ... [2023-08-24 18:20:40,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:20:40,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:40,429 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) [2023-08-24 18:20:40,452 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 [2023-08-24 18:20:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-24 18:20:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-24 18:20:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-24 18:20:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-24 18:20:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 18:20:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 18:20:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 18:20:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 18:20:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 18:20:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 18:20:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 18:20:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 18:20:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 18:20:40,469 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 18:20:40,575 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 18:20:40,577 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 18:20:40,798 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 18:20:40,840 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 18:20:40,840 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 18:20:40,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:20:40 BoogieIcfgContainer [2023-08-24 18:20:40,842 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 18:20:40,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 18:20:40,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 18:20:40,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 18:20:40,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:20:39" (1/3) ... [2023-08-24 18:20:40,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a824122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:20:40, skipping insertion in model container [2023-08-24 18:20:40,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:40" (2/3) ... [2023-08-24 18:20:40,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a824122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:20:40, skipping insertion in model container [2023-08-24 18:20:40,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:20:40" (3/3) ... [2023-08-24 18:20:40,854 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2023-08-24 18:20:40,868 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 18:20:40,869 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-24 18:20:40,869 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 18:20:40,940 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:20:40,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 166 flow [2023-08-24 18:20:41,021 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-08-24 18:20:41,021 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:20:41,025 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. [2023-08-24 18:20:41,025 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 78 transitions, 166 flow [2023-08-24 18:20:41,029 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 76 transitions, 158 flow [2023-08-24 18:20:41,032 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:20:41,040 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 76 transitions, 158 flow [2023-08-24 18:20:41,042 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 76 transitions, 158 flow [2023-08-24 18:20:41,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 158 flow [2023-08-24 18:20:41,058 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-08-24 18:20:41,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:20:41,060 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. [2023-08-24 18:20:41,061 INFO L119 LiptonReduction]: Number of co-enabled transitions 1792 [2023-08-24 18:20:43,185 INFO L134 LiptonReduction]: Checked pairs total: 2074 [2023-08-24 18:20:43,185 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-24 18:20:43,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:20:43,202 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;@30f7c025, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:20:43,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-24 18:20:43,205 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:20:43,206 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-24 18:20:43,206 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:20:43,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:43,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:20:43,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:43,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:43,211 INFO L85 PathProgramCache]: Analyzing trace with hash 10943499, now seen corresponding path program 1 times [2023-08-24 18:20:43,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:43,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20739692] [2023-08-24 18:20:43,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:43,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:43,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:43,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20739692] [2023-08-24 18:20:43,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20739692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:43,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:43,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:20:43,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158994387] [2023-08-24 18:20:43,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:43,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:20:43,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:43,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:20:43,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:20:43,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 156 [2023-08-24 18:20:43,423 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) [2023-08-24 18:20:43,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:43,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 156 [2023-08-24 18:20:43,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:43,456 INFO L124 PetriNetUnfolderBase]: 70/113 cut-off events. [2023-08-24 18:20:43,456 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:20:43,457 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. [2023-08-24 18:20:43,458 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 12 selfloop transitions, 0 changer transitions 1/13 dead transitions. [2023-08-24 18:20:43,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 58 flow [2023-08-24 18:20:43,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:20:43,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:20:43,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 141 transitions. [2023-08-24 18:20:43,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2023-08-24 18:20:43,475 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 141 transitions. [2023-08-24 18:20:43,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 141 transitions. [2023-08-24 18:20:43,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:43,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 141 transitions. [2023-08-24 18:20:43,484 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) [2023-08-24 18:20:43,488 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) [2023-08-24 18:20:43,489 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) [2023-08-24 18:20:43,490 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 44 flow. Second operand 2 states and 141 transitions. [2023-08-24 18:20:43,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 58 flow [2023-08-24 18:20:43,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:20:43,494 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 28 flow [2023-08-24 18:20:43,495 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} [2023-08-24 18:20:43,500 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -7 predicate places. [2023-08-24 18:20:43,500 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 28 flow [2023-08-24 18:20:43,500 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) [2023-08-24 18:20:43,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:43,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 18:20:43,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 18:20:43,501 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:43,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:43,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1927611490, now seen corresponding path program 1 times [2023-08-24 18:20:43,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:43,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307551465] [2023-08-24 18:20:43,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:43,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:43,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:43,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307551465] [2023-08-24 18:20:43,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307551465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:43,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:43,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:20:43,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673113867] [2023-08-24 18:20:43,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:43,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 18:20:43,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:43,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 18:20:43,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 18:20:43,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:43,778 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) [2023-08-24 18:20:43,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:43,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:43,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:43,853 INFO L124 PetriNetUnfolderBase]: 84/143 cut-off events. [2023-08-24 18:20:43,854 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:20:43,854 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. [2023-08-24 18:20:43,855 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 23 selfloop transitions, 7 changer transitions 2/32 dead transitions. [2023-08-24 18:20:43,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 32 transitions, 134 flow [2023-08-24 18:20:43,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 18:20:43,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 18:20:43,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2023-08-24 18:20:43,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2023-08-24 18:20:43,864 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 314 transitions. [2023-08-24 18:20:43,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 314 transitions. [2023-08-24 18:20:43,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:43,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 314 transitions. [2023-08-24 18:20:43,865 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) [2023-08-24 18:20:43,867 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) [2023-08-24 18:20:43,868 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) [2023-08-24 18:20:43,868 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 28 flow. Second operand 5 states and 314 transitions. [2023-08-24 18:20:43,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 32 transitions, 134 flow [2023-08-24 18:20:43,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 32 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:20:43,870 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 75 flow [2023-08-24 18:20:43,872 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} [2023-08-24 18:20:43,873 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2023-08-24 18:20:43,873 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 75 flow [2023-08-24 18:20:43,874 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) [2023-08-24 18:20:43,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:43,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:43,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 18:20:43,874 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:43,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:43,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1337591207, now seen corresponding path program 1 times [2023-08-24 18:20:43,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:43,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900316677] [2023-08-24 18:20:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:43,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:44,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:44,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:44,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900316677] [2023-08-24 18:20:44,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900316677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:44,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:44,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 18:20:44,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059825385] [2023-08-24 18:20:44,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:44,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 18:20:44,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:44,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 18:20:44,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 18:20:44,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:44,017 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) [2023-08-24 18:20:44,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:44,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:44,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:44,085 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-08-24 18:20:44,086 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-24 18:20:44,086 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. [2023-08-24 18:20:44,087 INFO L140 encePairwiseOnDemand]: 152/156 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-08-24 18:20:44,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 30 transitions, 173 flow [2023-08-24 18:20:44,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 18:20:44,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 18:20:44,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2023-08-24 18:20:44,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2023-08-24 18:20:44,090 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2023-08-24 18:20:44,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2023-08-24 18:20:44,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:44,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2023-08-24 18:20:44,091 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) [2023-08-24 18:20:44,093 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) [2023-08-24 18:20:44,093 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) [2023-08-24 18:20:44,093 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 75 flow. Second operand 4 states and 249 transitions. [2023-08-24 18:20:44,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 30 transitions, 173 flow [2023-08-24 18:20:44,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:20:44,095 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 119 flow [2023-08-24 18:20:44,096 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} [2023-08-24 18:20:44,096 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-08-24 18:20:44,096 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 119 flow [2023-08-24 18:20:44,097 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) [2023-08-24 18:20:44,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:44,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:44,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 18:20:44,097 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:44,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:44,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1303192770, now seen corresponding path program 1 times [2023-08-24 18:20:44,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:44,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029805153] [2023-08-24 18:20:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:44,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:44,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:44,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029805153] [2023-08-24 18:20:44,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029805153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:44,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:44,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 18:20:44,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063317901] [2023-08-24 18:20:44,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:44,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 18:20:44,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:44,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 18:20:44,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 18:20:44,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:44,192 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) [2023-08-24 18:20:44,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:44,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:44,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:44,276 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-08-24 18:20:44,276 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-08-24 18:20:44,278 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. [2023-08-24 18:20:44,279 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-24 18:20:44,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 301 flow [2023-08-24 18:20:44,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 18:20:44,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 18:20:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 374 transitions. [2023-08-24 18:20:44,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3995726495726496 [2023-08-24 18:20:44,281 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 374 transitions. [2023-08-24 18:20:44,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 374 transitions. [2023-08-24 18:20:44,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:44,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 374 transitions. [2023-08-24 18:20:44,283 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) [2023-08-24 18:20:44,285 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) [2023-08-24 18:20:44,285 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) [2023-08-24 18:20:44,285 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 119 flow. Second operand 6 states and 374 transitions. [2023-08-24 18:20:44,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 301 flow [2023-08-24 18:20:44,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 285 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-24 18:20:44,289 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 203 flow [2023-08-24 18:20:44,289 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} [2023-08-24 18:20:44,289 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2023-08-24 18:20:44,290 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 203 flow [2023-08-24 18:20:44,290 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) [2023-08-24 18:20:44,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:44,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:44,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 18:20:44,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:44,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:44,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1303209510, now seen corresponding path program 2 times [2023-08-24 18:20:44,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:44,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866497759] [2023-08-24 18:20:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:44,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:44,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:44,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866497759] [2023-08-24 18:20:44,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866497759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:44,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:44,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 18:20:44,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037838160] [2023-08-24 18:20:44,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:44,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 18:20:44,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:44,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 18:20:44,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 18:20:44,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:44,430 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) [2023-08-24 18:20:44,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:44,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:44,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:44,507 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-08-24 18:20:44,507 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2023-08-24 18:20:44,508 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. [2023-08-24 18:20:44,509 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 29 selfloop transitions, 11 