/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/test-context1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 10:57:54,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 10:57:55,016 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 [2023-08-26 10:57:55,021 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 10:57:55,021 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 10:57:55,053 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 10:57:55,053 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 10:57:55,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 10:57:55,054 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 10:57:55,058 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 10:57:55,058 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 10:57:55,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 10:57:55,058 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 10:57:55,060 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 10:57:55,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 10:57:55,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 10:57:55,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 10:57:55,060 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 10:57:55,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 10:57:55,061 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 10:57:55,061 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 10:57:55,062 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 10:57:55,062 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 10:57:55,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 10:57:55,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 10:57:55,063 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 10:57:55,063 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 10:57:55,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 10:57:55,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 10:57:55,064 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 10:57:55,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 10:57:55,065 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 10:57:55,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 10:57:55,065 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 10:57:55,065 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 10:57:55,065 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 10:57:55,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 10:57:55,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 10:57:55,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 10:57:55,383 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 10:57:55,385 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 10:57:55,386 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2023-08-26 10:57:56,538 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 10:57:56,757 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 10:57:56,758 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2023-08-26 10:57:56,764 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e4147e31/1151345115874cb79cb4fc479bab4454/FLAGe3773280e [2023-08-26 10:57:56,774 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e4147e31/1151345115874cb79cb4fc479bab4454 [2023-08-26 10:57:56,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 10:57:56,778 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 10:57:56,779 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 10:57:56,779 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 10:57:56,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 10:57:56,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:57:56" (1/1) ... [2023-08-26 10:57:56,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30255af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:56, skipping insertion in model container [2023-08-26 10:57:56,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:57:56" (1/1) ... [2023-08-26 10:57:56,801 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 10:57:57,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 10:57:57,024 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 10:57:57,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 10:57:57,060 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 10:57:57,061 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 10:57:57,066 INFO L206 MainTranslator]: Completed translation [2023-08-26 10:57:57,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:57 WrapperNode [2023-08-26 10:57:57,067 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 10:57:57,068 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 10:57:57,068 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 10:57:57,068 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 10:57:57,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:57" (1/1) ... [2023-08-26 10:57:57,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:57" (1/1) ... [2023-08-26 10:57:57,132 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 239 [2023-08-26 10:57:57,133 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 10:57:57,133 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 10:57:57,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 10:57:57,133 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 10:57:57,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:57" (1/1) ... [2023-08-26 10:57:57,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:57" (1/1) ... [2023-08-26 10:57:57,156 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:57" (1/1) ... [2023-08-26 10:57:57,156 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:57" (1/1) ... [2023-08-26 10:57:57,169 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:57" (1/1) ... [2023-08-26 10:57:57,173 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:57" (1/1) ... [2023-08-26 10:57:57,175 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:57" (1/1) ... [2023-08-26 10:57:57,176 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:57" (1/1) ... [2023-08-26 10:57:57,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 10:57:57,193 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 10:57:57,193 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 10:57:57,193 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 10:57:57,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:57" (1/1) ... [2023-08-26 10:57:57,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 10:57:57,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:57:57,222 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) [2023-08-26 10:57:57,249 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 [2023-08-26 10:57:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 10:57:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 10:57:57,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 10:57:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 10:57:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 10:57:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 10:57:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 10:57:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 10:57:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 10:57:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 10:57:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 10:57:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 10:57:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 10:57:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 10:57:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 10:57:57,266 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 10:57:57,383 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 10:57:57,384 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 10:57:57,745 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 10:57:58,009 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 10:57:58,009 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-26 10:57:58,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:57:58 BoogieIcfgContainer [2023-08-26 10:57:58,011 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 10:57:58,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 10:57:58,013 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 10:57:58,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 10:57:58,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:57:56" (1/3) ... [2023-08-26 10:57:58,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a6bf77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:57:58, skipping insertion in model container [2023-08-26 10:57:58,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:57:57" (2/3) ... [2023-08-26 10:57:58,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a6bf77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:57:58, skipping insertion in model container [2023-08-26 10:57:58,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:57:58" (3/3) ... [2023-08-26 10:57:58,018 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2023-08-26 10:57:58,032 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 10:57:58,033 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-26 10:57:58,033 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 10:57:58,117 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 10:57:58,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 176 transitions, 368 flow [2023-08-26 10:57:58,240 INFO L124 PetriNetUnfolderBase]: 9/174 cut-off events. [2023-08-26 10:57:58,240 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 10:57:58,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 174 events. 9/174 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 227 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2023-08-26 10:57:58,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 176 transitions, 368 flow [2023-08-26 10:57:58,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 165 transitions, 342 flow [2023-08-26 10:57:58,259 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 10:57:58,271 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 165 transitions, 342 flow [2023-08-26 10:57:58,275 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 165 transitions, 342 flow [2023-08-26 10:57:58,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 165 transitions, 342 flow [2023-08-26 10:57:58,319 INFO L124 PetriNetUnfolderBase]: 9/165 cut-off events. [2023-08-26 10:57:58,319 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 10:57:58,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 165 events. 9/165 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 225 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2023-08-26 10:57:58,322 INFO L119 LiptonReduction]: Number of co-enabled transitions 2196 [2023-08-26 10:58:03,463 INFO L134 LiptonReduction]: Checked pairs total: 7532 [2023-08-26 10:58:03,463 INFO L136 LiptonReduction]: Total number of compositions: 190 [2023-08-26 10:58:03,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 10:58:03,488 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;@8dea31b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 10:58:03,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2023-08-26 10:58:03,490 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 10:58:03,490 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 10:58:03,490 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 10:58:03,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:03,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 10:58:03,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:03,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:03,497 INFO L85 PathProgramCache]: Analyzing trace with hash 952, now seen corresponding path program 1 times [2023-08-26 10:58:03,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:03,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897185902] [2023-08-26 10:58:03,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:03,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:58:03,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:03,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897185902] [2023-08-26 10:58:03,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897185902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:58:03,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:58:03,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 10:58:03,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297310504] [2023-08-26 10:58:03,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:58:03,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 10:58:03,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 10:58:03,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 10:58:03,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 366 [2023-08-26 10:58:03,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 120 flow. Second operand has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:03,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:03,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 366 [2023-08-26 10:58:03,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:03,681 INFO L124 PetriNetUnfolderBase]: 22/72 cut-off events. [2023-08-26 10:58:03,681 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-26 10:58:03,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 72 events. 22/72 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 9 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 80. Up to 43 conditions per place. [2023-08-26 10:58:03,684 INFO L140 encePairwiseOnDemand]: 337/366 looper letters, 15 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-08-26 10:58:03,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 92 flow [2023-08-26 10:58:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 10:58:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 10:58:03,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 324 transitions. [2023-08-26 10:58:03,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4426229508196721 [2023-08-26 10:58:03,704 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 324 transitions. [2023-08-26 10:58:03,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 324 transitions. [2023-08-26 10:58:03,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:03,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 324 transitions. [2023-08-26 10:58:03,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 162.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:03,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:03,720 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:03,721 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 120 flow. Second operand 2 states and 324 transitions. [2023-08-26 10:58:03,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 92 flow [2023-08-26 10:58:03,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 84 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:58:03,726 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 54 flow [2023-08-26 10:58:03,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2023-08-26 10:58:03,731 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -32 predicate places. [2023-08-26 10:58:03,731 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 54 flow [2023-08-26 10:58:03,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:03,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:03,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:03,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 10:58:03,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:03,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:03,740 INFO L85 PathProgramCache]: Analyzing trace with hash -978157094, now seen corresponding path program 1 times [2023-08-26 10:58:03,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:03,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736262701] [2023-08-26 10:58:03,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:03,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:04,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:58:04,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:04,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736262701] [2023-08-26 10:58:04,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736262701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:58:04,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:58:04,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:58:04,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975734986] [2023-08-26 10:58:04,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:58:04,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:58:04,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:04,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:58:04,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:58:04,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 366 [2023-08-26 10:58:04,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 54 flow. Second operand has 6 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:04,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:04,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 366 [2023-08-26 10:58:04,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:04,441 INFO L124 PetriNetUnfolderBase]: 64/110 cut-off events. [2023-08-26 10:58:04,441 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 10:58:04,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 110 events. 