changer transitions 4/44 dead transitions. [2023-08-24 18:20:44,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 349 flow [2023-08-24 18:20:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 18:20:44,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 18:20:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2023-08-24 18:20:44,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012820512820513 [2023-08-24 18:20:44,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 313 transitions. [2023-08-24 18:20:44,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 313 transitions. [2023-08-24 18:20:44,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:44,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 313 transitions. [2023-08-24 18:20:44,513 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) [2023-08-24 18:20:44,515 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) [2023-08-24 18:20:44,515 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) [2023-08-24 18:20:44,515 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 203 flow. Second operand 5 states and 313 transitions. [2023-08-24 18:20:44,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 349 flow [2023-08-24 18:20:44,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 335 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-24 18:20:44,519 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 236 flow [2023-08-24 18:20:44,520 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} [2023-08-24 18:20:44,520 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 18 predicate places. [2023-08-24 18:20:44,520 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 236 flow [2023-08-24 18:20:44,521 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) [2023-08-24 18:20:44,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:44,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:44,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 18:20:44,521 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:44,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:44,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1194528409, now seen corresponding path program 1 times [2023-08-24 18:20:44,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:44,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157894164] [2023-08-24 18:20:44,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:44,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:44,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:44,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:44,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157894164] [2023-08-24 18:20:44,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157894164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:44,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:44,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 18:20:44,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424909876] [2023-08-24 18:20:44,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:44,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:20:44,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:44,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:20:44,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:20:44,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:44,659 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) [2023-08-24 18:20:44,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:44,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:44,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:44,758 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-08-24 18:20:44,759 INFO L125 PetriNetUnfolderBase]: For 1059/1059 co-relation queries the response was YES. [2023-08-24 18:20:44,759 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. [2023-08-24 18:20:44,761 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 35 selfloop transitions, 20 changer transitions 3/58 dead transitions. [2023-08-24 18:20:44,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 496 flow [2023-08-24 18:20:44,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 18:20:44,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 18:20:44,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 494 transitions. [2023-08-24 18:20:44,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2023-08-24 18:20:44,763 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 494 transitions. [2023-08-24 18:20:44,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 494 transitions. [2023-08-24 18:20:44,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:44,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 494 transitions. [2023-08-24 18:20:44,765 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) [2023-08-24 18:20:44,767 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) [2023-08-24 18:20:44,767 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) [2023-08-24 18:20:44,767 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 236 flow. Second operand 8 states and 494 transitions. [2023-08-24 18:20:44,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 496 flow [2023-08-24 18:20:44,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 457 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-24 18:20:44,772 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 336 flow [2023-08-24 18:20:44,773 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} [2023-08-24 18:20:44,775 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2023-08-24 18:20:44,777 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 336 flow [2023-08-24 18:20:44,778 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) [2023-08-24 18:20:44,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:44,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:44,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 18:20:44,778 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:44,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:44,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1229400619, now seen corresponding path program 2 times [2023-08-24 18:20:44,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:44,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333129364] [2023-08-24 18:20:44,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:44,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:45,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:45,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333129364] [2023-08-24 18:20:45,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333129364] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:45,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:45,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 18:20:45,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162287286] [2023-08-24 18:20:45,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:45,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:20:45,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:45,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:20:45,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:20:45,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:45,007 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) [2023-08-24 18:20:45,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:45,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:45,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:45,115 INFO L124 PetriNetUnfolderBase]: 138/243 cut-off events. [2023-08-24 18:20:45,115 INFO L125 PetriNetUnfolderBase]: For 1276/1276 co-relation queries the response was YES. [2023-08-24 18:20:45,117 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. [2023-08-24 18:20:45,118 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 27 selfloop transitions, 20 changer transitions 8/55 dead transitions. [2023-08-24 18:20:45,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 552 flow [2023-08-24 18:20:45,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 18:20:45,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 18:20:45,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 432 transitions. [2023-08-24 18:20:45,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956043956043956 [2023-08-24 18:20:45,120 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 432 transitions. [2023-08-24 18:20:45,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 432 transitions. [2023-08-24 18:20:45,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:45,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 432 transitions. [2023-08-24 18:20:45,123 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) [2023-08-24 18:20:45,125 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) [2023-08-24 18:20:45,125 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) [2023-08-24 18:20:45,125 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 336 flow. Second operand 7 states and 432 transitions. [2023-08-24 18:20:45,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 55 transitions, 552 flow [2023-08-24 18:20:45,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 501 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-08-24 18:20:45,132 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 360 flow [2023-08-24 18:20:45,133 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} [2023-08-24 18:20:45,133 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 30 predicate places. [2023-08-24 18:20:45,134 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 360 flow [2023-08-24 18:20:45,135 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) [2023-08-24 18:20:45,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:45,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:45,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 18:20:45,135 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:45,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1194458659, now seen corresponding path program 3 times [2023-08-24 18:20:45,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:45,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333794037] [2023-08-24 18:20:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:45,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:45,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:45,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333794037] [2023-08-24 18:20:45,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333794037] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:45,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:45,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 18:20:45,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469236153] [2023-08-24 18:20:45,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:45,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:20:45,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:20:45,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:20:45,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:45,347 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) [2023-08-24 18:20:45,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:45,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:45,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:45,514 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-08-24 18:20:45,514 INFO L125 PetriNetUnfolderBase]: For 1545/1545 co-relation queries the response was YES. [2023-08-24 18:20:45,515 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. [2023-08-24 18:20:45,516 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 38 selfloop transitions, 16 changer transitions 12/66 dead transitions. [2023-08-24 18:20:45,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 646 flow [2023-08-24 18:20:45,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 18:20:45,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 18:20:45,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 556 transitions. [2023-08-24 18:20:45,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396011396011396 [2023-08-24 18:20:45,519 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 556 transitions. [2023-08-24 18:20:45,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 556 transitions. [2023-08-24 18:20:45,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:45,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 556 transitions. [2023-08-24 18:20:45,520 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) [2023-08-24 18:20:45,522 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) [2023-08-24 18:20:45,523 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) [2023-08-24 18:20:45,523 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 360 flow. Second operand 9 states and 556 transitions. [2023-08-24 18:20:45,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 646 flow [2023-08-24 18:20:45,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 66 transitions, 596 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-24 18:20:45,530 INFO L231 Difference]: Finished difference. Result has 59 places, 39 transitions, 401 flow [2023-08-24 18:20:45,530 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} [2023-08-24 18:20:45,531 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-08-24 18:20:45,531 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 39 transitions, 401 flow [2023-08-24 18:20:45,531 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) [2023-08-24 18:20:45,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:45,531 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:45,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 18:20:45,532 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:45,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:45,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1623786141, now seen corresponding path program 4 times [2023-08-24 18:20:45,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:45,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438677500] [2023-08-24 18:20:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:45,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:45,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:45,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:45,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438677500] [2023-08-24 18:20:45,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438677500] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:45,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266914087] [2023-08-24 18:20:45,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 18:20:45,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:45,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:45,641 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) [2023-08-24 18:20:45,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 18:20:45,752 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 18:20:45,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:45,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 18:20:45,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:45,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:45,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266914087] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:45,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:45,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-24 18:20:45,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184937121] [2023-08-24 18:20:45,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:45,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 18:20:45,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:45,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 18:20:45,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-24 18:20:45,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:45,959 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) [2023-08-24 18:20:45,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:45,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:45,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:46,190 INFO L124 PetriNetUnfolderBase]: 198/343 cut-off events. [2023-08-24 18:20:46,190 INFO L125 PetriNetUnfolderBase]: For 2474/2474 co-relation queries the response was YES. [2023-08-24 18:20:46,192 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. [2023-08-24 18:20:46,193 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 34 selfloop transitions, 35 changer transitions 22/91 dead transitions. [2023-08-24 18:20:46,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 987 flow [2023-08-24 18:20:46,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 18:20:46,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 18:20:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 858 transitions. [2023-08-24 18:20:46,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2023-08-24 18:20:46,196 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 858 transitions. [2023-08-24 18:20:46,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 858 transitions. [2023-08-24 18:20:46,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:46,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 858 transitions. [2023-08-24 18:20:46,199 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) [2023-08-24 18:20:46,202 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) [2023-08-24 18:20:46,203 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) [2023-08-24 18:20:46,203 INFO L175 Difference]: Start difference. First operand has 59 places, 39 transitions, 401 flow. Second operand 14 states and 858 transitions. [2023-08-24 18:20:46,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 987 flow [2023-08-24 18:20:46,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 950 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-24 18:20:46,211 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 723 flow [2023-08-24 18:20:46,211 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} [2023-08-24 18:20:46,211 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 48 predicate places. [2023-08-24 18:20:46,212 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 723 flow [2023-08-24 18:20:46,212 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) [2023-08-24 18:20:46,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:46,212 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:46,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:46,418 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 [2023-08-24 18:20:46,418 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:46,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:46,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2076322240, now seen corresponding path program 5 times [2023-08-24 18:20:46,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:46,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863984787] [2023-08-24 18:20:46,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:46,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:20:46,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:46,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863984787] [2023-08-24 18:20:46,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863984787] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:46,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48720487] [2023-08-24 18:20:46,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 18:20:46,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:46,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:46,542 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) [2023-08-24 18:20:46,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 18:20:46,626 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-24 18:20:46,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:46,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 18:20:46,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:20:46,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:20:46,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48720487] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:46,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:46,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-24 18:20:46,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443771172] [2023-08-24 18:20:46,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:46,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 18:20:46,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:46,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 18:20:46,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-08-24 18:20:46,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:46,816 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) [2023-08-24 18:20:46,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:46,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:46,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:47,052 INFO L124 PetriNetUnfolderBase]: 254/455 cut-off events. [2023-08-24 18:20:47,052 INFO L125 PetriNetUnfolderBase]: For 5613/5613 co-relation queries the response was YES. [2023-08-24 18:20:47,054 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. [2023-08-24 18:20:47,056 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 65 selfloop transitions, 25 changer transitions 27/117 dead transitions. [2023-08-24 18:20:47,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 117 transitions, 1537 flow [2023-08-24 18:20:47,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 18:20:47,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 18:20:47,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 979 transitions. [2023-08-24 18:20:47,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3922275641025641 [2023-08-24 18:20:47,060 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 979 transitions. [2023-08-24 18:20:47,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 979 transitions. [2023-08-24 18:20:47,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:47,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 979 transitions. [2023-08-24 18:20:47,062 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) [2023-08-24 18:20:47,066 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) [2023-08-24 18:20:47,066 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) [2023-08-24 18:20:47,066 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 723 flow. Second operand 16 states and 979 transitions. [2023-08-24 18:20:47,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 117 transitions, 1537 flow [2023-08-24 18:20:47,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 117 transitions, 1160 flow, removed 175 selfloop flow, removed 5 redundant places. [2023-08-24 18:20:47,079 INFO L231 Difference]: Finished difference. Result has 92 places, 69 transitions, 808 flow [2023-08-24 18:20:47,079 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} [2023-08-24 18:20:47,079 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2023-08-24 18:20:47,079 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 69 transitions, 808 flow [2023-08-24 18:20:47,080 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) [2023-08-24 18:20:47,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:47,080 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:47,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:47,285 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 [2023-08-24 18:20:47,286 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:47,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:47,286 INFO L85 PathProgramCache]: Analyzing trace with hash 291972828, now seen corresponding path program 6 times [2023-08-24 18:20:47,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:47,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507747142] [2023-08-24 18:20:47,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:47,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:20:47,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:47,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507747142] [2023-08-24 18:20:47,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507747142] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:47,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985388940] [2023-08-24 18:20:47,396 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 18:20:47,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:47,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:47,397 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) [2023-08-24 18:20:47,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 18:20:47,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-24 18:20:47,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:47,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 18:20:47,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:47,527 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:20:47,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:47,636 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:20:47,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985388940] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:47,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:47,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-24 18:20:47,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450825878] [2023-08-24 18:20:47,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:47,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 18:20:47,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:47,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 18:20:47,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-24 18:20:47,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:47,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 69 transitions, 808 flow. Second operand has 17 states, 17 states have (on average 57.8235294117647) internal successors, (983), 17 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:47,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:47,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:47,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:48,104 INFO L124 PetriNetUnfolderBase]: 408/747 cut-off events. [2023-08-24 18:20:48,104 INFO L125 PetriNetUnfolderBase]: For 15120/15120 co-relation queries the response was YES. [2023-08-24 18:20:48,108 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. [2023-08-24 18:20:48,111 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 73 selfloop transitions, 71 changer transitions 37/181 dead transitions. [2023-08-24 18:20:48,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 181 transitions, 2194 flow [2023-08-24 18:20:48,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-24 18:20:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-24 18:20:48,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1346 transitions. [2023-08-24 18:20:48,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3921911421911422 [2023-08-24 18:20:48,116 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1346 transitions. [2023-08-24 18:20:48,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1346 transitions. [2023-08-24 18:20:48,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:48,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1346 transitions. [2023-08-24 18:20:48,120 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) [2023-08-24 18:20:48,125 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) [2023-08-24 18:20:48,126 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) [2023-08-24 18:20:48,126 INFO L175 Difference]: Start difference. First operand has 92 places, 69 transitions, 808 flow. Second operand 22 states and 1346 transitions. [2023-08-24 18:20:48,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 181 transitions, 2194 flow [2023-08-24 18:20:48,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 181 transitions, 2082 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-08-24 18:20:48,155 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 1553 flow [2023-08-24 18:20:48,155 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} [2023-08-24 18:20:48,155 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 99 predicate places. [2023-08-24 18:20:48,155 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 1553 flow [2023-08-24 18:20:48,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 57.8235294117647) internal successors, (983), 17 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:48,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:48,156 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:48,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:48,361 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 [2023-08-24 18:20:48,361 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:48,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:48,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1663879424, now seen corresponding path program 7 times [2023-08-24 18:20:48,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:48,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468677673] [2023-08-24 18:20:48,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:48,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:20:48,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:48,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468677673] [2023-08-24 18:20:48,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468677673] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:48,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453533103] [2023-08-24 18:20:48,505 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 18:20:48,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:48,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:48,506 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) [2023-08-24 18:20:48,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 18:20:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:48,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 18:20:48,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:48,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:20:48,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:48,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:20:48,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453533103] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:48,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:48,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-24 18:20:48,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481350145] [2023-08-24 18:20:48,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:48,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 18:20:48,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:48,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 18:20:48,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-24 18:20:48,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:48,717 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) [2023-08-24 18:20:48,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:48,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:48,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:49,350 INFO L124 PetriNetUnfolderBase]: 632/1131 cut-off events. [2023-08-24 18:20:49,350 INFO L125 PetriNetUnfolderBase]: For 41223/41223 co-relation queries the response was YES. [2023-08-24 18:20:49,358 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 5374 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. [2023-08-24 18:20:49,363 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 71 selfloop transitions, 133 changer transitions 46/250 dead transitions. [2023-08-24 18:20:49,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 250 transitions, 3947 flow [2023-08-24 18:20:49,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-24 18:20:49,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-24 18:20:49,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1591 transitions. [2023-08-24 18:20:49,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.392258382642998 [2023-08-24 18:20:49,368 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1591 transitions. [2023-08-24 18:20:49,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1591 transitions. [2023-08-24 18:20:49,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:49,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1591 transitions. [2023-08-24 18:20:49,371 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) [2023-08-24 18:20:49,377 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) [2023-08-24 18:20:49,378 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) [2023-08-24 18:20:49,378 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 1553 flow. Second operand 26 states and 1591 transitions. [2023-08-24 18:20:49,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 250 transitions, 3947 flow [2023-08-24 18:20:49,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 250 transitions, 3577 flow, removed 173 selfloop flow, removed 6 redundant places. [2023-08-24 18:20:49,455 INFO L231 Difference]: Finished difference. Result has 156 places, 161 transitions, 2715 flow [2023-08-24 18:20:49,456 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} [2023-08-24 18:20:49,456 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 132 predicate places. [2023-08-24 18:20:49,456 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 161 transitions, 2715 flow [2023-08-24 18:20:49,457 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) [2023-08-24 18:20:49,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:49,457 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:49,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:49,662 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 [2023-08-24 18:20:49,663 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:49,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:49,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1789443084, now seen corresponding path program 8 times [2023-08-24 18:20:49,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:49,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282477609] [2023-08-24 18:20:49,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:49,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:49,832 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:49,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:49,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282477609] [2023-08-24 18:20:49,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282477609] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:49,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139635666] [2023-08-24 18:20:49,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 18:20:49,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:49,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:49,834 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) [2023-08-24 18:20:49,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 18:20:49,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 18:20:49,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:49,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-24 18:20:49,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:49,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:50,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139635666] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:50,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:50,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-24 18:20:50,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837073411] [2023-08-24 18:20:50,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:50,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-24 18:20:50,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:50,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-24 18:20:50,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2023-08-24 18:20:50,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:50,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 161 transitions, 2715 flow. Second operand has 25 states, 25 states have (on average 57.44) internal successors, (1436), 25 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:50,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:50,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:50,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:50,901 INFO L124 PetriNetUnfolderBase]: 868/1603 cut-off events. [2023-08-24 18:20:50,901 INFO L125 PetriNetUnfolderBase]: For 100387/100387 co-relation queries the response was YES. [2023-08-24 18:20:50,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15126 conditions, 1603 events. 868/1603 cut-off events. For 100387/100387 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8692 event pairs, 62 based on Foata normal form. 40/1643 useless extension candidates. Maximal degree in co-relation 15058. Up to 566 conditions per place. [2023-08-24 18:20:50,925 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 82 selfloop transitions, 180 changer transitions 47/309 dead transitions. [2023-08-24 18:20:50,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 309 transitions, 6864 flow [2023-08-24 18:20:50,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-24 18:20:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-24 18:20:50,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1644 transitions. [2023-08-24 18:20:50,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903133903133903 [2023-08-24 18:20:50,929 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1644 transitions. [2023-08-24 18:20:50,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1644 transitions. [2023-08-24 18:20:50,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:50,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1644 transitions. [2023-08-24 18:20:50,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 60.888888888888886) internal successors, (1644), 27 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:50,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 156.0) internal successors, (4368), 28 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:50,938 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 156.0) internal successors, (4368), 28 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:50,938 INFO L175 Difference]: Start difference. First operand has 156 places, 161 transitions, 2715 flow. Second operand 27 states and 1644 transitions. [2023-08-24 18:20:50,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 309 transitions, 6864 flow [2023-08-24 18:20:51,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 309 transitions, 4997 flow, removed 912 selfloop flow, removed 9 redundant places. [2023-08-24 18:20:51,183 INFO L231 Difference]: Finished difference. Result has 186 places, 226 transitions, 3906 flow [2023-08-24 18:20:51,183 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=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3906, PETRI_PLACES=186, PETRI_TRANSITIONS=226} [2023-08-24 18:20:51,183 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 162 predicate places. [2023-08-24 18:20:51,184 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 226 transitions, 3906 flow [2023-08-24 18:20:51,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 57.44) internal successors, (1436), 25 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:51,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:51,185 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:51,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:51,390 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 [2023-08-24 18:20:51,390 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:51,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:51,391 INFO L85 PathProgramCache]: Analyzing trace with hash -827872136, now seen corresponding path program 9 times [2023-08-24 18:20:51,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:51,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924536468] [2023-08-24 18:20:51,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:51,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 18:20:51,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:51,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924536468] [2023-08-24 18:20:51,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924536468] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:51,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596682431] [2023-08-24 18:20:51,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 18:20:51,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:51,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:51,550 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) [2023-08-24 18:20:51,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 18:20:51,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-24 18:20:51,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:51,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-24 18:20:51,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 18:20:51,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:51,848 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 18:20:51,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596682431] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:51,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:51,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-08-24 18:20:51,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115471375] [2023-08-24 18:20:51,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:51,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-24 18:20:51,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:51,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-24 18:20:51,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2023-08-24 18:20:51,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:51,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 226 transitions, 3906 flow. Second operand has 21 states, 21 states have (on average 57.714285714285715) internal successors, (1212), 21 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:51,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:51,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:51,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:53,043 INFO L124 PetriNetUnfolderBase]: 1472/2711 cut-off events. [2023-08-24 18:20:53,043 INFO L125 PetriNetUnfolderBase]: For 169869/169869 co-relation queries the response was YES. [2023-08-24 18:20:53,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26144 conditions, 2711 events. 1472/2711 cut-off events. For 169869/169869 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 16050 event pairs, 46 based on Foata normal form. 32/2743 useless extension candidates. Maximal degree in co-relation 26063. Up to 1062 conditions per place. [2023-08-24 18:20:53,091 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 91 selfloop transitions, 329 changer transitions 58/478 dead transitions. [2023-08-24 18:20:53,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 478 transitions, 9919 flow [2023-08-24 18:20:53,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-24 18:20:53,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-24 18:20:53,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1955 transitions. [2023-08-24 18:20:53,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916266025641026 [2023-08-24 18:20:53,095 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1955 transitions. [2023-08-24 18:20:53,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1955 transitions. [2023-08-24 18:20:53,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:53,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1955 transitions. [2023-08-24 18:20:53,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 61.09375) internal successors, (1955), 32 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:53,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 156.0) internal successors, (5148), 33 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:53,106 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 156.0) internal successors, (5148), 33 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:53,106 INFO L175 Difference]: Start difference. First operand has 186 places, 226 transitions, 3906 flow. Second operand 32 states and 1955 transitions. [2023-08-24 18:20:53,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 478 transitions, 9919 flow [2023-08-24 18:20:53,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 478 transitions, 8456 flow, removed 681 selfloop flow, removed 9 redundant places. [2023-08-24 18:20:53,649 INFO L231 Difference]: Finished difference. Result has 221 places, 386 transitions, 7472 flow [2023-08-24 18:20:53,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7472, PETRI_PLACES=221, PETRI_TRANSITIONS=386} [2023-08-24 18:20:53,650 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 197 predicate places. [2023-08-24 18:20:53,650 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 386 transitions, 7472 flow [2023-08-24 18:20:53,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 57.714285714285715) internal successors, (1212), 21 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:53,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:53,651 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:53,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:53,856 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 [2023-08-24 18:20:53,856 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:53,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash 476019586, now seen corresponding path program 10 times [2023-08-24 18:20:53,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:53,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195926644] [2023-08-24 18:20:53,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:53,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:54,254 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:20:54,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:54,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195926644] [2023-08-24 18:20:54,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195926644] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:54,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999133995] [2023-08-24 18:20:54,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 18:20:54,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:54,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:54,257 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) [2023-08-24 18:20:54,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 18:20:54,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 18:20:54,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:54,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-24 18:20:54,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:20:54,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:20:54,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999133995] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:54,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:54,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2023-08-24 18:20:54,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043700723] [2023-08-24 18:20:54,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:54,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-24 18:20:54,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:54,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-24 18:20:54,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2023-08-24 18:20:54,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:54,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 386 transitions, 7472 flow. Second operand has 33 states, 33 states have (on average 57.42424242424242) internal successors, (1895), 33 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:54,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:54,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:54,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:56,687 INFO L124 PetriNetUnfolderBase]: 1968/3695 cut-off events. [2023-08-24 18:20:56,687 INFO L125 PetriNetUnfolderBase]: For 317662/317662 co-relation queries the response was YES. [2023-08-24 18:20:56,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39269 conditions, 3695 events. 1968/3695 cut-off events. For 317662/317662 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 23477 event pairs, 187 based on Foata normal form. 64/3759 useless extension candidates. Maximal degree in co-relation 39174. Up to 1514 conditions per place. [2023-08-24 18:20:56,768 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 218 selfloop transitions, 388 changer transitions 79/685 dead transitions. [2023-08-24 18:20:56,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 685 transitions, 15875 flow [2023-08-24 18:20:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-24 18:20:56,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-24 18:20:56,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2558 transitions. [2023-08-24 18:20:56,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904151404151404 [2023-08-24 18:20:56,781 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2558 transitions. [2023-08-24 18:20:56,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2558 transitions. [2023-08-24 18:20:56,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:56,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2558 transitions. [2023-08-24 18:20:56,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 60.904761904761905) internal successors, (2558), 42 states have internal predecessors, (2558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:56,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 156.0) internal successors, (6708), 43 states have internal predecessors, (6708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:56,794 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 156.0) internal successors, (6708), 43 states have internal predecessors, (6708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:56,794 INFO L175 Difference]: Start difference. First operand has 221 places, 386 transitions, 7472 flow. Second operand 42 states and 2558 transitions. [2023-08-24 18:20:56,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 685 transitions, 15875 flow [2023-08-24 18:20:57,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 685 transitions, 12481 flow, removed 1667 selfloop flow, removed 8 redundant places. [2023-08-24 18:20:57,509 INFO L231 Difference]: Finished difference. Result has 274 places, 517 transitions, 10384 flow [2023-08-24 18:20:57,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=6172, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=10384, PETRI_PLACES=274, PETRI_TRANSITIONS=517} [2023-08-24 18:20:57,509 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 250 predicate places. [2023-08-24 18:20:57,510 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 517 transitions, 10384 flow [2023-08-24 18:20:57,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 57.42424242424242) internal successors, (1895), 33 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:57,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:57,510 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:57,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:57,711 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 [2023-08-24 18:20:57,711 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:57,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:57,712 INFO L85 PathProgramCache]: Analyzing trace with hash 365052096, now seen corresponding path program 11 times [2023-08-24 18:20:57,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:57,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078804116] [2023-08-24 18:20:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:57,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:20:57,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:57,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078804116] [2023-08-24 18:20:57,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078804116] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:57,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878880414] [2023-08-24 18:20:57,929 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 18:20:57,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:57,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:57,930 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) [2023-08-24 18:20:57,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 18:20:58,022 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-08-24 18:20:58,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:58,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-24 18:20:58,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:20:58,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 18:20:58,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878880414] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:58,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:58,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2023-08-24 18:20:58,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014895939] [2023-08-24 18:20:58,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:58,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-24 18:20:58,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:58,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-24 18:20:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=806, Unknown=0, NotChecked=0, Total=1056 [2023-08-24 18:20:58,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:58,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 517 transitions, 10384 flow. Second operand has 33 states, 33 states have (on average 57.39393939393939) internal successors, (1894), 33 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:58,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:58,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:58,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:21:00,849 INFO L124 PetriNetUnfolderBase]: 2388/4407 cut-off events. [2023-08-24 18:21:00,849 INFO L125 PetriNetUnfolderBase]: For 543686/543686 co-relation queries the response was YES. [2023-08-24 18:21:00,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47292 conditions, 4407 events. 2388/4407 cut-off events. For 543686/543686 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 27579 event pairs, 22 based on Foata normal form. 64/4471 useless extension candidates. Maximal degree in co-relation 47176. Up to 1290 conditions per place. [2023-08-24 18:21:00,916 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 127 selfloop transitions, 584 changer transitions 112/823 dead transitions. [2023-08-24 18:21:00,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 823 transitions, 19347 flow [2023-08-24 18:21:00,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-08-24 18:21:00,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-08-24 18:21:00,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 3596 transitions. [2023-08-24 18:21:00,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906996957844415 [2023-08-24 18:21:00,922 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 3596 transitions. [2023-08-24 18:21:00,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 3596 transitions. [2023-08-24 18:21:00,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:21:00,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 3596 transitions. [2023-08-24 18:21:00,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 60.94915254237288) internal successors, (3596), 59 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:00,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 156.0) internal successors, (9360), 60 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:00,940 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 156.0) internal successors, (9360), 60 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:00,940 INFO L175 Difference]: Start difference. First operand has 274 places, 517 transitions, 10384 flow. Second operand 59 states and 3596 transitions. [2023-08-24 18:21:00,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 823 transitions, 19347 flow [2023-08-24 18:21:02,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 823 transitions, 17630 flow, removed 802 selfloop flow, removed 15 redundant places. [2023-08-24 18:21:02,111 INFO L231 Difference]: Finished difference. Result has 352 places, 624 transitions, 14133 flow [2023-08-24 18:21:02,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=8925, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=14133, PETRI_PLACES=352, PETRI_TRANSITIONS=624} [2023-08-24 18:21:02,112 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 328 predicate places. [2023-08-24 18:21:02,112 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 624 transitions, 14133 flow [2023-08-24 18:21:02,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 57.39393939393939) internal successors, (1894), 33 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:02,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:21:02,112 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:21:02,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 18:21:02,313 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 [2023-08-24 18:21:02,313 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:21:02,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:21:02,314 INFO L85 PathProgramCache]: Analyzing trace with hash -7488604, now seen corresponding path program 12 times [2023-08-24 18:21:02,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:21:02,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441580642] [2023-08-24 18:21:02,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:21:02,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:21:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:21:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:21:02,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:21:02,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441580642] [2023-08-24 18:21:02,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441580642] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:21:02,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414540217] [2023-08-24 18:21:02,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 18:21:02,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:21:02,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:21:02,878 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) [2023-08-24 18:21:02,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 18:21:02,975 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-08-24 18:21:02,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:21:02,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-24 18:21:02,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:21:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:21:03,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:21:03,671 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:21:03,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414540217] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:21:03,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:21:03,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 54 [2023-08-24 18:21:03,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743770224] [2023-08-24 18:21:03,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:21:03,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-08-24 18:21:03,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:21:03,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-08-24 18:21:03,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=737, Invalid=2343, Unknown=0, NotChecked=0, Total=3080 [2023-08-24 18:21:03,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:21:03,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 624 transitions, 14133 flow. Second operand has 56 states, 56 states have (on average 57.19642857142857) internal successors, (3203), 56 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:03,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:21:03,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:21:03,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:21:07,988 INFO L124 PetriNetUnfolderBase]: 2744/5015 cut-off events. [2023-08-24 18:21:07,988 INFO L125 PetriNetUnfolderBase]: For 1155365/1155365 co-relation queries the response was YES. [2023-08-24 18:21:08,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70177 conditions, 5015 events. 2744/5015 cut-off events. For 1155365/1155365 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 29965 event pairs, 10 based on Foata normal form. 60/5075 useless extension candidates. Maximal degree in co-relation 70028. Up to 1518 conditions per place. [2023-08-24 18:21:08,057 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 128 selfloop transitions, 673 changer transitions 158/959 dead transitions. [2023-08-24 18:21:08,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 959 transitions, 28947 flow [2023-08-24 18:21:08,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-08-24 18:21:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-08-24 18:21:08,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 4987 transitions. [2023-08-24 18:21:08,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38985303314571607 [2023-08-24 18:21:08,064 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 4987 transitions. [2023-08-24 18:21:08,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 4987 transitions. [2023-08-24 18:21:08,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:21:08,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 4987 transitions. [2023-08-24 18:21:08,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 60.81707317073171) internal successors, (4987), 82 states have internal predecessors, (4987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:08,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 156.0) internal successors, (12948), 83 states have internal predecessors, (12948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:08,087 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 156.0) internal successors, (12948), 83 states have internal predecessors, (12948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:08,088 INFO L175 Difference]: Start difference. First operand has 352 places, 624 transitions, 14133 flow. Second operand 82 states and 4987 transitions. [2023-08-24 18:21:08,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 959 transitions, 28947 flow [2023-08-24 18:21:10,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 959 transitions, 24438 flow, removed 2147 selfloop flow, removed 17 redundant places. [2023-08-24 18:21:10,697 INFO L231 Difference]: Finished difference. Result has 446 places, 713 transitions, 16491 flow [2023-08-24 18:21:10,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=11242, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=585, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=16491, PETRI_PLACES=446, PETRI_TRANSITIONS=713} [2023-08-24 18:21:10,698 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 422 predicate places. [2023-08-24 18:21:10,698 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 713 transitions, 16491 flow [2023-08-24 18:21:10,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 57.19642857142857) internal successors, (3203), 56 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:10,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:21:10,700 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:21:10,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 18:21:10,905 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 [2023-08-24 18:21:10,905 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:21:10,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:21:10,906 INFO L85 PathProgramCache]: Analyzing trace with hash -403609550, now seen corresponding path program 13 times [2023-08-24 18:21:10,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:21:10,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783776796] [2023-08-24 18:21:10,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:21:10,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:21:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:21:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:21:12,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:21:12,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783776796] [2023-08-24 18:21:12,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783776796] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:21:12,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685718358] [2023-08-24 18:21:12,054 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 18:21:12,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:21:12,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:21:12,057 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:21:12,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 18:21:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:21:12,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-24 18:21:12,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:21:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:21:12,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:21:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:21:13,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685718358] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:21:13,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:21:13,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 46 [2023-08-24 18:21:13,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979619856] [2023-08-24 18:21:13,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:21:13,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-24 18:21:13,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:21:13,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-24 18:21:13,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=1696, Unknown=0, NotChecked=0, Total=2256 [2023-08-24 18:21:13,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:21:13,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 713 transitions, 16491 flow. Second operand has 48 states, 48 states have (on average 57.229166666666664) internal successors, (2747), 48 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:13,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:21:13,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:21:13,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:21:16,133 INFO L124 PetriNetUnfolderBase]: 2880/5287 cut-off events. [2023-08-24 18:21:16,133 INFO L125 PetriNetUnfolderBase]: For 1829546/1829546 co-relation queries the response was YES. [2023-08-24 18:21:16,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84254 conditions, 5287 events. 