64/110 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 148 event pairs, 3 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 223. Up to 54 conditions per place. [2023-08-26 10:58:04,442 INFO L140 encePairwiseOnDemand]: 361/366 looper letters, 36 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-26 10:58:04,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 40 transitions, 164 flow [2023-08-26 10:58:04,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:58:04,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:58:04,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 737 transitions. [2023-08-26 10:58:04,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3356102003642987 [2023-08-26 10:58:04,445 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 737 transitions. [2023-08-26 10:58:04,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 737 transitions. [2023-08-26 10:58:04,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:04,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 737 transitions. [2023-08-26 10:58:04,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:04,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 366.0) internal successors, (2562), 7 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:04,453 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 366.0) internal successors, (2562), 7 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:04,453 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 54 flow. Second operand 6 states and 737 transitions. [2023-08-26 10:58:04,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 40 transitions, 164 flow [2023-08-26 10:58:04,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 10:58:04,455 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 60 flow [2023-08-26 10:58:04,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-26 10:58:04,456 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -28 predicate places. [2023-08-26 10:58:04,456 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 60 flow [2023-08-26 10:58:04,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:04,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:04,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:04,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 10:58:04,457 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:04,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:04,457 INFO L85 PathProgramCache]: Analyzing trace with hash 709878886, now seen corresponding path program 1 times [2023-08-26 10:58:04,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:04,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123075197] [2023-08-26 10:58:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:04,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:04,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:58:04,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:04,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123075197] [2023-08-26 10:58:04,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123075197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:58:04,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:58:04,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 10:58:04,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447310451] [2023-08-26 10:58:04,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:58:04,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 10:58:04,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:04,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 10:58:04,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 10:58:04,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 366 [2023-08-26 10:58:04,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 60 flow. Second operand has 6 states, 6 states have (on average 118.83333333333333) internal successors, (713), 6 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:04,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:04,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 366 [2023-08-26 10:58:04,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:04,894 INFO L124 PetriNetUnfolderBase]: 62/106 cut-off events. [2023-08-26 10:58:04,895 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 10:58:04,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 106 events. 62/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 140 event pairs, 24 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 231. Up to 85 conditions per place. [2023-08-26 10:58:04,896 INFO L140 encePairwiseOnDemand]: 361/366 looper letters, 27 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2023-08-26 10:58:04,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 136 flow [2023-08-26 10:58:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:58:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:58:04,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 728 transitions. [2023-08-26 10:58:04,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.331511839708561 [2023-08-26 10:58:04,899 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 728 transitions. [2023-08-26 10:58:04,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 728 transitions. [2023-08-26 10:58:04,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:04,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 728 transitions. [2023-08-26 10:58:04,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:04,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 366.0) internal successors, (2562), 7 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:04,906 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 366.0) internal successors, (2562), 7 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:04,906 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 60 flow. Second operand 6 states and 728 transitions. [2023-08-26 10:58:04,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 136 flow [2023-08-26 10:58:04,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 129 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:58:04,907 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 59 flow [2023-08-26 10:58:04,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=59, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-26 10:58:04,909 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -28 predicate places. [2023-08-26 10:58:04,909 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 59 flow [2023-08-26 10:58:04,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.83333333333333) internal successors, (713), 6 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:04,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:04,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:04,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 10:58:04,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:04,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:04,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1456583177, now seen corresponding path program 1 times [2023-08-26 10:58:04,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:04,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654592053] [2023-08-26 10:58:04,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:04,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:58:05,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:05,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654592053] [2023-08-26 10:58:05,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654592053] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:58:05,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:58:05,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 10:58:05,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083355694] [2023-08-26 10:58:05,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:58:05,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 10:58:05,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:05,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 10:58:05,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 10:58:05,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 366 [2023-08-26 10:58:05,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:05,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:05,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 366 [2023-08-26 10:58:05,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:05,078 INFO L124 PetriNetUnfolderBase]: 38/103 cut-off events. [2023-08-26 10:58:05,078 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 10:58:05,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 103 events. 38/103 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 235 event pairs, 11 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 197. Up to 37 conditions per place. [2023-08-26 10:58:05,079 INFO L140 encePairwiseOnDemand]: 363/366 looper letters, 19 selfloop transitions, 2 changer transitions 2/31 dead transitions. [2023-08-26 10:58:05,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 125 flow [2023-08-26 10:58:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 10:58:05,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 10:58:05,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-08-26 10:58:05,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39617486338797814 [2023-08-26 10:58:05,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-08-26 10:58:05,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-08-26 10:58:05,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:05,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-08-26 10:58:05,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:05,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:05,085 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:05,085 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 59 flow. Second operand 3 states and 435 transitions. [2023-08-26 10:58:05,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 125 flow [2023-08-26 10:58:05,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 116 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 10:58:05,087 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 64 flow [2023-08-26 10:58:05,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-08-26 10:58:05,089 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -29 predicate places. [2023-08-26 10:58:05,089 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 64 flow [2023-08-26 10:58:05,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:05,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:05,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:05,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 10:58:05,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:05,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:05,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2127394784, now seen corresponding path program 1 times [2023-08-26 10:58:05,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:05,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992949353] [2023-08-26 10:58:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:05,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:58:05,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:05,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992949353] [2023-08-26 10:58:05,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992949353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:58:05,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:58:05,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 10:58:05,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949665655] [2023-08-26 10:58:05,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:58:05,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 10:58:05,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:05,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 10:58:05,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 10:58:05,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 366 [2023-08-26 10:58:05,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:05,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:05,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 366 [2023-08-26 10:58:05,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:05,210 INFO L124 PetriNetUnfolderBase]: 52/142 cut-off events. [2023-08-26 10:58:05,214 INFO L125 PetriNetUnfolderBase]: For 20/26 co-relation queries the response was YES. [2023-08-26 10:58:05,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 142 events. 52/142 cut-off events. For 20/26 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 431 event pairs, 17 based on Foata normal form. 8/131 useless extension candidates. Maximal degree in co-relation 279. Up to 74 conditions per place. [2023-08-26 10:58:05,217 INFO L140 encePairwiseOnDemand]: 363/366 looper letters, 18 selfloop transitions, 2 changer transitions 5/33 dead transitions. [2023-08-26 10:58:05,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 33 transitions, 135 flow [2023-08-26 10:58:05,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 10:58:05,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 10:58:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-08-26 10:58:05,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40255009107468126 [2023-08-26 10:58:05,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-08-26 10:58:05,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-08-26 10:58:05,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:05,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-08-26 10:58:05,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:05,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:05,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:05,224 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 64 flow. Second operand 3 states and 442 transitions. [2023-08-26 10:58:05,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 33 transitions, 135 flow [2023-08-26 10:58:05,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 133 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 10:58:05,226 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 74 flow [2023-08-26 10:58:05,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-26 10:58:05,228 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -27 predicate places. [2023-08-26 10:58:05,228 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 74 flow [2023-08-26 10:58:05,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:05,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:05,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:05,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 10:58:05,229 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:05,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:05,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1438032962, now seen corresponding path program 1 times [2023-08-26 10:58:05,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:05,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995496333] [2023-08-26 10:58:05,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:05,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:05,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:58:05,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:05,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995496333] [2023-08-26 10:58:05,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995496333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 10:58:05,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 10:58:05,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 10:58:05,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521934058] [2023-08-26 10:58:05,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 10:58:05,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 10:58:05,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:05,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 10:58:05,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 10:58:05,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 366 [2023-08-26 10:58:05,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:05,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:05,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 366 [2023-08-26 10:58:05,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:05,473 INFO L124 PetriNetUnfolderBase]: 61/210 cut-off events. [2023-08-26 10:58:05,473 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-26 10:58:05,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 210 events. 61/210 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 833 event pairs, 44 based on Foata normal form. 6/212 useless extension candidates. Maximal degree in co-relation 411. Up to 103 conditions per place. [2023-08-26 10:58:05,474 INFO L140 encePairwiseOnDemand]: 362/366 looper letters, 16 selfloop transitions, 2 changer transitions 10/36 dead transitions. [2023-08-26 10:58:05,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 156 flow [2023-08-26 10:58:05,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 10:58:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 10:58:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2023-08-26 10:58:05,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33811475409836067 [2023-08-26 10:58:05,477 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 495 transitions. [2023-08-26 10:58:05,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 495 transitions. [2023-08-26 10:58:05,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:05,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 495 transitions. [2023-08-26 10:58:05,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:05,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:05,481 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:05,481 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 74 flow. Second operand 4 states and 495 transitions. [2023-08-26 10:58:05,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 156 flow [2023-08-26 10:58:05,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 10:58:05,483 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 86 flow [2023-08-26 10:58:05,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-08-26 10:58:05,486 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -23 predicate places. [2023-08-26 10:58:05,487 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 86 flow [2023-08-26 10:58:05,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:05,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:05,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:05,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 10:58:05,487 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:05,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:05,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1262716117, now seen corresponding path program 1 times [2023-08-26 10:58:05,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:05,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116117515] [2023-08-26 10:58:05,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:05,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:58:06,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:06,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116117515] [2023-08-26 10:58:06,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116117515] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:58:06,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584429633] [2023-08-26 10:58:06,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:06,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:06,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:58:06,073 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) [2023-08-26 10:58:06,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 10:58:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:06,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-26 10:58:06,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:58:06,290 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 10:58:06,320 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 10:58:06,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:58:06,395 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 10:58:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:58:06,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:58:06,496 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_248) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))) 5)) is different from false [2023-08-26 10:58:06,558 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int)) (v_ArrVal_247 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_247)) (.cse1 (* c_~front~0 4))) (or (not (= 5 (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* c_~size~0 4) .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_248) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5)))) is different from false [2023-08-26 10:58:06,568 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:58:06,569 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 48 [2023-08-26 10:58:06,581 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:58:06,581 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 165 [2023-08-26 10:58:06,593 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:58:06,593 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 48 [2023-08-26 10:58:06,643 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-08-26 10:58:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-08-26 10:58:06,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584429633] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:58:06,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:58:06,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-08-26 10:58:06,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997872471] [2023-08-26 10:58:06,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:58:06,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 10:58:06,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:06,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 10:58:06,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=142, Unknown=2, NotChecked=50, Total=240 [2023-08-26 10:58:06,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 366 [2023-08-26 10:58:06,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 86 flow. Second operand has 16 states, 16 states have (on average 94.8125) internal successors, (1517), 16 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:06,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:06,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 366 [2023-08-26 10:58:06,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:06,950 INFO L124 PetriNetUnfolderBase]: 216/376 cut-off events. [2023-08-26 10:58:06,950 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2023-08-26 10:58:06,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 376 events. 216/376 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1244 event pairs, 29 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 927. Up to 113 conditions per place. [2023-08-26 10:58:06,952 INFO L140 encePairwiseOnDemand]: 361/366 looper letters, 55 selfloop transitions, 5 changer transitions 13/73 dead transitions. [2023-08-26 10:58:06,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 73 transitions, 345 flow [2023-08-26 10:58:06,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:58:06,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:58:06,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 626 transitions. [2023-08-26 10:58:06,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28506375227686703 [2023-08-26 10:58:06,955 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 626 transitions. [2023-08-26 10:58:06,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 626 transitions. [2023-08-26 10:58:06,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:06,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 626 transitions. [2023-08-26 10:58:06,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.33333333333333) internal successors, (626), 6 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:06,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 366.0) internal successors, (2562), 7 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:06,960 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 366.0) internal successors, (2562), 7 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:06,960 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 86 flow. Second operand 6 states and 626 transitions. [2023-08-26 10:58:06,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 73 transitions, 345 flow [2023-08-26 10:58:06,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 73 transitions, 339 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-26 10:58:06,962 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 100 flow [2023-08-26 10:58:06,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2023-08-26 10:58:06,962 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -20 predicate places. [2023-08-26 10:58:06,962 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 100 flow [2023-08-26 10:58:06,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 94.8125) internal successors, (1517), 16 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:06,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:06,963 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:06,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 10:58:07,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:07,170 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:07,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:07,170 INFO L85 PathProgramCache]: Analyzing trace with hash 511953232, now seen corresponding path program 2 times [2023-08-26 10:58:07,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:07,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828183231] [2023-08-26 10:58:07,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:07,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:07,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:58:07,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:07,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828183231] [2023-08-26 10:58:07,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828183231] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:58:07,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940942275] [2023-08-26 10:58:07,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:58:07,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:07,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:58:07,268 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) [2023-08-26 10:58:07,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 10:58:07,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:58:07,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:58:07,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:58:07,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:58:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:58:07,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:58:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:58:07,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940942275] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:58:07,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:58:07,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2023-08-26 10:58:07,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660626673] [2023-08-26 10:58:07,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:58:07,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 10:58:07,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:07,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 10:58:07,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-08-26 10:58:07,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 366 [2023-08-26 10:58:07,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 100 flow. Second operand has 13 states, 13 states have (on average 120.23076923076923) internal successors, (1563), 13 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:07,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:07,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 366 [2023-08-26 10:58:07,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:07,838 INFO L124 PetriNetUnfolderBase]: 181/509 cut-off events. [2023-08-26 10:58:07,839 INFO L125 PetriNetUnfolderBase]: For 304/358 co-relation queries the response was YES. [2023-08-26 10:58:07,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1125 conditions, 509 events. 181/509 cut-off events. For 304/358 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2695 event pairs, 52 based on Foata normal form. 27/530 useless extension candidates. Maximal degree in co-relation 1117. Up to 111 conditions per place. [2023-08-26 10:58:07,841 INFO L140 encePairwiseOnDemand]: 361/366 looper letters, 34 selfloop transitions, 9 changer transitions 27/78 dead transitions. [2023-08-26 10:58:07,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 402 flow [2023-08-26 10:58:07,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 10:58:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 10:58:07,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1121 transitions. [2023-08-26 10:58:07,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3403157255616272 [2023-08-26 10:58:07,844 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1121 transitions. [2023-08-26 10:58:07,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1121 transitions. [2023-08-26 10:58:07,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:07,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1121 transitions. [2023-08-26 10:58:07,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 124.55555555555556) internal successors, (1121), 9 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:07,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 366.0) internal successors, (3660), 10 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:07,852 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 366.0) internal successors, (3660), 10 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:07,852 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 100 flow. Second operand 9 states and 1121 transitions. [2023-08-26 10:58:07,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 402 flow [2023-08-26 10:58:07,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 78 transitions, 386 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-26 10:58:07,855 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 172 flow [2023-08-26 10:58:07,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=172, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2023-08-26 10:58:07,857 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -11 predicate places. [2023-08-26 10:58:07,857 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 172 flow [2023-08-26 10:58:07,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 120.23076923076923) internal successors, (1563), 13 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:07,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:07,859 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:07,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 10:58:08,064 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,SelfDestructingSolverStorable7 [2023-08-26 10:58:08,065 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:08,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:08,065 INFO L85 PathProgramCache]: Analyzing trace with hash 66033041, now seen corresponding path program 3 times [2023-08-26 10:58:08,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:08,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520687205] [2023-08-26 10:58:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:08,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:58:08,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:08,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520687205] [2023-08-26 10:58:08,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520687205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:58:08,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428296445] [2023-08-26 10:58:08,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:58:08,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:08,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:58:08,623 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) [2023-08-26 10:58:08,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 10:58:08,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 10:58:08,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:58:08,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-26 10:58:08,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:58:09,042 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-26 10:58:09,073 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 10:58:09,104 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 10:58:09,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:58:09,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:58:09,409 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_479 (Array Int Int)) (v_ArrVal_480 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_479) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_480) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) (.cse1 (* c_~front~0 4))) (or (= 5 (select .cse0 (+ .cse1 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (not (= 5 (select .cse0 (+ (* c_~size~0 4) .cse1 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))))) is different from false [2023-08-26 10:58:09,418 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:58:09,419 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 53 [2023-08-26 10:58:09,435 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 10:58:09,435 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 340 treesize of output 301 [2023-08-26 10:58:09,446 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 10:58:09,447 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 88 [2023-08-26 10:58:09,455 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-26 10:58:09,455 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 67 [2023-08-26 10:58:09,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-08-26 10:58:09,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428296445] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:58:09,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:58:09,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 21 [2023-08-26 10:58:09,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326130757] [2023-08-26 10:58:09,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:58:09,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 10:58:09,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:09,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 10:58:09,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=365, Unknown=3, NotChecked=40, Total=506 [2023-08-26 10:58:09,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 366 [2023-08-26 10:58:09,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 172 flow. Second operand has 23 states, 23 states have (on average 94.1304347826087) internal successors, (2165), 23 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:09,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:09,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 366 [2023-08-26 10:58:09,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:10,731 INFO L124 PetriNetUnfolderBase]: 1424/2448 cut-off events. [2023-08-26 10:58:10,732 INFO L125 PetriNetUnfolderBase]: For 3418/3418 co-relation queries the response was YES. [2023-08-26 10:58:10,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7508 conditions, 2448 events. 