2880/5287 cut-off events. For 1829546/1829546 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 32065 event pairs, 1141 based on Foata normal form. 24/5311 useless extension candidates. Maximal degree in co-relation 84076. Up to 4761 conditions per place. [2023-08-24 18:21:16,247 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 739 selfloop transitions, 65 changer transitions 91/895 dead transitions. [2023-08-24 18:21:16,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 895 transitions, 25827 flow [2023-08-24 18:21:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-24 18:21:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-24 18:21:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2897 transitions. [2023-08-24 18:21:16,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3868856837606838 [2023-08-24 18:21:16,251 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2897 transitions. [2023-08-24 18:21:16,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2897 transitions. [2023-08-24 18:21:16,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:21:16,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2897 transitions. [2023-08-24 18:21:16,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 60.354166666666664) internal successors, (2897), 48 states have internal predecessors, (2897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:16,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 156.0) internal successors, (7644), 49 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:16,264 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 156.0) internal successors, (7644), 49 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:16,264 INFO L175 Difference]: Start difference. First operand has 446 places, 713 transitions, 16491 flow. Second operand 48 states and 2897 transitions. [2023-08-24 18:21:16,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 895 transitions, 25827 flow [2023-08-24 18:21:21,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 895 transitions, 21290 flow, removed 2136 selfloop flow, removed 15 redundant places. [2023-08-24 18:21:21,611 INFO L231 Difference]: Finished difference. Result has 510 places, 747 transitions, 14499 flow [2023-08-24 18:21:21,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=13054, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=14499, PETRI_PLACES=510, PETRI_TRANSITIONS=747} [2023-08-24 18:21:21,612 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 486 predicate places. [2023-08-24 18:21:21,612 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 747 transitions, 14499 flow [2023-08-24 18:21:21,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 57.229166666666664) internal successors, (2747), 48 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:21,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:21:21,613 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:21:21,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-24 18:21:21,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-24 18:21:21,815 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:21:21,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:21:21,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1424392554, now seen corresponding path program 14 times [2023-08-24 18:21:21,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:21:21,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860046735] [2023-08-24 18:21:21,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:21:21,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:21:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:21:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:21:23,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:21:23,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860046735] [2023-08-24 18:21:23,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860046735] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:21:23,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260146354] [2023-08-24 18:21:23,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 18:21:23,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:21:23,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:21:23,023 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:21:23,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-24 18:21:23,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 18:21:23,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:21:23,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-24 18:21:23,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:21:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:21:23,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:21:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:21:24,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260146354] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:21:24,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:21:24,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 48 [2023-08-24 18:21:24,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244521115] [2023-08-24 18:21:24,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:21:24,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-08-24 18:21:24,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:21:24,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-08-24 18:21:24,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=546, Invalid=1904, Unknown=0, NotChecked=0, Total=2450 [2023-08-24 18:21:24,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:21:24,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 747 transitions, 14499 flow. Second operand has 50 states, 50 states have (on average 57.24) internal successors, (2862), 50 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:24,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:21:24,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:21:24,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:21:27,254 INFO L124 PetriNetUnfolderBase]: 3112/5751 cut-off events. [2023-08-24 18:21:27,254 INFO L125 PetriNetUnfolderBase]: For 2247320/2247320 co-relation queries the response was YES. [2023-08-24 18:21:27,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91615 conditions, 5751 events. 3112/5751 cut-off events. For 2247320/2247320 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 34702 event pairs, 850 based on Foata normal form. 24/5775 useless extension candidates. Maximal degree in co-relation 91404. Up to 3547 conditions per place. [2023-08-24 18:21:27,358 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 612 selfloop transitions, 278 changer transitions 103/993 dead transitions. [2023-08-24 18:21:27,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 993 transitions, 24196 flow [2023-08-24 18:21:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-08-24 18:21:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-08-24 18:21:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 3264 transitions. [2023-08-24 18:21:27,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38746438746438744 [2023-08-24 18:21:27,362 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 3264 transitions. [2023-08-24 18:21:27,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 3264 transitions. [2023-08-24 18:21:27,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:21:27,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 3264 transitions. [2023-08-24 18:21:27,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 60.44444444444444) internal successors, (3264), 54 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:27,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 156.0) internal successors, (8580), 55 states have internal predecessors, (8580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:27,374 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 156.0) internal successors, (8580), 55 states have internal predecessors, (8580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:27,374 INFO L175 Difference]: Start difference. First operand has 510 places, 747 transitions, 14499 flow. Second operand 54 states and 3264 transitions. [2023-08-24 18:21:27,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 993 transitions, 24196 flow [2023-08-24 18:21:32,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 993 transitions, 23367 flow, removed 384 selfloop flow, removed 15 redundant places. [2023-08-24 18:21:33,011 INFO L231 Difference]: Finished difference. Result has 558 places, 805 transitions, 15855 flow [2023-08-24 18:21:33,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=13670, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=15855, PETRI_PLACES=558, PETRI_TRANSITIONS=805} [2023-08-24 18:21:33,012 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 534 predicate places. [2023-08-24 18:21:33,012 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 805 transitions, 15855 flow [2023-08-24 18:21:33,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 57.24) internal successors, (2862), 50 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:33,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:21:33,013 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:21:33,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-24 18:21:33,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:21:33,217 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:21:33,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:21:33,217 INFO L85 PathProgramCache]: Analyzing trace with hash -54601882, now seen corresponding path program 15 times [2023-08-24 18:21:33,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:21:33,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139151432] [2023-08-24 18:21:33,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:21:33,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:21:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:21:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:21:34,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:21:34,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139151432] [2023-08-24 18:21:34,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139151432] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:21:34,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257276889] [2023-08-24 18:21:34,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 18:21:34,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:21:34,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:21:34,241 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:21:34,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-24 18:21:34,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2023-08-24 18:21:34,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:21:34,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-24 18:21:34,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:21:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:21:34,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:21:35,382 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:21:35,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257276889] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:21:35,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:21:35,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 49 [2023-08-24 18:21:35,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277438280] [2023-08-24 18:21:35,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:21:35,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-08-24 18:21:35,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:21:35,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-08-24 18:21:35,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=2046, Unknown=0, NotChecked=0, Total=2550 [2023-08-24 18:21:35,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:21:35,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 805 transitions, 15855 flow. Second operand has 51 states, 51 states have (on average 57.23529411764706) internal successors, (2919), 51 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:35,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:21:35,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:21:35,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:21:39,540 INFO L124 PetriNetUnfolderBase]: 3600/6727 cut-off events. [2023-08-24 18:21:39,541 INFO L125 PetriNetUnfolderBase]: For 2917099/2917099 co-relation queries the response was YES. [2023-08-24 18:21:39,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112993 conditions, 6727 events. 3600/6727 cut-off events. For 2917099/2917099 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 41840 event pairs, 360 based on Foata normal form. 24/6751 useless extension candidates. Maximal degree in co-relation 112772. Up to 2262 conditions per place. [2023-08-24 18:21:39,652 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 370 selfloop transitions, 644 changer transitions 111/1125 dead transitions. [2023-08-24 18:21:39,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 1125 transitions, 28224 flow [2023-08-24 18:21:39,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-08-24 18:21:39,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-08-24 18:21:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3508 transitions. [2023-08-24 18:21:39,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38770999115826704 [2023-08-24 18:21:39,657 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3508 transitions. [2023-08-24 18:21:39,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3508 transitions. [2023-08-24 18:21:39,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:21:39,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3508 transitions. [2023-08-24 18:21:39,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 60.48275862068966) internal successors, (3508), 58 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:39,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 156.0) internal successors, (9204), 59 states have internal predecessors, (9204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:39,670 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 156.0) internal successors, (9204), 59 states have internal predecessors, (9204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:39,670 INFO L175 Difference]: Start difference. First operand has 558 places, 805 transitions, 15855 flow. Second operand 58 states and 3508 transitions. [2023-08-24 18:21:39,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 1125 transitions, 28224 flow [2023-08-24 18:21:48,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 1125 transitions, 26677 flow, removed 742 selfloop flow, removed 12 redundant places. [2023-08-24 18:21:48,075 INFO L231 Difference]: Finished difference. Result has 633 places, 931 transitions, 19958 flow [2023-08-24 18:21:48,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=14868, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=19958, PETRI_PLACES=633, PETRI_TRANSITIONS=931} [2023-08-24 18:21:48,076 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 609 predicate places. [2023-08-24 18:21:48,076 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 931 transitions, 19958 flow [2023-08-24 18:21:48,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 57.23529411764706) internal successors, (2919), 51 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:48,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:21:48,077 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:21:48,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-24 18:21:48,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:21:48,278 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:21:48,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:21:48,278 INFO L85 PathProgramCache]: Analyzing trace with hash 825408254, now seen corresponding path program 16 times [2023-08-24 18:21:48,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:21:48,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373399831] [2023-08-24 18:21:48,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:21:48,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:21:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:21:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:21:49,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:21:49,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373399831] [2023-08-24 18:21:49,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373399831] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:21:49,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820220557] [2023-08-24 18:21:49,277 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 18:21:49,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:21:49,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:21:49,278 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:21:49,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-24 18:21:49,398 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 18:21:49,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:21:49,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-24 18:21:49,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:21:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:21:49,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:21:50,382 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:21:50,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820220557] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:21:50,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:21:50,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 51 [2023-08-24 18:21:50,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748308345] [2023-08-24 18:21:50,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:21:50,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-08-24 18:21:50,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:21:50,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-08-24 18:21:50,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=2312, Unknown=0, NotChecked=0, Total=2756 [2023-08-24 18:21:50,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:21:50,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 931 transitions, 19958 flow. Second operand has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:50,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:21:50,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:21:50,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:21:55,668 INFO L124 PetriNetUnfolderBase]: 3864/7255 cut-off events. [2023-08-24 18:21:55,669 INFO L125 PetriNetUnfolderBase]: For 3503530/3503530 co-relation queries the response was YES. [2023-08-24 18:21:55,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129388 conditions, 7255 events. 