1424/2448 cut-off events. For 3418/3418 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 13170 event pairs, 145 based on Foata normal form. 7/2454 useless extension candidates. Maximal degree in co-relation 7495. Up to 486 conditions per place. [2023-08-26 10:58:10,745 INFO L140 encePairwiseOnDemand]: 360/366 looper letters, 184 selfloop transitions, 33 changer transitions 81/298 dead transitions. [2023-08-26 10:58:10,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 298 transitions, 1581 flow [2023-08-26 10:58:10,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-26 10:58:10,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-26 10:58:10,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2128 transitions. [2023-08-26 10:58:10,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2907103825136612 [2023-08-26 10:58:10,752 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2128 transitions. [2023-08-26 10:58:10,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2128 transitions. [2023-08-26 10:58:10,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:10,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2128 transitions. [2023-08-26 10:58:10,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 106.4) internal successors, (2128), 20 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:10,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 366.0) internal successors, (7686), 21 states have internal predecessors, (7686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:10,768 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 366.0) internal successors, (7686), 21 states have internal predecessors, (7686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:10,768 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 172 flow. Second operand 20 states and 2128 transitions. [2023-08-26 10:58:10,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 298 transitions, 1581 flow [2023-08-26 10:58:10,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 298 transitions, 1537 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-08-26 10:58:10,780 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 491 flow [2023-08-26 10:58:10,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=491, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-08-26 10:58:10,781 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-08-26 10:58:10,781 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 491 flow [2023-08-26 10:58:10,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 94.1304347826087) internal successors, (2165), 23 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:10,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:10,782 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:10,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 10:58:10,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:10,989 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:10,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:10,989 INFO L85 PathProgramCache]: Analyzing trace with hash 817390815, now seen corresponding path program 4 times [2023-08-26 10:58:10,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:10,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88231932] [2023-08-26 10:58:10,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:10,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:11,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:58:11,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:11,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88231932] [2023-08-26 10:58:11,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88231932] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:58:11,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813370237] [2023-08-26 10:58:11,503 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:58:11,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:11,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:58:11,505 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) [2023-08-26 10:58:11,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 10:58:11,673 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:58:11,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:58:11,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-26 10:58:11,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:58:11,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:58:11,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:58:11,870 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 10:58:11,871 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2023-08-26 10:58:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:58:11,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813370237] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:58:11,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:58:11,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 14 [2023-08-26 10:58:11,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760959113] [2023-08-26 10:58:11,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:58:11,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 10:58:11,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:11,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 10:58:11,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-08-26 10:58:11,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 366 [2023-08-26 10:58:11,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 491 flow. Second operand has 16 states, 16 states have (on average 119.6875) internal successors, (1915), 16 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:11,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:11,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 366 [2023-08-26 10:58:11,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:12,517 INFO L124 PetriNetUnfolderBase]: 512/1212 cut-off events. [2023-08-26 10:58:12,518 INFO L125 PetriNetUnfolderBase]: For 2300/2428 co-relation queries the response was YES. [2023-08-26 10:58:12,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3660 conditions, 1212 events. 512/1212 cut-off events. For 2300/2428 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7555 event pairs, 55 based on Foata normal form. 19/1222 useless extension candidates. Maximal degree in co-relation 3644. Up to 198 conditions per place. [2023-08-26 10:58:12,524 INFO L140 encePairwiseOnDemand]: 361/366 looper letters, 72 selfloop transitions, 41 changer transitions 51/172 dead transitions. [2023-08-26 10:58:12,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 172 transitions, 1210 flow [2023-08-26 10:58:12,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 10:58:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 10:58:12,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2133 transitions. [2023-08-26 10:58:12,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34281581485053036 [2023-08-26 10:58:12,531 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2133 transitions. [2023-08-26 10:58:12,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2133 transitions. [2023-08-26 10:58:12,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:12,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2133 transitions. [2023-08-26 10:58:12,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.47058823529412) internal successors, (2133), 17 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:12,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 366.0) internal successors, (6588), 18 states have internal predecessors, (6588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:12,545 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 366.0) internal successors, (6588), 18 states have internal predecessors, (6588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:12,545 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 491 flow. Second operand 17 states and 2133 transitions. [2023-08-26 10:58:12,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 172 transitions, 1210 flow [2023-08-26 10:58:12,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 172 transitions, 1144 flow, removed 30 selfloop flow, removed 3 redundant places. [2023-08-26 10:58:12,555 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 648 flow [2023-08-26 10:58:12,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=648, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2023-08-26 10:58:12,555 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2023-08-26 10:58:12,555 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 648 flow [2023-08-26 10:58:12,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 119.6875) internal successors, (1915), 16 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:12,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:12,557 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:12,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 10:58:12,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:12,763 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:12,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:12,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1366566677, now seen corresponding path program 5 times [2023-08-26 10:58:12,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:12,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095499285] [2023-08-26 10:58:12,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:12,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 10:58:13,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:13,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095499285] [2023-08-26 10:58:13,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095499285] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:58:13,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094580960] [2023-08-26 10:58:13,350 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:58:13,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:13,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:58:13,352 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) [2023-08-26 10:58:13,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 10:58:13,754 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:58:13,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:58:13,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-26 10:58:13,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:58:13,833 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 10:58:13,873 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 10:58:14,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:58:14,001 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-26 10:58:14,165 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 10:58:14,167 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:58:14,168 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2023-08-26 10:58:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:58:14,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:58:14,499 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:58:14,500 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2023-08-26 10:58:14,513 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:58:14,513 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 194 treesize of output 172 [2023-08-26 10:58:14,520 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2023-08-26 10:58:14,529 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:58:14,530 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 48 [2023-08-26 10:58:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:58:14,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094580960] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:58:14,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:58:14,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 22 [2023-08-26 10:58:14,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653959610] [2023-08-26 10:58:14,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:58:14,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 10:58:14,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:14,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 10:58:14,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=443, Unknown=1, NotChecked=0, Total=552 [2023-08-26 10:58:14,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 366 [2023-08-26 10:58:14,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 648 flow. Second operand has 24 states, 24 states have (on average 94.625) internal successors, (2271), 24 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:14,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:14,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 366 [2023-08-26 10:58:14,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:16,566 INFO L124 PetriNetUnfolderBase]: 3112/5252 cut-off events. [2023-08-26 10:58:16,567 INFO L125 PetriNetUnfolderBase]: For 13760/13760 co-relation queries the response was YES. [2023-08-26 10:58:16,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18878 conditions, 5252 events. 3112/5252 cut-off events. For 13760/13760 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 32135 event pairs, 249 based on Foata normal form. 5/5256 useless extension candidates. Maximal degree in co-relation 18856. Up to 1026 conditions per place. [2023-08-26 10:58:16,615 INFO L140 encePairwiseOnDemand]: 361/366 looper letters, 194 selfloop transitions, 63 changer transitions 49/306 dead transitions. [2023-08-26 10:58:16,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 306 transitions, 2161 flow [2023-08-26 10:58:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 10:58:16,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 10:58:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1914 transitions. [2023-08-26 10:58:16,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.290528233151184 [2023-08-26 10:58:16,621 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1914 transitions. [2023-08-26 10:58:16,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1914 transitions. [2023-08-26 10:58:16,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:16,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1914 transitions. [2023-08-26 10:58:16,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 106.33333333333333) internal successors, (1914), 18 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:16,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 366.0) internal successors, (6954), 19 states have internal predecessors, (6954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:16,694 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 366.0) internal successors, (6954), 19 states have internal predecessors, (6954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:16,694 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 648 flow. Second operand 18 states and 1914 transitions. [2023-08-26 10:58:16,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 306 transitions, 2161 flow [2023-08-26 10:58:16,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 306 transitions, 1999 flow, removed 48 selfloop flow, removed 11 redundant places. [2023-08-26 10:58:16,762 INFO L231 Difference]: Finished difference. Result has 96 places, 99 transitions, 1097 flow [2023-08-26 10:58:16,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1097, PETRI_PLACES=96, PETRI_TRANSITIONS=99} [2023-08-26 10:58:16,762 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 38 predicate places. [2023-08-26 10:58:16,762 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 99 transitions, 1097 flow [2023-08-26 10:58:16,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 94.625) internal successors, (2271), 24 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:16,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:16,764 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:16,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 10:58:16,970 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,SelfDestructingSolverStorable10 [2023-08-26 10:58:16,970 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:16,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:16,971 INFO L85 PathProgramCache]: Analyzing trace with hash -974393694, now seen corresponding path program 6 times [2023-08-26 10:58:16,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:16,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324660907] [2023-08-26 10:58:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:16,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:58:17,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:17,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324660907] [2023-08-26 10:58:17,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324660907] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:58:17,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686865304] [2023-08-26 10:58:17,183 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:58:17,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:17,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:58:17,184 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) [2023-08-26 10:58:17,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 10:58:17,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:58:17,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:58:17,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 10:58:17,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:58:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:58:17,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:58:17,801 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:58:17,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686865304] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:58:17,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:58:17,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-26 10:58:17,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242198952] [2023-08-26 10:58:17,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:58:17,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 10:58:17,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:17,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 10:58:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-08-26 10:58:17,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 366 [2023-08-26 10:58:17,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 99 transitions, 1097 flow. Second operand has 20 states, 20 states have (on average 119.4) internal successors, (2388), 20 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:17,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:17,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 366 [2023-08-26 10:58:17,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:18,559 INFO L124 PetriNetUnfolderBase]: 1387/3439 cut-off events. [2023-08-26 10:58:18,559 INFO L125 PetriNetUnfolderBase]: For 12712/13211 co-relation queries the response was YES. [2023-08-26 10:58:18,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11482 conditions, 3439 events. 1387/3439 cut-off events. For 12712/13211 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 28847 event pairs, 768 based on Foata normal form. 104/3491 useless extension candidates. Maximal degree in co-relation 11451. Up to 1675 conditions per place. [2023-08-26 10:58:18,579 INFO L140 encePairwiseOnDemand]: 361/366 looper letters, 88 selfloop transitions, 4 changer transitions 77/177 dead transitions. [2023-08-26 10:58:18,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 177 transitions, 2065 flow [2023-08-26 10:58:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 10:58:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 10:58:18,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1235 transitions. [2023-08-26 10:58:18,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337431693989071 [2023-08-26 10:58:18,584 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1235 transitions. [2023-08-26 10:58:18,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1235 transitions. [2023-08-26 10:58:18,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:18,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1235 transitions. [2023-08-26 10:58:18,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.5) internal successors, (1235), 10 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:18,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 366.0) internal successors, (4026), 11 states have internal predecessors, (4026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:18,591 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 366.0) internal successors, (4026), 11 states have internal predecessors, (4026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:18,591 INFO L175 Difference]: Start difference. First operand has 96 places, 99 transitions, 1097 flow. Second operand 10 states and 1235 transitions. [2023-08-26 10:58:18,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 177 transitions, 2065 flow [2023-08-26 10:58:18,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 177 transitions, 1825 flow, removed 76 selfloop flow, removed 7 redundant places. [2023-08-26 10:58:18,650 INFO L231 Difference]: Finished difference. Result has 104 places, 100 transitions, 1039 flow [2023-08-26 10:58:18,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1039, PETRI_PLACES=104, PETRI_TRANSITIONS=100} [2023-08-26 10:58:18,650 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 46 predicate places. [2023-08-26 10:58:18,651 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 100 transitions, 1039 flow [2023-08-26 10:58:18,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 119.4) internal successors, (2388), 20 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:18,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:18,651 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:18,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 10:58:18,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:18,858 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:18,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:18,858 INFO L85 PathProgramCache]: Analyzing trace with hash -525566155, now seen corresponding path program 7 times [2023-08-26 10:58:18,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:18,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331638351] [2023-08-26 10:58:18,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:18,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:19,446 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:58:19,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:19,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331638351] [2023-08-26 10:58:19,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331638351] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:58:19,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121375038] [2023-08-26 10:58:19,447 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 10:58:19,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:19,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:58:19,449 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) [2023-08-26 10:58:19,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 10:58:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:19,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-26 10:58:19,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:58:19,834 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:58:19,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:58:19,921 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 10:58:19,921 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2023-08-26 10:58:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:58:19,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121375038] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:58:19,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:58:19,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 23 [2023-08-26 10:58:19,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077919115] [2023-08-26 10:58:19,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:58:19,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 10:58:19,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:19,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 10:58:19,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2023-08-26 10:58:19,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 366 [2023-08-26 10:58:19,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 100 transitions, 1039 flow. Second operand has 25 states, 25 states have (on average 113.04) internal successors, (2826), 25 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:19,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:19,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 366 [2023-08-26 10:58:19,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:21,954 INFO L124 PetriNetUnfolderBase]: 1920/4369 cut-off events. [2023-08-26 10:58:21,954 INFO L125 PetriNetUnfolderBase]: For 19295/19648 co-relation queries the response was YES. [2023-08-26 10:58:21,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15992 conditions, 4369 events. 1920/4369 cut-off events. For 19295/19648 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 35772 event pairs, 115 based on Foata normal form. 94/4452 useless extension candidates. Maximal degree in co-relation 15954. Up to 738 conditions per place. [2023-08-26 10:58:21,986 INFO L140 encePairwiseOnDemand]: 360/366 looper letters, 141 selfloop transitions, 150 changer transitions 128/427 dead transitions. [2023-08-26 10:58:21,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 427 transitions, 3796 flow [2023-08-26 10:58:21,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-26 10:58:21,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-26 10:58:21,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 4999 transitions. [2023-08-26 10:58:21,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3252016653655998 [2023-08-26 10:58:21,997 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 4999 transitions. [2023-08-26 10:58:21,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 4999 transitions. [2023-08-26 10:58:21,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:21,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 4999 transitions. [2023-08-26 10:58:22,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 119.02380952380952) internal successors, (4999), 42 states have internal predecessors, (4999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:22,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 366.0) internal successors, (15738), 43 states have internal predecessors, (15738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:22,025 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 366.0) internal successors, (15738), 43 states have internal predecessors, (15738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:22,025 INFO L175 Difference]: Start difference. First operand has 104 places, 100 transitions, 1039 flow. Second operand 42 states and 4999 transitions. [2023-08-26 10:58:22,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 427 transitions, 3796 flow [2023-08-26 10:58:22,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 427 transitions, 3518 flow, removed 119 selfloop flow, removed 10 redundant places. [2023-08-26 10:58:22,079 INFO L231 Difference]: Finished difference. Result has 145 places, 176 transitions, 2315 flow [2023-08-26 10:58:22,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=2315, PETRI_PLACES=145, PETRI_TRANSITIONS=176} [2023-08-26 10:58:22,080 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 87 predicate places. [2023-08-26 10:58:22,080 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 176 transitions, 2315 flow [2023-08-26 10:58:22,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 113.04) internal successors, (2826), 25 states have internal predecessors, (2826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:22,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:22,081 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:22,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 10:58:22,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:22,286 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:22,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:22,287 INFO L85 PathProgramCache]: Analyzing trace with hash -664056821, now seen corresponding path program 8 times [2023-08-26 10:58:22,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:22,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306981187] [2023-08-26 10:58:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:22,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:58:23,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:23,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306981187] [2023-08-26 10:58:23,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306981187] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:58:23,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368266584] [2023-08-26 10:58:23,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:58:23,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:23,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:58:23,077 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) [2023-08-26 10:58:23,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 10:58:23,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:58:23,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:58:23,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-26 10:58:23,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:58:23,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:58:23,425 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-26 10:58:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:58:23,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:58:23,615 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1203 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1203) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)))) is different from false [2023-08-26 10:58:23,627 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:58:23,627 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 35 [2023-08-26 10:58:23,631 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2023-08-26 10:58:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 3 not checked. [2023-08-26 10:58:23,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368266584] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:58:23,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:58:23,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-08-26 10:58:23,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219233521] [2023-08-26 10:58:23,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:58:23,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-26 10:58:23,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:23,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-26 10:58:23,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=735, Unknown=1, NotChecked=54, Total=870 [2023-08-26 10:58:23,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 366 [2023-08-26 10:58:23,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 176 transitions, 2315 flow. Second operand has 30 states, 30 states have (on average 102.9) internal successors, (3087), 30 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:23,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:23,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 366 [2023-08-26 10:58:23,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:26,016 INFO L124 PetriNetUnfolderBase]: 3466/6778 cut-off events. [2023-08-26 10:58:26,016 INFO L125 PetriNetUnfolderBase]: For 59168/59393 co-relation queries the response was YES. [2023-08-26 10:58:26,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30482 conditions, 6778 events. 3466/6778 cut-off events. For 59168/59393 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 52592 event pairs, 250 based on Foata normal form. 18/6788 useless extension candidates. Maximal degree in co-relation 30436. Up to 1440 conditions per place. [2023-08-26 10:58:26,066 INFO L140 encePairwiseOnDemand]: 358/366 looper letters, 127 selfloop transitions, 194 changer transitions 94/419 dead transitions. [2023-08-26 10:58:26,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 419 transitions, 4608 flow [2023-08-26 10:58:26,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-26 10:58:26,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-26 10:58:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2780 transitions. [2023-08-26 10:58:26,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3038251366120219 [2023-08-26 10:58:26,072 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2780 transitions. [2023-08-26 10:58:26,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2780 transitions. [2023-08-26 10:58:26,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:26,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2780 transitions. [2023-08-26 10:58:26,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 111.2) internal successors, (2780), 25 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:26,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 366.0) internal successors, (9516), 26 states have internal predecessors, (9516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:26,087 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 366.0) internal successors, (9516), 26 states have internal predecessors, (9516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:26,087 INFO L175 Difference]: Start difference. First operand has 145 places, 176 transitions, 2315 flow. Second operand 25 states and 2780 transitions. [2023-08-26 10:58:26,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 419 transitions, 4608 flow [2023-08-26 10:58:26,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 419 transitions, 4315 flow, removed 121 selfloop flow, removed 10 redundant places. [2023-08-26 10:58:26,321 INFO L231 Difference]: Finished difference. Result has 162 places, 221 transitions, 3166 flow [2023-08-26 10:58:26,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=2090, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3166, PETRI_PLACES=162, PETRI_TRANSITIONS=221} [2023-08-26 10:58:26,322 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 104 predicate places. [2023-08-26 10:58:26,322 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 221 transitions, 3166 flow [2023-08-26 10:58:26,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 102.9) internal successors, (3087), 30 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:26,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:26,323 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:26,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 10:58:26,528 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,SelfDestructingSolverStorable13 [2023-08-26 10:58:26,529 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:26,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:26,529 INFO L85 PathProgramCache]: Analyzing trace with hash 918421456, now seen corresponding path program 9 times [2023-08-26 10:58:26,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:26,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978765252] [2023-08-26 10:58:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:26,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:58:26,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:26,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978765252] [2023-08-26 10:58:26,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978765252] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:58:26,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098396277] [2023-08-26 10:58:26,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:58:26,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:26,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:58:26,763 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) [2023-08-26 10:58:26,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 10:58:28,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 10:58:28,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:58:28,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-26 10:58:28,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:58:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:58:28,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:58:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:58:28,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098396277] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:58:28,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:58:28,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-26 10:58:28,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017369994] [2023-08-26 10:58:28,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:58:28,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 10:58:28,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:28,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 10:58:28,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2023-08-26 10:58:28,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 366 [2023-08-26 10:58:28,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 221 transitions, 3166 flow. Second operand has 23 states, 23 states have (on average 120.21739130434783) internal successors, (2765), 23 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:28,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:28,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 366 [2023-08-26 10:58:28,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:29,890 INFO L124 PetriNetUnfolderBase]: 3879/9846 cut-off events. [2023-08-26 10:58:29,890 INFO L125 PetriNetUnfolderBase]: For 102579/105203 co-relation queries the response was YES. [2023-08-26 10:58:29,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46873 conditions, 9846 events. 