3864/7255 cut-off events. For 3503530/3503530 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 45670 event pairs, 202 based on Foata normal form. 24/7279 useless extension candidates. Maximal degree in co-relation 129136. Up to 2514 conditions per place. [2023-08-24 18:21:55,924 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 271 selfloop transitions, 817 changer transitions 121/1209 dead transitions. [2023-08-24 18:21:55,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 1209 transitions, 32011 flow [2023-08-24 18:21:55,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-08-24 18:21:55,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-08-24 18:21:55,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 3813 transitions. [2023-08-24 18:21:55,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.387973137973138 [2023-08-24 18:21:55,928 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 3813 transitions. [2023-08-24 18:21:55,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 3813 transitions. [2023-08-24 18:21:55,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:21:55,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 3813 transitions. [2023-08-24 18:21:55,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 60.523809523809526) internal successors, (3813), 63 states have internal predecessors, (3813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:55,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 156.0) internal successors, (9984), 64 states have internal predecessors, (9984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:55,941 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 156.0) internal successors, (9984), 64 states have internal predecessors, (9984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:21:55,941 INFO L175 Difference]: Start difference. First operand has 633 places, 931 transitions, 19958 flow. Second operand 63 states and 3813 transitions. [2023-08-24 18:21:55,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 1209 transitions, 32011 flow [2023-08-24 18:22:05,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 676 places, 1209 transitions, 30346 flow, removed 641 selfloop flow, removed 19 redundant places. [2023-08-24 18:22:05,963 INFO L231 Difference]: Finished difference. Result has 701 places, 998 transitions, 22801 flow [2023-08-24 18:22:05,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=18653, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=931, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=760, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=22801, PETRI_PLACES=701, PETRI_TRANSITIONS=998} [2023-08-24 18:22:05,964 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 677 predicate places. [2023-08-24 18:22:05,964 INFO L495 AbstractCegarLoop]: Abstraction has has 701 places, 998 transitions, 22801 flow [2023-08-24 18:22:05,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:05,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:22:05,965 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:22:05,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-24 18:22:06,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-24 18:22:06,166 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:22:06,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:22:06,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1018123480, now seen corresponding path program 17 times [2023-08-24 18:22:06,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:22:06,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963653594] [2023-08-24 18:22:06,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:22:06,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:22:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:22:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:07,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:22:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963653594] [2023-08-24 18:22:07,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963653594] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:22:07,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82060454] [2023-08-24 18:22:07,006 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 18:22:07,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:22:07,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:22:07,007 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:22:07,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-24 18:22:07,115 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-08-24 18:22:07,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:22:07,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-24 18:22:07,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:22:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:07,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:22:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:07,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82060454] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:22:07,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:22:07,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 49 [2023-08-24 18:22:07,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374763688] [2023-08-24 18:22:07,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:22:07,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-08-24 18:22:07,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:22:07,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-08-24 18:22:07,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=2151, Unknown=0, NotChecked=0, Total=2550 [2023-08-24 18:22:07,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:22:07,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 998 transitions, 22801 flow. Second operand has 51 states, 51 states have (on average 57.23529411764706) internal successors, (2919), 51 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:07,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:22:07,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:22:07,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:22:13,640 INFO L124 PetriNetUnfolderBase]: 4064/7655 cut-off events. [2023-08-24 18:22:13,640 INFO L125 PetriNetUnfolderBase]: For 3840462/3840462 co-relation queries the response was YES. [2023-08-24 18:22:13,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140895 conditions, 7655 events. 4064/7655 cut-off events. For 3840462/3840462 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 48420 event pairs, 150 based on Foata normal form. 24/7679 useless extension candidates. Maximal degree in co-relation 140617. Up to 2714 conditions per place. [2023-08-24 18:22:13,804 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 234 selfloop transitions, 909 changer transitions 131/1274 dead transitions. [2023-08-24 18:22:13,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 768 places, 1274 transitions, 35491 flow [2023-08-24 18:22:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-08-24 18:22:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-08-24 18:22:13,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 4118 transitions. [2023-08-24 18:22:13,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3881975867269985 [2023-08-24 18:22:13,809 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 4118 transitions. [2023-08-24 18:22:13,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 4118 transitions. [2023-08-24 18:22:13,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:22:13,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 4118 transitions. [2023-08-24 18:22:13,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 60.55882352941177) internal successors, (4118), 68 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:13,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 156.0) internal successors, (10764), 69 states have internal predecessors, (10764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:13,823 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 156.0) internal successors, (10764), 69 states have internal predecessors, (10764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:13,823 INFO L175 Difference]: Start difference. First operand has 701 places, 998 transitions, 22801 flow. Second operand 68 states and 4118 transitions. [2023-08-24 18:22:13,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 768 places, 1274 transitions, 35491 flow [2023-08-24 18:22:24,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 740 places, 1274 transitions, 33403 flow, removed 598 selfloop flow, removed 28 redundant places. [2023-08-24 18:22:24,311 INFO L231 Difference]: Finished difference. Result has 760 places, 1049 transitions, 24676 flow [2023-08-24 18:22:24,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=20801, PETRI_DIFFERENCE_MINUEND_PLACES=673, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=868, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=24676, PETRI_PLACES=760, PETRI_TRANSITIONS=1049} [2023-08-24 18:22:24,313 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 736 predicate places. [2023-08-24 18:22:24,313 INFO L495 AbstractCegarLoop]: Abstraction has has 760 places, 1049 transitions, 24676 flow [2023-08-24 18:22:24,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 57.23529411764706) internal successors, (2919), 51 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:24,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:22:24,313 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:22:24,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-24 18:22:24,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:22:24,514 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:22:24,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:22:24,514 INFO L85 PathProgramCache]: Analyzing trace with hash -469259072, now seen corresponding path program 18 times [2023-08-24 18:22:24,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:22:24,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71348613] [2023-08-24 18:22:24,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:22:24,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:22:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:22:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:25,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:22:25,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71348613] [2023-08-24 18:22:25,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71348613] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:22:25,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93377339] [2023-08-24 18:22:25,279 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 18:22:25,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:22:25,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:22:25,280 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:22:25,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-24 18:22:25,402 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2023-08-24 18:22:25,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:22:25,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-24 18:22:25,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:22:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:25,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:22:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:26,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93377339] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:22:26,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:22:26,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 51 [2023-08-24 18:22:26,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868581155] [2023-08-24 18:22:26,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:22:26,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-08-24 18:22:26,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:22:26,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-08-24 18:22:26,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=2372, Unknown=0, NotChecked=0, Total=2756 [2023-08-24 18:22:26,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:22:26,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 760 places, 1049 transitions, 24676 flow. Second operand has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:26,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:22:26,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:22:26,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:22:32,701 INFO L124 PetriNetUnfolderBase]: 4224/7975 cut-off events. [2023-08-24 18:22:32,701 INFO L125 PetriNetUnfolderBase]: For 4379151/4379151 co-relation queries the response was YES. [2023-08-24 18:22:32,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153155 conditions, 7975 events. 4224/7975 cut-off events. For 4379151/4379151 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 50578 event pairs, 114 based on Foata normal form. 24/7999 useless extension candidates. Maximal degree in co-relation 152856. Up to 2858 conditions per place. [2023-08-24 18:22:32,898 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 210 selfloop transitions, 979 changer transitions 141/1330 dead transitions. [2023-08-24 18:22:32,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 832 places, 1330 transitions, 38579 flow [2023-08-24 18:22:32,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-08-24 18:22:32,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2023-08-24 18:22:32,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 4423 transitions. [2023-08-24 18:22:32,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839128907622056 [2023-08-24 18:22:32,903 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 4423 transitions. [2023-08-24 18:22:32,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 4423 transitions. [2023-08-24 18:22:32,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:22:32,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 4423 transitions. [2023-08-24 18:22:32,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 60.58904109589041) internal successors, (4423), 73 states have internal predecessors, (4423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:32,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 156.0) internal successors, (11544), 74 states have internal predecessors, (11544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:32,918 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 156.0) internal successors, (11544), 74 states have internal predecessors, (11544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:32,918 INFO L175 Difference]: Start difference. First operand has 760 places, 1049 transitions, 24676 flow. Second operand 73 states and 4423 transitions. [2023-08-24 18:22:32,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 832 places, 1330 transitions, 38579 flow [2023-08-24 18:22:45,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 1330 transitions, 35727 flow, removed 767 selfloop flow, removed 40 redundant places. [2023-08-24 18:22:45,680 INFO L231 Difference]: Finished difference. Result has 807 places, 1090 transitions, 26118 flow [2023-08-24 18:22:45,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=22270, PETRI_DIFFERENCE_MINUEND_PLACES=720, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1049, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=948, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=26118, PETRI_PLACES=807, PETRI_TRANSITIONS=1090} [2023-08-24 18:22:45,682 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 783 predicate places. [2023-08-24 18:22:45,682 INFO L495 AbstractCegarLoop]: Abstraction has has 807 places, 1090 transitions, 26118 flow [2023-08-24 18:22:45,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:45,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:22:45,683 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:22:45,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-24 18:22:45,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:22:45,889 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:22:45,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:22:45,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1802376242, now seen corresponding path program 19 times [2023-08-24 18:22:45,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:22:45,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677546633] [2023-08-24 18:22:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:22:45,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:22:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:22:46,633 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:46,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:22:46,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677546633] [2023-08-24 18:22:46,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677546633] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:22:46,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287127575] [2023-08-24 18:22:46,634 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 18:22:46,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:22:46,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:22:46,635 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:22:46,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-24 18:22:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:22:46,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-24 18:22:46,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:22:46,889 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:46,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:22:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:47,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287127575] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:22:47,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:22:47,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 51 [2023-08-24 18:22:47,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126394295] [2023-08-24 18:22:47,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:22:47,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-08-24 18:22:47,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:22:47,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-08-24 18:22:47,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=2360, Unknown=0, NotChecked=0, Total=2756 [2023-08-24 18:22:47,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:22:47,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 807 places, 1090 transitions, 26118 flow. Second operand has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:47,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:22:47,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:22:47,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:22:54,487 INFO L124 PetriNetUnfolderBase]: 4372/8259 cut-off events. [2023-08-24 18:22:54,487 INFO L125 PetriNetUnfolderBase]: For 4657156/4657156 co-relation queries the response was YES. [2023-08-24 18:22:54,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161084 conditions, 8259 events. 4372/8259 cut-off events. For 4657156/4657156 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 52532 event pairs, 70 based on Foata normal form. 24/8283 useless extension candidates. Maximal degree in co-relation 160769. Up to 2986 conditions per place. [2023-08-24 18:22:54,704 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 188 selfloop transitions, 1045 changer transitions 153/1386 dead transitions. [2023-08-24 18:22:54,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 885 places, 1386 transitions, 41080 flow [2023-08-24 18:22:54,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-08-24 18:22:54,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2023-08-24 18:22:54,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 4789 transitions. [2023-08-24 18:22:54,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3885913664394677 [2023-08-24 18:22:54,709 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 4789 transitions. [2023-08-24 18:22:54,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 4789 transitions. [2023-08-24 18:22:54,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:22:54,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 4789 transitions. [2023-08-24 18:22:54,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 60.620253164556964) internal successors, (4789), 79 states have internal predecessors, (4789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:54,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 156.0) internal successors, (12480), 80 states have internal predecessors, (12480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:54,727 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 156.0) internal successors, (12480), 80 states have internal predecessors, (12480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:54,727 INFO L175 Difference]: Start difference. First operand has 807 places, 1090 transitions, 26118 flow. Second operand 79 states and 4789 transitions. [2023-08-24 18:22:54,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 885 places, 1386 transitions, 41080 flow [2023-08-24 18:23:11,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 834 places, 1386 transitions, 37917 flow, removed 789 selfloop flow, removed 51 redundant places. [2023-08-24 18:23:11,756 INFO L231 Difference]: Finished difference. Result has 845 places, 1128 transitions, 27185 flow [2023-08-24 18:23:11,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=23419, PETRI_DIFFERENCE_MINUEND_PLACES=756, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1090, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1018, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=27185, PETRI_PLACES=845, PETRI_TRANSITIONS=1128} [2023-08-24 18:23:11,757 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 821 predicate places. [2023-08-24 18:23:11,757 INFO L495 AbstractCegarLoop]: Abstraction has has 845 places, 1128 transitions, 27185 flow [2023-08-24 18:23:11,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:23:11,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:23:11,758 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:23:11,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-24 18:23:11,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-24 18:23:11,958 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:23:11,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:23:11,959 INFO L85 PathProgramCache]: Analyzing trace with hash 222563676, now seen corresponding path program 20 times [2023-08-24 18:23:11,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:23:11,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448979376] [2023-08-24 18:23:11,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:23:11,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:23:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:23:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:23:12,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:23:12,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448979376] [2023-08-24 18:23:12,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448979376] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:23:12,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820878489] [2023-08-24 18:23:12,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 18:23:12,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:23:12,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:23:12,733 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:23:12,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-24 18:23:12,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 18:23:12,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:23:12,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-24 18:23:12,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:23:12,945 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:23:12,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:23:13,545 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:23:13,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820878489] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:23:13,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:23:13,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 51 [2023-08-24 18:23:13,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897736295] [2023-08-24 18:23:13,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:23:13,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-08-24 18:23:13,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:23:13,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-08-24 18:23:13,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=2312, Unknown=0, NotChecked=0, Total=2756 [2023-08-24 18:23:13,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:23:13,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 845 places, 1128 transitions, 27185 flow. Second operand has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:23:13,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:23:13,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:23:13,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:23:21,057 INFO L124 PetriNetUnfolderBase]: 4508/8507 cut-off events. [2023-08-24 18:23:21,057 INFO L125 PetriNetUnfolderBase]: For 4895517/4895517 co-relation queries the response was YES. [2023-08-24 18:23:21,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167659 conditions, 8507 events. 4508/8507 cut-off events. For 4895517/4895517 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 54300 event pairs, 46 based on Foata normal form. 24/8531 useless extension candidates. Maximal degree in co-relation 167332. Up to 3090 conditions per place. [2023-08-24 18:23:21,266 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 177 selfloop transitions, 1097 changer transitions 165/1439 dead transitions. [2023-08-24 18:23:21,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 929 places, 1439 transitions, 43237 flow [2023-08-24 18:23:21,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-08-24 18:23:21,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2023-08-24 18:23:21,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 5155 transitions. [2023-08-24 18:23:21,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388763197586727 [2023-08-24 18:23:21,270 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 5155 transitions. [2023-08-24 18:23:21,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 5155 transitions. [2023-08-24 18:23:21,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:23:21,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 5155 transitions. [2023-08-24 18:23:21,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 60.64705882352941) internal successors, (5155), 85 states have internal predecessors, (5155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:23:21,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 156.0) internal successors, (13416), 86 states have internal predecessors, (13416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:23:21,287 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 156.0) internal successors, (13416), 86 states have internal predecessors, (13416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:23:21,287 INFO L175 Difference]: Start difference. First operand has 845 places, 1128 transitions, 27185 flow. Second operand 85 states and 5155 transitions. [2023-08-24 18:23:21,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 929 places, 1439 transitions, 43237 flow [2023-08-24 18:23:35,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 874 places, 1439 transitions, 40053 flow, removed 804 selfloop flow, removed 55 redundant places. [2023-08-24 18:23:35,123 INFO L231 Difference]: Finished difference. Result has 885 places, 1163 transitions, 28288 flow [2023-08-24 18:23:35,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=24483, PETRI_DIFFERENCE_MINUEND_PLACES=790, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1068, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=28288, PETRI_PLACES=885, PETRI_TRANSITIONS=1163} [2023-08-24 18:23:35,125 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 861 predicate places. [2023-08-24 18:23:35,125 INFO L495 AbstractCegarLoop]: Abstraction has has 885 places, 1163 transitions, 28288 flow [2023-08-24 18:23:35,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 57.24528301886792) internal successors, (3034), 53 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:23:35,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:23:35,126 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:23:35,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-24 18:23:35,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:23:35,331 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:23:35,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:23:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash -144410362, now seen corresponding path program 21 times [2023-08-24 18:23:35,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:23:35,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527277489] [2023-08-24 18:23:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:23:35,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:23:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:23:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:23:36,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:23:36,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527277489] [2023-08-24 18:23:36,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527277489] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:23:36,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73074606] [2023-08-24 18:23:36,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 18:23:36,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:23:36,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:23:36,130 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:23:36,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-24 18:23:36,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2023-08-24 18:23:36,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:23:36,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-24 18:23:36,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:23:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:23:36,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:23:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:23:36,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73074606] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:23:36,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:23:36,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 49 [2023-08-24 18:23:36,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687913314] [2023-08-24 18:23:36,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:23:36,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-08-24 18:23:36,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:23:36,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-08-24 18:23:36,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=520, Invalid=2030, Unknown=0, NotChecked=0, Total=2550 [2023-08-24 18:23:36,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:23:36,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 885 places, 1163 transitions, 28288 flow. Second operand has 51 states, 51 states have (on average 57.21568627450981) internal successors, (2918), 51 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:23:36,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:23:36,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:23:36,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:23:44,878 INFO L124 PetriNetUnfolderBase]: 4616/8699 cut-off events. [2023-08-24 18:23:44,878 INFO L125 PetriNetUnfolderBase]: For 5132753/5132753 co-relation queries the response was YES. [2023-08-24 18:23:45,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174886 conditions, 8699 events. 4616/8699 cut-off events. For 5132753/5132753 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 55360 event pairs, 28 based on Foata normal form. 24/8723 useless extension candidates. Maximal degree in co-relation 174547. Up to 3166 conditions per place. [2023-08-24 18:23:45,098 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 181 selfloop transitions, 1133 changer transitions 163/1477 dead transitions. [2023-08-24 18:23:45,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 974 places, 1477 transitions, 45995 flow [2023-08-24 18:23:45,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-08-24 18:23:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2023-08-24 18:23:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 5461 transitions. [2023-08-24 18:23:45,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388960113960114 [2023-08-24 18:23:45,102 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 5461 transitions. [2023-08-24 18:23:45,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 5461 transitions. [2023-08-24 18:23:45,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:23:45,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 5461 transitions. [2023-08-24 18:23:45,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 60.67777777777778) internal successors, (5461), 90 states have internal predecessors, (5461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:23:45,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 156.0) internal successors, (14196), 91 states have internal predecessors, (14196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:23:45,115 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 156.0) internal successors, (14196), 91 states have internal predecessors, (14196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:23:45,115 INFO L175 Difference]: Start difference. First operand has 885 places, 1163 transitions, 28288 flow. Second operand 90 states and 5461 transitions. [2023-08-24 18:23:45,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 974 places, 1477 transitions, 45995 flow [2023-08-24 18:24:00,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 909 places, 1477 transitions, 42731 flow, removed 813 selfloop flow, removed 65 redundant places. [2023-08-24 18:24:00,360 INFO L231 Difference]: Finished difference. Result has 920 places, 1185 transitions, 29908 flow [2023-08-24 18:24:00,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=25548, PETRI_DIFFERENCE_MINUEND_PLACES=820, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=29908, PETRI_PLACES=920, PETRI_TRANSITIONS=1185} [2023-08-24 18:24:00,361 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 896 predicate places. [2023-08-24 18:24:00,361 INFO L495 AbstractCegarLoop]: Abstraction has has 920 places, 1185 transitions, 29908 flow [2023-08-24 18:24:00,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 57.21568627450981) internal successors, (2918), 51 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:24:00,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:24:00,362 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:24:00,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-24 18:24:00,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:24:00,562 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:24:00,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:24:00,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1316440288, now seen corresponding path program 22 times [2023-08-24 18:24:00,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:24:00,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467384183] [2023-08-24 18:24:00,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:24:00,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:24:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:24:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:24:01,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:24:01,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467384183] [2023-08-24 18:24:01,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467384183] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:24:01,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705549521] [2023-08-24 18:24:01,340 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 18:24:01,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:24:01,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:24:01,341 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:24:01,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-24 18:24:01,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 18:24:01,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:24:01,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-24 18:24:01,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:24:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:24:01,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:24:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:24:01,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705549521] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:24:01,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:24:01,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 42 [2023-08-24 18:24:01,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962780950] [2023-08-24 18:24:01,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:24:01,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-08-24 18:24:01,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:24:01,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-08-24 18:24:01,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=1426, Unknown=0, NotChecked=0, Total=1892 [2023-08-24 18:24:01,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:24:01,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 920 places, 1185 transitions, 29908 flow. Second operand has 44 states, 44 states have (on average 57.09090909090909) internal successors, (2512), 44 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:24:01,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:24:01,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:24:01,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:24:09,559 INFO L124 PetriNetUnfolderBase]: 4716/8891 cut-off events. [2023-08-24 18:24:09,559 INFO L125 PetriNetUnfolderBase]: For 5542193/5542193 co-relation queries the response was YES. [2023-08-24 18:24:09,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185123 conditions, 8891 events. 4716/8891 cut-off events. For 5542193/5542193 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 56667 event pairs, 107 based on Foata normal form. 8/8899 useless extension candidates. Maximal degree in co-relation 184776. Up to 3250 conditions per place. [2023-08-24 18:24:09,796 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 197 selfloop transitions, 1111 changer transitions 155/1463 dead transitions. [2023-08-24 18:24:09,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1003 places, 1463 transitions, 47205 flow [2023-08-24 18:24:09,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-08-24 18:24:09,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2023-08-24 18:24:09,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 5091 transitions. [2023-08-24 18:24:09,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388507326007326 [2023-08-24 18:24:09,801 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 5091 transitions. [2023-08-24 18:24:09,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 5091 transitions. [2023-08-24 18:24:09,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:24:09,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 5091 transitions. [2023-08-24 18:24:09,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 60.607142857142854) internal successors, (5091), 84 states have internal predecessors, (5091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:24:09,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 156.0) internal successors, (13260), 85 states have internal predecessors, (13260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:24:09,815 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 156.0) internal successors, (13260), 85 states have internal predecessors, (13260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:24:09,815 INFO L175 Difference]: Start difference. First operand has 920 places, 1185 transitions, 29908 flow. Second operand 84 states and 5091 transitions. [2023-08-24 18:24:09,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1003 places, 1463 transitions, 47205 flow [2023-08-24 18:24:24,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 925 places, 1463 transitions, 42638 flow, removed 1298 selfloop flow, removed 78 redundant places. [2023-08-24 18:24:24,804 INFO L231 Difference]: Finished difference. Result has 929 places, 1207 transitions, 29944 flow [2023-08-24 18:24:24,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=26419, PETRI_DIFFERENCE_MINUEND_PLACES=842, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1089, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=29944, PETRI_PLACES=929, PETRI_TRANSITIONS=1207} [2023-08-24 18:24:24,805 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 905 predicate places. [2023-08-24 18:24:24,806 INFO L495 AbstractCegarLoop]: Abstraction has has 929 places, 1207 transitions, 29944 flow [2023-08-24 18:24:24,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 57.09090909090909) internal successors, (2512), 44 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:24:24,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:24:24,806 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:24:24,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-24 18:24:25,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:24:25,007 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:24:25,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:24:25,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2115354674, now seen corresponding path program 23 times [2023-08-24 18:24:25,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:24:25,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735709024] [2023-08-24 18:24:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:24:25,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:24:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:24:25,775 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:24:25,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:24:25,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735709024] [2023-08-24 18:24:25,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735709024] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:24:25,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542971668] [2023-08-24 18:24:25,776 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 18:24:25,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:24:25,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:24:25,777 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:24:25,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-24 18:24:25,880 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-08-24 18:24:25,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:24:25,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-24 18:24:25,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:24:25,956 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:24:25,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:24:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:24:26,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542971668] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:24:26,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:24:26,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2023-08-24 18:24:26,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755634590] [2023-08-24 18:24:26,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:24:26,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-08-24 18:24:26,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:24:26,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-08-24 18:24:26,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=1511, Unknown=0, NotChecked=0, Total=1980 [2023-08-24 18:24:26,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:24:26,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 929 places, 1207 transitions, 29944 flow. Second operand has 45 states, 45 states have (on average 57.111111111111114) internal successors, (2570), 45 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:24:26,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:24:26,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:24:26,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:24:34,420 INFO L124 PetriNetUnfolderBase]: 4708/8879 cut-off events. [2023-08-24 18:24:34,421 INFO L125 PetriNetUnfolderBase]: For 5430307/5430307 co-relation queries the response was YES. [2023-08-24 18:24:34,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181164 conditions, 8879 events. 