3879/9846 cut-off events. For 102579/105203 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 100711 event pairs, 1884 based on Foata normal form. 271/10032 useless extension candidates. Maximal degree in co-relation 46825. Up to 4320 conditions per place. [2023-08-26 10:58:29,947 INFO L140 encePairwiseOnDemand]: 362/366 looper letters, 209 selfloop transitions, 5 changer transitions 163/385 dead transitions. [2023-08-26 10:58:29,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 385 transitions, 6137 flow [2023-08-26 10:58:29,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 10:58:29,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 10:58:29,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1235 transitions. [2023-08-26 10:58:29,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337431693989071 [2023-08-26 10:58:29,949 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1235 transitions. [2023-08-26 10:58:29,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1235 transitions. [2023-08-26 10:58:29,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:29,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1235 transitions. [2023-08-26 10:58:29,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.5) internal successors, (1235), 10 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:29,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 366.0) internal successors, (4026), 11 states have internal predecessors, (4026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:29,954 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 366.0) internal successors, (4026), 11 states have internal predecessors, (4026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:29,954 INFO L175 Difference]: Start difference. First operand has 162 places, 221 transitions, 3166 flow. Second operand 10 states and 1235 transitions. [2023-08-26 10:58:29,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 385 transitions, 6137 flow [2023-08-26 10:58:30,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 385 transitions, 5698 flow, removed 156 selfloop flow, removed 10 redundant places. [2023-08-26 10:58:30,392 INFO L231 Difference]: Finished difference. Result has 166 places, 222 transitions, 3230 flow [2023-08-26 10:58:30,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3230, PETRI_PLACES=166, PETRI_TRANSITIONS=222} [2023-08-26 10:58:30,393 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 108 predicate places. [2023-08-26 10:58:30,393 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 222 transitions, 3230 flow [2023-08-26 10:58:30,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 120.21739130434783) internal successors, (2765), 23 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:30,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:30,394 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:30,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 10:58:30,595 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,SelfDestructingSolverStorable14 [2023-08-26 10:58:30,595 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:30,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:30,596 INFO L85 PathProgramCache]: Analyzing trace with hash -853400367, now seen corresponding path program 10 times [2023-08-26 10:58:30,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:30,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442170517] [2023-08-26 10:58:30,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:30,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:30,737 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:58:30,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:30,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442170517] [2023-08-26 10:58:30,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442170517] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:58:30,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849492755] [2023-08-26 10:58:30,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:58:30,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:30,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:58:30,741 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) [2023-08-26 10:58:30,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 10:58:30,980 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:58:30,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:58:30,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 10:58:30,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:58:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:58:31,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:58:31,057 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:58:31,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849492755] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:58:31,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:58:31,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2023-08-26 10:58:31,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905627124] [2023-08-26 10:58:31,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:58:31,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 10:58:31,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:31,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 10:58:31,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 10:58:31,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 366 [2023-08-26 10:58:31,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 222 transitions, 3230 flow. Second operand has 7 states, 7 states have (on average 142.71428571428572) internal successors, (999), 7 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:31,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:31,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 366 [2023-08-26 10:58:31,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:32,665 INFO L124 PetriNetUnfolderBase]: 3962/9871 cut-off events. [2023-08-26 10:58:32,665 INFO L125 PetriNetUnfolderBase]: For 108555/111292 co-relation queries the response was YES. [2023-08-26 10:58:32,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48284 conditions, 9871 events. 3962/9871 cut-off events. For 108555/111292 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 99744 event pairs, 691 based on Foata normal form. 78/9888 useless extension candidates. Maximal degree in co-relation 48231. Up to 3707 conditions per place. [2023-08-26 10:58:32,738 INFO L140 encePairwiseOnDemand]: 363/366 looper letters, 123 selfloop transitions, 239 changer transitions 2/372 dead transitions. [2023-08-26 10:58:32,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 372 transitions, 6221 flow [2023-08-26 10:58:32,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 10:58:32,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 10:58:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 893 transitions. [2023-08-26 10:58:32,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40664845173041897 [2023-08-26 10:58:32,741 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 893 transitions. [2023-08-26 10:58:32,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 893 transitions. [2023-08-26 10:58:32,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:32,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 893 transitions. [2023-08-26 10:58:32,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:32,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 366.0) internal successors, (2562), 7 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:32,744 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 366.0) internal successors, (2562), 7 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:32,744 INFO L175 Difference]: Start difference. First operand has 166 places, 222 transitions, 3230 flow. Second operand 6 states and 893 transitions. [2023-08-26 10:58:32,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 372 transitions, 6221 flow [2023-08-26 10:58:33,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 372 transitions, 5835 flow, removed 189 selfloop flow, removed 8 redundant places. [2023-08-26 10:58:33,067 INFO L231 Difference]: Finished difference. Result has 161 places, 337 transitions, 5661 flow [2023-08-26 10:58:33,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=2994, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5661, PETRI_PLACES=161, PETRI_TRANSITIONS=337} [2023-08-26 10:58:33,068 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 103 predicate places. [2023-08-26 10:58:33,068 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 337 transitions, 5661 flow [2023-08-26 10:58:33,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.71428571428572) internal successors, (999), 7 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:33,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:33,069 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:33,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 10:58:33,271 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,SelfDestructingSolverStorable15 [2023-08-26 10:58:33,272 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:33,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:33,272 INFO L85 PathProgramCache]: Analyzing trace with hash -444262685, now seen corresponding path program 11 times [2023-08-26 10:58:33,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:33,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713773829] [2023-08-26 10:58:33,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:33,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:58:34,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:34,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713773829] [2023-08-26 10:58:34,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713773829] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:58:34,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984420585] [2023-08-26 10:58:34,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 10:58:34,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:34,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:58:34,093 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) [2023-08-26 10:58:34,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 10:58:38,645 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 10:58:38,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:58:38,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-26 10:58:38,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:58:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:58:38,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:58:38,984 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 10:58:38,985 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2023-08-26 10:58:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:58:39,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984420585] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:58:39,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:58:39,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 31 [2023-08-26 10:58:39,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545375399] [2023-08-26 10:58:39,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:58:39,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-26 10:58:39,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:39,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-26 10:58:39,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2023-08-26 10:58:39,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 366 [2023-08-26 10:58:39,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 337 transitions, 5661 flow. Second operand has 33 states, 33 states have (on average 112.57575757575758) internal successors, (3715), 33 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:39,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:39,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 366 [2023-08-26 10:58:39,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:44,583 INFO L124 PetriNetUnfolderBase]: 6364/14702 cut-off events. [2023-08-26 10:58:44,583 INFO L125 PetriNetUnfolderBase]: For 193227/195010 co-relation queries the response was YES. [2023-08-26 10:58:44,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82695 conditions, 14702 events. 6364/14702 cut-off events. For 193227/195010 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 150434 event pairs, 446 based on Foata normal form. 108/14778 useless extension candidates. Maximal degree in co-relation 82644. Up to 6139 conditions per place. [2023-08-26 10:58:44,688 INFO L140 encePairwiseOnDemand]: 360/366 looper letters, 522 selfloop transitions, 481 changer transitions 259/1270 dead transitions. [2023-08-26 10:58:44,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 1270 transitions, 18784 flow [2023-08-26 10:58:44,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-08-26 10:58:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2023-08-26 10:58:44,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 13252 transitions. [2023-08-26 10:58:44,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3261950475065229 [2023-08-26 10:58:44,706 INFO L72 ComplementDD]: Start complementDD. Operand 111 states and 13252 transitions. [2023-08-26 10:58:44,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 13252 transitions. [2023-08-26 10:58:44,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:44,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 111 states and 13252 transitions. [2023-08-26 10:58:44,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 112 states, 111 states have (on average 119.38738738738739) internal successors, (13252), 111 states have internal predecessors, (13252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:44,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 112 states, 112 states have (on average 366.0) internal successors, (40992), 112 states have internal predecessors, (40992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:44,915 INFO L81 ComplementDD]: Finished complementDD. Result has 112 states, 112 states have (on average 366.0) internal successors, (40992), 112 states have internal predecessors, (40992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:44,916 INFO L175 Difference]: Start difference. First operand has 161 places, 337 transitions, 5661 flow. Second operand 111 states and 13252 transitions. [2023-08-26 10:58:44,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 1270 transitions, 18784 flow [2023-08-26 10:58:45,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 1270 transitions, 17750 flow, removed 517 selfloop flow, removed 0 redundant places. [2023-08-26 10:58:45,422 INFO L231 Difference]: Finished difference. Result has 300 places, 554 transitions, 10874 flow [2023-08-26 10:58:45,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=5595, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=111, PETRI_FLOW=10874, PETRI_PLACES=300, PETRI_TRANSITIONS=554} [2023-08-26 10:58:45,423 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 242 predicate places. [2023-08-26 10:58:45,423 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 554 transitions, 10874 flow [2023-08-26 10:58:45,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 112.57575757575758) internal successors, (3715), 33 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:45,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:45,424 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:45,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 10:58:45,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-26 10:58:45,635 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:45,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:45,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1456932001, now seen corresponding path program 12 times [2023-08-26 10:58:45,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:45,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021062234] [2023-08-26 10:58:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:45,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:58:46,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:46,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021062234] [2023-08-26 10:58:46,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021062234] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:58:46,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156281152] [2023-08-26 10:58:46,357 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 10:58:46,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:46,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:58:46,361 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) [2023-08-26 10:58:46,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 10:58:47,467 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 10:58:47,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:58:47,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-26 10:58:47,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:58:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:58:47,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:58:47,718 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 10:58:47,718 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2023-08-26 10:58:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:58:47,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156281152] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:58:47,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:58:47,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 25 [2023-08-26 10:58:47,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969124044] [2023-08-26 10:58:47,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:58:47,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-26 10:58:47,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:47,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-26 10:58:47,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2023-08-26 10:58:47,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 366 [2023-08-26 10:58:47,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 554 transitions, 10874 flow. Second operand has 27 states, 27 states have (on average 112.77777777777777) internal successors, (3045), 27 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:47,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:47,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 366 [2023-08-26 10:58:47,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:58:53,900 INFO L124 PetriNetUnfolderBase]: 8318/19001 cut-off events. [2023-08-26 10:58:53,900 INFO L125 PetriNetUnfolderBase]: For 289567/292141 co-relation queries the response was YES. [2023-08-26 10:58:54,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103575 conditions, 19001 events. 8318/19001 cut-off events. For 289567/292141 co-relation queries the response was YES. Maximal size of possible extension queue 1115. Compared 199044 event pairs, 514 based on Foata normal form. 172/19137 useless extension candidates. Maximal degree in co-relation 103494. Up to 8092 conditions per place. [2023-08-26 10:58:54,247 INFO L140 encePairwiseOnDemand]: 360/366 looper letters, 227 selfloop transitions, 699 changer transitions 217/1151 dead transitions. [2023-08-26 10:58:54,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 1151 transitions, 19587 flow [2023-08-26 10:58:54,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-08-26 10:58:54,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-08-26 10:58:54,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 8094 transitions. [2023-08-26 10:58:54,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3252169720347155 [2023-08-26 10:58:54,261 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 8094 transitions. [2023-08-26 10:58:54,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 8094 transitions. [2023-08-26 10:58:54,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:58:54,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 8094 transitions. [2023-08-26 10:58:54,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 119.02941176470588) internal successors, (8094), 68 states have internal predecessors, (8094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:54,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 366.0) internal successors, (25254), 69 states have internal predecessors, (25254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:54,303 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 366.0) internal successors, (25254), 69 states have internal predecessors, (25254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:54,304 INFO L175 Difference]: Start difference. First operand has 300 places, 554 transitions, 10874 flow. Second operand 68 states and 8094 transitions. [2023-08-26 10:58:54,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 1151 transitions, 19587 flow [2023-08-26 10:58:55,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 1151 transitions, 15781 flow, removed 1433 selfloop flow, removed 16 redundant places. [2023-08-26 10:58:55,430 INFO L231 Difference]: Finished difference. Result has 368 places, 728 transitions, 13395 flow [2023-08-26 10:58:55,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=8535, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=13395, PETRI_PLACES=368, PETRI_TRANSITIONS=728} [2023-08-26 10:58:55,431 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 310 predicate places. [2023-08-26 10:58:55,431 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 728 transitions, 13395 flow [2023-08-26 10:58:55,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 112.77777777777777) internal successors, (3045), 27 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:55,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:58:55,433 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:58:55,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-26 10:58:55,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 10:58:55,641 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:58:55,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:58:55,641 INFO L85 PathProgramCache]: Analyzing trace with hash -696544299, now seen corresponding path program 13 times [2023-08-26 10:58:55,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:58:55,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089312016] [2023-08-26 10:58:55,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:58:55,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:58:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:58:56,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:58:56,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089312016] [2023-08-26 10:58:56,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089312016] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:58:56,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281968172] [2023-08-26 10:58:56,534 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 10:58:56,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:58:56,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:58:56,537 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) [2023-08-26 10:58:56,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 10:58:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:58:56,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-26 10:58:56,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:58:57,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 10:58:57,113 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-08-26 10:58:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 10:58:57,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:58:57,410 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2140 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2140) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 12)))) is different from false [2023-08-26 10:58:57,419 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 10:58:57,420 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 35 [2023-08-26 10:58:57,424 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2023-08-26 10:58:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 4 not checked. [2023-08-26 10:58:57,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281968172] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:58:57,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:58:57,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 11] total 38 [2023-08-26 10:58:57,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026391080] [2023-08-26 10:58:57,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:58:57,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-26 10:58:57,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:58:57,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-26 10:58:57,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1368, Unknown=1, NotChecked=74, Total=1560 [2023-08-26 10:58:57,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 366 [2023-08-26 10:58:57,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 728 transitions, 13395 flow. Second operand has 40 states, 40 states have (on average 102.875) internal successors, (4115), 40 states have internal predecessors, (4115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:58:57,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:58:57,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 366 [2023-08-26 10:58:57,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:08,631 INFO L124 PetriNetUnfolderBase]: 15804/30709 cut-off events. [2023-08-26 10:59:08,631 INFO L125 PetriNetUnfolderBase]: For 345717/347635 co-relation queries the response was YES. [2023-08-26 10:59:09,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171276 conditions, 30709 events. 15804/30709 cut-off events. For 345717/347635 co-relation queries the response was YES. Maximal size of possible extension queue 1543. Compared 297837 event pairs, 1145 based on Foata normal form. 25/30709 useless extension candidates. Maximal degree in co-relation 171178. Up to 13293 conditions per place. [2023-08-26 10:59:09,266 INFO L140 encePairwiseOnDemand]: 356/366 looper letters, 162 selfloop transitions, 928 changer transitions 128/1222 dead transitions. [2023-08-26 10:59:09,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 1222 transitions, 21232 flow [2023-08-26 10:59:09,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-26 10:59:09,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-26 10:59:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3671 transitions. [2023-08-26 10:59:09,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30394104984268916 [2023-08-26 10:59:09,277 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3671 transitions. [2023-08-26 10:59:09,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3671 transitions. [2023-08-26 10:59:09,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:09,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3671 transitions. [2023-08-26 10:59:09,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 111.24242424242425) internal successors, (3671), 33 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:09,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 366.0) internal successors, (12444), 34 states have internal predecessors, (12444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:09,294 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 366.0) internal successors, (12444), 34 states have internal predecessors, (12444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:09,294 INFO L175 Difference]: Start difference. First operand has 368 places, 728 transitions, 13395 flow. Second operand 33 states and 3671 transitions. [2023-08-26 10:59:09,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 1222 transitions, 21232 flow [2023-08-26 10:59:12,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 1222 transitions, 20329 flow, removed 219 selfloop flow, removed 32 redundant places. [2023-08-26 10:59:12,031 INFO L231 Difference]: Finished difference. Result has 372 places, 958 transitions, 18697 flow [2023-08-26 10:59:12,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=12694, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=698, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=18697, PETRI_PLACES=372, PETRI_TRANSITIONS=958} [2023-08-26 10:59:12,032 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 314 predicate places. [2023-08-26 10:59:12,032 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 958 transitions, 18697 flow [2023-08-26 10:59:12,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 102.875) internal successors, (4115), 40 states have internal predecessors, (4115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:12,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:12,033 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:12,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:12,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:12,240 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:59:12,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:12,240 INFO L85 PathProgramCache]: Analyzing trace with hash -653184164, now seen corresponding path program 14 times [2023-08-26 10:59:12,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:12,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578970069] [2023-08-26 10:59:12,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:12,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:59:12,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:12,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578970069] [2023-08-26 10:59:12,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578970069] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:12,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671767079] [2023-08-26 10:59:12,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 10:59:12,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:12,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:12,509 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) [2023-08-26 10:59:12,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 10:59:12,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 10:59:12,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:12,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 10:59:12,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:59:12,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 10:59:12,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671767079] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:12,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:12,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 16 [2023-08-26 10:59:12,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657432979] [2023-08-26 10:59:12,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:12,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 10:59:12,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:12,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 10:59:12,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-08-26 10:59:12,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 366 [2023-08-26 10:59:12,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 958 transitions, 18697 flow. Second operand has 17 states, 17 states have (on average 119.41176470588235) internal successors, (2030), 17 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:12,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:12,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 366 [2023-08-26 10:59:12,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:59:30,432 INFO L124 PetriNetUnfolderBase]: 23251/59814 cut-off events. [2023-08-26 10:59:30,432 INFO L125 PetriNetUnfolderBase]: For 810127/817368 co-relation queries the response was YES. [2023-08-26 10:59:31,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364713 conditions, 59814 events. 23251/59814 cut-off events. For 810127/817368 co-relation queries the response was YES. Maximal size of possible extension queue 3622. Compared 801627 event pairs, 3987 based on Foata normal form. 1851/61632 useless extension candidates. Maximal degree in co-relation 364613. Up to 24244 conditions per place. [2023-08-26 10:59:31,767 INFO L140 encePairwiseOnDemand]: 361/366 looper letters, 310 selfloop transitions, 1097 changer transitions 669/2084 dead transitions. [2023-08-26 10:59:31,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 2084 transitions, 44132 flow [2023-08-26 10:59:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-26 10:59:31,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-26 10:59:31,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3362 transitions. [2023-08-26 10:59:31,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34021453147136205 [2023-08-26 10:59:31,771 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3362 transitions. [2023-08-26 10:59:31,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3362 transitions. [2023-08-26 10:59:31,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:59:31,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3362 transitions. [2023-08-26 10:59:31,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 124.51851851851852) internal successors, (3362), 27 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:31,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 366.0) internal successors, (10248), 28 states have internal predecessors, (10248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:31,783 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 366.0) internal successors, (10248), 28 states have internal predecessors, (10248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:31,783 INFO L175 Difference]: Start difference. First operand has 372 places, 958 transitions, 18697 flow. Second operand 27 states and 3362 transitions. [2023-08-26 10:59:31,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 2084 transitions, 44132 flow [2023-08-26 10:59:40,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 2084 transitions, 42897 flow, removed 453 selfloop flow, removed 13 redundant places. [2023-08-26 10:59:40,474 INFO L231 Difference]: Finished difference. Result has 393 places, 1375 transitions, 30482 flow [2023-08-26 10:59:40,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=18157, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=958, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=785, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=30482, PETRI_PLACES=393, PETRI_TRANSITIONS=1375} [2023-08-26 10:59:40,475 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 335 predicate places. [2023-08-26 10:59:40,475 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 1375 transitions, 30482 flow [2023-08-26 10:59:40,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 119.41176470588235) internal successors, (2030), 17 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:40,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:59:40,475 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:59:40,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 10:59:40,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:40,676 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 10:59:40,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:59:40,677 INFO L85 PathProgramCache]: Analyzing trace with hash -157058333, now seen corresponding path program 15 times [2023-08-26 10:59:40,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:59:40,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4884149] [2023-08-26 10:59:40,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:59:40,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:59:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:59:41,476 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:59:41,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:59:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4884149] [2023-08-26 10:59:41,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4884149] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:59:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304508758] [2023-08-26 10:59:41,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 10:59:41,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:59:41,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:59:41,478 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) [2023-08-26 10:59:41,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-26 10:59:53,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-26 10:59:53,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:59:53,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-26 10:59:53,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:59:57,905 INFO L322 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-08-26 10:59:57,905 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-08-26 10:59:57,920 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 28 refuted. 