4708/8879 cut-off events. For 5430307/5430307 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 56591 event pairs, 98 based on Foata normal form. 8/8887 useless extension candidates. Maximal degree in co-relation 180816. Up to 3234 conditions per place. [2023-08-24 18:24:34,651 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 192 selfloop transitions, 1114 changer transitions 164/1470 dead transitions. [2023-08-24 18:24:34,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 1470 transitions, 45319 flow [2023-08-24 18:24:34,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-08-24 18:24:34,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2023-08-24 18:24:34,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 5155 transitions. [2023-08-24 18:24:34,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388763197586727 [2023-08-24 18:24:34,655 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 5155 transitions. [2023-08-24 18:24:34,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 5155 transitions. [2023-08-24 18:24:34,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:24:34,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 5155 transitions. [2023-08-24 18:24:34,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 60.64705882352941) internal successors, (5155), 85 states have internal predecessors, (5155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:24:34,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 156.0) internal successors, (13416), 86 states have internal predecessors, (13416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:24:34,666 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 156.0) internal successors, (13416), 86 states have internal predecessors, (13416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:24:34,667 INFO L175 Difference]: Start difference. First operand has 929 places, 1207 transitions, 29944 flow. Second operand 85 states and 5155 transitions. [2023-08-24 18:24:34,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 1470 transitions, 45319 flow [2023-08-24 18:24:49,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 944 places, 1470 transitions, 42763 flow, removed 427 selfloop flow, removed 69 redundant places. [2023-08-24 18:24:49,421 INFO L231 Difference]: Finished difference. Result has 946 places, 1209 transitions, 29863 flow [2023-08-24 18:24:49,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=27388, PETRI_DIFFERENCE_MINUEND_PLACES=860, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=29863, PETRI_PLACES=946, PETRI_TRANSITIONS=1209} [2023-08-24 18:24:49,423 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 922 predicate places. [2023-08-24 18:24:49,423 INFO L495 AbstractCegarLoop]: Abstraction has has 946 places, 1209 transitions, 29863 flow [2023-08-24 18:24:49,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 57.111111111111114) internal successors, (2570), 45 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:24:49,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:24:49,424 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:24:49,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-24 18:24:49,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-24 18:24:49,629 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:24:49,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:24:49,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2140562876, now seen corresponding path program 24 times [2023-08-24 18:24:49,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:24:49,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649213434] [2023-08-24 18:24:49,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:24:49,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:24:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:24:49,952 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 380 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:24:49,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:24:49,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649213434] [2023-08-24 18:24:49,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649213434] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:24:49,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257413137] [2023-08-24 18:24:49,952 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 18:24:49,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:24:49,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:24:49,957 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:24:49,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-24 18:24:50,094 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2023-08-24 18:24:50,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:24:50,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-24 18:24:50,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:24:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:24:50,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 18:24:50,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257413137] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:24:50,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 18:24:50,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2023-08-24 18:24:50,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065279551] [2023-08-24 18:24:50,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:24:50,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-24 18:24:50,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:24:50,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-24 18:24:50,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2023-08-24 18:24:50,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 156 [2023-08-24 18:24:50,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 946 places, 1209 transitions, 29863 flow. Second operand has 23 states, 23 states have (on average 57.130434782608695) internal successors, (1314), 23 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:24:50,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:24:50,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 156 [2023-08-24 18:24:50,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:25:36,443 INFO L124 PetriNetUnfolderBase]: 48105/73385 cut-off events. [2023-08-24 18:25:36,443 INFO L125 PetriNetUnfolderBase]: For 48263889/48263889 co-relation queries the response was YES. [2023-08-24 18:25:42,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1471812 conditions, 73385 events. 48105/73385 cut-off events. For 48263889/48263889 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 513501 event pairs, 528 based on Foata normal form. 1978/75363 useless extension candidates. Maximal degree in co-relation 1471462. Up to 25549 conditions per place. [2023-08-24 18:25:42,972 INFO L140 encePairwiseOnDemand]: 153/156 looper letters, 74 selfloop transitions, 28 changer transitions 14053/14155 dead transitions. [2023-08-24 18:25:42,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 958 places, 14155 transitions, 373499 flow [2023-08-24 18:25:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-24 18:25:42,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-24 18:25:42,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1444 transitions. [2023-08-24 18:25:42,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40245261984392416 [2023-08-24 18:25:42,974 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1444 transitions. [2023-08-24 18:25:42,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1444 transitions. [2023-08-24 18:25:42,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:25:42,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1444 transitions. [2023-08-24 18:25:42,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 62.78260869565217) internal successors, (1444), 23 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:25:42,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 156.0) internal successors, (3744), 24 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:25:42,977 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 156.0) internal successors, (3744), 24 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:25:42,977 INFO L175 Difference]: Start difference. First operand has 946 places, 1209 transitions, 29863 flow. Second operand 23 states and 1444 transitions. [2023-08-24 18:25:42,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 958 places, 14155 transitions, 373499 flow [2023-08-24 18:27:26,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 852 places, 14155 transitions, 345355 flow, removed 313 selfloop flow, removed 106 redundant places. [2023-08-24 18:27:27,035 INFO L231 Difference]: Finished difference. Result has 852 places, 73 transitions, 1210 flow [2023-08-24 18:27:27,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=25576, PETRI_DIFFERENCE_MINUEND_PLACES=830, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1210, PETRI_PLACES=852, PETRI_TRANSITIONS=73} [2023-08-24 18:27:27,038 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 828 predicate places. [2023-08-24 18:27:27,038 INFO L495 AbstractCegarLoop]: Abstraction has has 852 places, 73 transitions, 1210 flow [2023-08-24 18:27:27,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 57.130434782608695) internal successors, (1314), 23 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:27:27,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:27:27,039 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:27:27,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-24 18:27:27,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-24 18:27:27,244 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:27:27,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:27:27,245 INFO L85 PathProgramCache]: Analyzing trace with hash 440581829, now seen corresponding path program 25 times [2023-08-24 18:27:27,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:27:27,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275208099] [2023-08-24 18:27:27,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:27:27,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:27:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:27:27,572 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 380 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:27:27,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:27:27,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275208099] [2023-08-24 18:27:27,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275208099] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:27:27,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579916166] [2023-08-24 18:27:27,572 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 18:27:27,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:27:27,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:27:27,574 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:27:27,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-24 18:27:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:27:27,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-24 18:27:27,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:27:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:27:27,757 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 18:27:27,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579916166] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:27:27,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 18:27:27,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2023-08-24 18:27:27,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534956399] [2023-08-24 18:27:27,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:27:27,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-24 18:27:27,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:27:27,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-24 18:27:27,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2023-08-24 18:27:27,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 156 [2023-08-24 18:27:27,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 852 places, 73 transitions, 1210 flow. Second operand has 23 states, 23 states have (on average 57.130434782608695) internal successors, (1314), 23 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:27:27,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:27:27,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 156 [2023-08-24 18:27:27,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:27:28,307 INFO L124 PetriNetUnfolderBase]: 877/1569 cut-off events. [2023-08-24 18:27:28,307 INFO L125 PetriNetUnfolderBase]: For 185723/185723 co-relation queries the response was YES. [2023-08-24 18:27:28,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13246 conditions, 1569 events. 877/1569 cut-off events. For 185723/185723 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6218 event pairs, 4 based on Foata normal form. 54/1623 useless extension candidates. Maximal degree in co-relation 12921. Up to 668 conditions per place. [2023-08-24 18:27:28,340 INFO L140 encePairwiseOnDemand]: 153/156 looper letters, 0 selfloop transitions, 0 changer transitions 797/797 dead transitions. [2023-08-24 18:27:28,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 797 transitions, 12529 flow [2023-08-24 18:27:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-24 18:27:28,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-24 18:27:28,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1357 transitions. [2023-08-24 18:27:28,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782051282051282 [2023-08-24 18:27:28,341 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1357 transitions. [2023-08-24 18:27:28,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1357 transitions. [2023-08-24 18:27:28,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:27:28,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1357 transitions. [2023-08-24 18:27:28,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 59.0) internal successors, (1357), 23 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:27:28,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 156.0) internal successors, (3744), 24 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:27:28,344 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 156.0) internal successors, (3744), 24 states have internal predecessors, (3744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:27:28,344 INFO L175 Difference]: Start difference. First operand has 852 places, 73 transitions, 1210 flow. Second operand 23 states and 1357 transitions. [2023-08-24 18:27:28,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 797 transitions, 12529 flow [2023-08-24 18:27:28,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 797 transitions, 6300 flow, removed 1261 selfloop flow, removed 159 redundant places. [2023-08-24 18:27:28,520 INFO L231 Difference]: Finished difference. Result has 317 places, 0 transitions, 0 flow [2023-08-24 18:27:28,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=317, PETRI_TRANSITIONS=0} [2023-08-24 18:27:28,521 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 293 predicate places. [2023-08-24 18:27:28,521 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 0 transitions, 0 flow [2023-08-24 18:27:28,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 57.130434782608695) internal successors, (1314), 23 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:27:28,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 13 remaining) [2023-08-24 18:27:28,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-08-24 18:27:28,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (10 of 13 remaining) [2023-08-24 18:27:28,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 13 remaining) [2023-08-24 18:27:28,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2023-08-24 18:27:28,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-08-24 18:27:28,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-08-24 18:27:28,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-08-24 18:27:28,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-08-24 18:27:28,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-08-24 18:27:28,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-08-24 18:27:28,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-08-24 18:27:28,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-08-24 18:27:28,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-24 18:27:28,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:27:28,729 INFO L445 BasicCegarLoop]: Path program histogram: [25, 2, 1, 1, 1] [2023-08-24 18:27:28,734 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 18:27:28,735 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 18:27:28,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 06:27:28 BasicIcfg [2023-08-24 18:27:28,740 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 18:27:28,743 INFO L158 Benchmark]: Toolchain (without parser) took 408837.19ms. Allocated memory was 362.8MB in the beginning and 13.9GB in the end (delta: 13.5GB). Free memory was 337.7MB in the beginning and 7.8GB in the end (delta: -7.5GB). Peak memory consumption was 6.1GB. Max. memory is 16.0GB. [2023-08-24 18:27:28,744 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 362.8MB. Free memory is still 339.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 18:27:28,744 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.71ms. Allocated memory is still 362.8MB. Free memory was 337.7MB in the beginning and 318.3MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 18:27:28,744 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.57ms. Allocated memory is still 362.8MB. Free memory was 318.3MB in the beginning and 316.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 18:27:28,744 INFO L158 Benchmark]: Boogie Preprocessor took 35.21ms. Allocated memory is still 362.8MB. Free memory was 316.3MB in the beginning and 314.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 18:27:28,744 INFO L158 Benchmark]: RCFGBuilder took 452.04ms. Allocated memory is still 362.8MB. Free memory was 314.7MB in the beginning and 298.5MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 18:27:28,745 INFO L158 Benchmark]: TraceAbstraction took 407898.72ms. Allocated memory was 362.8MB in the beginning and 13.9GB in the end (delta: 13.5GB). Free memory was 297.9MB in the beginning and 7.8GB in the end (delta: -7.5GB). Peak memory consumption was 6.0GB. Max. memory is 16.0GB. [2023-08-24 18:27:28,746 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 362.8MB. Free memory is still 339.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 390.71ms. Allocated memory is still 362.8MB. Free memory was 337.7MB in the beginning and 318.3MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.57ms. Allocated memory is still 362.8MB. Free memory was 318.3MB in the beginning and 316.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.21ms. Allocated memory is still 362.8MB. Free memory was 316.3MB in the beginning and 314.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 452.04ms. Allocated memory is still 362.8MB. Free memory was 314.7MB in the beginning and 298.5MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 407898.72ms. Allocated memory was 362.8MB in the beginning and 13.9GB in the end (delta: 13.5GB). Free memory was 297.9MB in the beginning and 7.8GB in the end (delta: -7.5GB). Peak memory consumption was 6.0GB. 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: 407.8s, OverallIterations: 30, TraceHistogramMax: 21, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 373.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15852 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15852 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1363 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9318 IncrementalHoareTripleChecker+Invalid, 10681 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1363 mSolverCounterUnsat, 0 mSDtfsCounter, 9318 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3082 GetRequests, 862 SyntacticMatches, 378 SemanticMatches, 1842 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60909 ImplicationChecksByTransitivity, 35.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29944occurred in iteration=27, InterpolantAutomatonStates: 1199, 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: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 24.8s InterpolantComputationTime, 1626 NumberOfCodeBlocks, 1625 NumberOfCodeBlocksAsserted, 202 NumberOfCheckSat, 2237 ConstructedInterpolants, 0 QuantifiedInterpolants, 10057 SizeOfPredicates, 516 NumberOfNonLiveVariables, 6736 ConjunctsInSsa, 682 ConjunctsInUnsatCore, 72 InterpolantComputations, 10 PerfectInterpolantSequences, 1584/14479 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! [2023-08-24 18:27:28,759 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...