2 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:59:57,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:59:58,118 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-26 10:59:58,119 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2023-08-26 10:59:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 10:59:58,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304508758] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:59:58,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:59:58,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 41 [2023-08-26 10:59:58,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522489263] [2023-08-26 10:59:58,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:59:58,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-08-26 10:59:58,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:59:58,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-08-26 10:59:58,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1545, Unknown=2, NotChecked=0, Total=1806 [2023-08-26 10:59:58,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 366 [2023-08-26 10:59:58,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 1375 transitions, 30482 flow. Second operand has 43 states, 43 states have (on average 105.4186046511628) internal successors, (4533), 43 states have internal predecessors, (4533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:59:58,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:59:58,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 366 [2023-08-26 10:59:58,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:01:43,913 INFO L124 PetriNetUnfolderBase]: 44671/106235 cut-off events. [2023-08-26 11:01:43,914 INFO L125 PetriNetUnfolderBase]: For 1876076/1885327 co-relation queries the response was YES. [2023-08-26 11:01:46,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711591 conditions, 106235 events. 44671/106235 cut-off events. For 1876076/1885327 co-relation queries the response was YES. Maximal size of possible extension queue 6408. Compared 1456988 event pairs, 8870 based on Foata normal form. 585/106759 useless extension candidates. Maximal degree in co-relation 711484. Up to 41609 conditions per place. [2023-08-26 11:01:46,610 INFO L140 encePairwiseOnDemand]: 359/366 looper letters, 1440 selfloop transitions, 1052 changer transitions 2839/5339 dead transitions. [2023-08-26 11:01:46,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 5339 transitions, 116453 flow [2023-08-26 11:01:46,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2023-08-26 11:01:46,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2023-08-26 11:01:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 22217 transitions. [2023-08-26 11:01:46,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3065766959209582 [2023-08-26 11:01:46,626 INFO L72 ComplementDD]: Start complementDD. Operand 198 states and 22217 transitions. [2023-08-26 11:01:46,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 198 states and 22217 transitions. [2023-08-26 11:01:46,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:01:46,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 198 states and 22217 transitions. [2023-08-26 11:01:46,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 199 states, 198 states have (on average 112.20707070707071) internal successors, (22217), 198 states have internal predecessors, (22217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:01:46,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 199 states, 199 states have (on average 366.0) internal successors, (72834), 199 states have internal predecessors, (72834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:01:46,892 INFO L81 ComplementDD]: Finished complementDD. Result has 199 states, 199 states have (on average 366.0) internal successors, (72834), 199 states have internal predecessors, (72834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:01:46,892 INFO L175 Difference]: Start difference. First operand has 393 places, 1375 transitions, 30482 flow. Second operand 198 states and 22217 transitions. [2023-08-26 11:01:46,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 5339 transitions, 116453 flow [2023-08-26 11:02:21,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 5339 transitions, 113385 flow, removed 1530 selfloop flow, removed 9 redundant places. [2023-08-26 11:02:21,363 INFO L231 Difference]: Finished difference. Result has 661 places, 1855 transitions, 45608 flow [2023-08-26 11:02:21,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=29780, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=642, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=198, PETRI_FLOW=45608, PETRI_PLACES=661, PETRI_TRANSITIONS=1855} [2023-08-26 11:02:21,364 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 603 predicate places. [2023-08-26 11:02:21,364 INFO L495 AbstractCegarLoop]: Abstraction has has 661 places, 1855 transitions, 45608 flow [2023-08-26 11:02:21,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 105.4186046511628) internal successors, (4533), 43 states have internal predecessors, (4533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:02:21,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:02:21,365 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:02:21,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-26 11:02:21,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:02:21,566 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 11:02:21,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:02:21,566 INFO L85 PathProgramCache]: Analyzing trace with hash 93045563, now seen corresponding path program 16 times [2023-08-26 11:02:21,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:02:21,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810459850] [2023-08-26 11:02:21,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:02:21,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:02:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:02:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:02:22,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:02:22,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810459850] [2023-08-26 11:02:22,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810459850] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:02:22,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93145479] [2023-08-26 11:02:22,389 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 11:02:22,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:02:22,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:02:22,390 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) [2023-08-26 11:02:22,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-26 11:02:22,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 11:02:22,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 11:02:22,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-26 11:02:22,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:02:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 11:02:22,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 11:02:23,059 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 11:02:23,059 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2023-08-26 11:02:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-26 11:02:23,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93145479] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 11:02:23,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 11:02:23,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 8] total 34 [2023-08-26 11:02:23,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529643524] [2023-08-26 11:02:23,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 11:02:23,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-26 11:02:23,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:02:23,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-26 11:02:23,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1146, Unknown=0, NotChecked=0, Total=1260 [2023-08-26 11:02:23,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 366 [2023-08-26 11:02:23,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 1855 transitions, 45608 flow. Second operand has 36 states, 36 states have (on average 112.86111111111111) internal successors, (4063), 36 states have internal predecessors, (4063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:02:23,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:02:23,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 366 [2023-08-26 11:02:23,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 11:03:04,349 INFO L124 PetriNetUnfolderBase]: 29447/69811 cut-off events. [2023-08-26 11:03:04,349 INFO L125 PetriNetUnfolderBase]: For 5218868/5223452 co-relation queries the response was YES. [2023-08-26 11:03:07,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587258 conditions, 69811 events. 29447/69811 cut-off events. For 5218868/5223452 co-relation queries the response was YES. Maximal size of possible extension queue 4138. Compared 903252 event pairs, 2523 based on Foata normal form. 431/70190 useless extension candidates. Maximal degree in co-relation 587060. Up to 28437 conditions per place. [2023-08-26 11:03:08,006 INFO L140 encePairwiseOnDemand]: 360/366 looper letters, 677 selfloop transitions, 2328 changer transitions 281/3294 dead transitions. [2023-08-26 11:03:08,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 736 places, 3294 transitions, 84022 flow [2023-08-26 11:03:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2023-08-26 11:03:08,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2023-08-26 11:03:08,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 12782 transitions. [2023-08-26 11:03:08,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32638782493233237 [2023-08-26 11:03:08,018 INFO L72 ComplementDD]: Start complementDD. Operand 107 states and 12782 transitions. [2023-08-26 11:03:08,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 12782 transitions. [2023-08-26 11:03:08,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 11:03:08,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 107 states and 12782 transitions. [2023-08-26 11:03:08,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 108 states, 107 states have (on average 119.45794392523365) internal successors, (12782), 107 states have internal predecessors, (12782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:03:08,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 108 states, 108 states have (on average 366.0) internal successors, (39528), 108 states have internal predecessors, (39528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:03:08,065 INFO L81 ComplementDD]: Finished complementDD. Result has 108 states, 108 states have (on average 366.0) internal successors, (39528), 108 states have internal predecessors, (39528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:03:08,065 INFO L175 Difference]: Start difference. First operand has 661 places, 1855 transitions, 45608 flow. Second operand 107 states and 12782 transitions. [2023-08-26 11:03:08,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 736 places, 3294 transitions, 84022 flow [2023-08-26 11:07:48,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 3294 transitions, 78847 flow, removed 2432 selfloop flow, removed 31 redundant places. [2023-08-26 11:07:48,096 INFO L231 Difference]: Finished difference. Result has 746 places, 2539 transitions, 65395 flow [2023-08-26 11:07:48,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=41673, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1855, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1639, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=107, PETRI_FLOW=65395, PETRI_PLACES=746, PETRI_TRANSITIONS=2539} [2023-08-26 11:07:48,098 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 688 predicate places. [2023-08-26 11:07:48,098 INFO L495 AbstractCegarLoop]: Abstraction has has 746 places, 2539 transitions, 65395 flow [2023-08-26 11:07:48,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 112.86111111111111) internal successors, (4063), 36 states have internal predecessors, (4063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:07:48,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 11:07:48,099 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 11:07:48,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-26 11:07:48,306 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,SelfDestructingSolverStorable21 [2023-08-26 11:07:48,306 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 53 more)] === [2023-08-26 11:07:48,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 11:07:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash 169215459, now seen corresponding path program 17 times [2023-08-26 11:07:48,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 11:07:48,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035064057] [2023-08-26 11:07:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 11:07:48,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 11:07:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 11:07:49,166 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 11:07:49,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 11:07:49,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035064057] [2023-08-26 11:07:49,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035064057] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 11:07:49,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329158296] [2023-08-26 11:07:49,166 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 11:07:49,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 11:07:49,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 11:07:49,169 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) [2023-08-26 11:07:49,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-26 11:07:53,888 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-26 11:07:53,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 11:07:53,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-26 11:07:53,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 11:08:00,136 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 11:08:00,136 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 10 [2023-08-26 11:08:00,151 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 18 refuted. 3 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-26 11:08:00,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 11:08:00,265 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-26 11:08:00,266 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 11 [2023-08-26 11:08:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-26 11:08:00,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329158296] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 11:08:00,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 11:08:00,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 9] total 28 [2023-08-26 11:08:00,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608318902] [2023-08-26 11:08:00,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 11:08:00,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-26 11:08:00,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 11:08:00,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-26 11:08:00,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=694, Unknown=3, NotChecked=0, Total=870 [2023-08-26 11:08:00,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 366 [2023-08-26 11:08:00,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 2539 transitions, 65395 flow. Second operand has 30 states, 30 states have (on average 112.6) internal successors, (3378), 30 states have internal predecessors, (3378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 11:08:00,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 11:08:00,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 366 [2023-08-26 11:08:00,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand