/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 07:54:06,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 07:54:06,878 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 07:54:06,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 07:54:06,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 07:54:06,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 07:54:06,914 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 07:54:06,919 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 07:54:06,919 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 07:54:06,924 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 07:54:06,924 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 07:54:06,924 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 07:54:06,925 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 07:54:06,926 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 07:54:06,926 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 07:54:06,926 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 07:54:06,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 07:54:06,927 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 07:54:06,927 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 07:54:06,927 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 07:54:06,927 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 07:54:06,928 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 07:54:06,928 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 07:54:06,929 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 07:54:06,929 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 07:54:06,929 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 07:54:06,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 07:54:06,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:54:06,930 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 07:54:06,930 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 07:54:06,931 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 07:54:06,931 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 07:54:06,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 07:54:06,932 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 07:54:06,932 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 07:54:06,932 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 07:54:07,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 07:54:07,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 07:54:07,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 07:54:07,254 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 07:54:07,256 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 07:54:07,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-08-25 07:54:08,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 07:54:08,618 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 07:54:08,618 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-08-25 07:54:08,652 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0708ff2/42f7c569c88241ca9ecb5a7628db5899/FLAGe45c3bd09 [2023-08-25 07:54:08,664 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0708ff2/42f7c569c88241ca9ecb5a7628db5899 [2023-08-25 07:54:08,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 07:54:08,667 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 07:54:08,667 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 07:54:08,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 07:54:08,673 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 07:54:08,674 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:54:08" (1/1) ... [2023-08-25 07:54:08,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664b97f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:54:08, skipping insertion in model container [2023-08-25 07:54:08,675 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:54:08" (1/1) ... [2023-08-25 07:54:08,723 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 07:54:09,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:54:09,035 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 07:54:09,050 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-25 07:54:09,051 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-25 07:54:09,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:54:09,094 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 07:54:09,094 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 07:54:09,100 INFO L206 MainTranslator]: Completed translation [2023-08-25 07:54:09,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:54:09 WrapperNode [2023-08-25 07:54:09,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 07:54:09,102 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 07:54:09,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 07:54:09,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 07:54:09,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:54:09" (1/1) ... [2023-08-25 07:54:09,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:54:09" (1/1) ... [2023-08-25 07:54:09,153 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2023-08-25 07:54:09,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 07:54:09,154 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 07:54:09,154 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 07:54:09,154 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 07:54:09,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:54:09" (1/1) ... [2023-08-25 07:54:09,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:54:09" (1/1) ... [2023-08-25 07:54:09,163 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:54:09" (1/1) ... [2023-08-25 07:54:09,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:54:09" (1/1) ... [2023-08-25 07:54:09,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:54:09" (1/1) ... [2023-08-25 07:54:09,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:54:09" (1/1) ... [2023-08-25 07:54:09,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:54:09" (1/1) ... [2023-08-25 07:54:09,181 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:54:09" (1/1) ... [2023-08-25 07:54:09,183 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 07:54:09,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 07:54:09,184 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 07:54:09,184 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 07:54:09,185 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:54:09" (1/1) ... [2023-08-25 07:54:09,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:54:09,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:09,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 07:54:09,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 07:54:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-25 07:54:09,252 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-25 07:54:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-25 07:54:09,252 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-25 07:54:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 07:54:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 07:54:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 07:54:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 07:54:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 07:54:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 07:54:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 07:54:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 07:54:09,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 07:54:09,254 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 07:54:09,354 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 07:54:09,355 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 07:54:09,550 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 07:54:09,611 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 07:54:09,611 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 07:54:09,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:54:09 BoogieIcfgContainer [2023-08-25 07:54:09,613 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 07:54:09,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 07:54:09,615 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 07:54:09,618 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 07:54:09,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:54:08" (1/3) ... [2023-08-25 07:54:09,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520ac2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:54:09, skipping insertion in model container [2023-08-25 07:54:09,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:54:09" (2/3) ... [2023-08-25 07:54:09,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520ac2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:54:09, skipping insertion in model container [2023-08-25 07:54:09,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:54:09" (3/3) ... [2023-08-25 07:54:09,620 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2023-08-25 07:54:09,637 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 07:54:09,638 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-25 07:54:09,638 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 07:54:09,698 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 07:54:09,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 166 flow [2023-08-25 07:54:09,786 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-08-25 07:54:09,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:54:09,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 6/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-25 07:54:09,791 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 78 transitions, 166 flow [2023-08-25 07:54:09,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 76 transitions, 158 flow [2023-08-25 07:54:09,799 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 07:54:09,810 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 76 transitions, 158 flow [2023-08-25 07:54:09,814 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 76 transitions, 158 flow [2023-08-25 07:54:09,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 158 flow [2023-08-25 07:54:09,872 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-08-25 07:54:09,872 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:54:09,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 6/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-25 07:54:09,875 INFO L119 LiptonReduction]: Number of co-enabled transitions 1792 [2023-08-25 07:54:11,918 INFO L134 LiptonReduction]: Checked pairs total: 2074 [2023-08-25 07:54:11,919 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-25 07:54:11,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 07:54:11,944 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;@5ef8c702, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 07:54:11,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-25 07:54:11,948 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 07:54:11,948 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-25 07:54:11,948 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:54:11,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:11,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 07:54:11,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:11,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:11,954 INFO L85 PathProgramCache]: Analyzing trace with hash 10943499, now seen corresponding path program 1 times [2023-08-25 07:54:11,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:11,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277334397] [2023-08-25 07:54:11,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:11,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:12,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:12,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277334397] [2023-08-25 07:54:12,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277334397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:54:12,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:54:12,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 07:54:12,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167786489] [2023-08-25 07:54:12,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:54:12,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 07:54:12,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:12,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 07:54:12,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 07:54:12,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 156 [2023-08-25 07:54:12,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 44 flow. Second operand has 2 states, 2 states have (on average 63.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:12,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 156 [2023-08-25 07:54:12,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:12,238 INFO L124 PetriNetUnfolderBase]: 70/113 cut-off events. [2023-08-25 07:54:12,239 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 07:54:12,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 113 events. 70/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 256 event pairs, 44 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 228. Up to 114 conditions per place. [2023-08-25 07:54:12,240 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 12 selfloop transitions, 0 changer transitions 1/13 dead transitions. [2023-08-25 07:54:12,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 58 flow [2023-08-25 07:54:12,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 07:54:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 07:54:12,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 141 transitions. [2023-08-25 07:54:12,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2023-08-25 07:54:12,251 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 141 transitions. [2023-08-25 07:54:12,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 141 transitions. [2023-08-25 07:54:12,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:12,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 141 transitions. [2023-08-25 07:54:12,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,260 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,261 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 44 flow. Second operand 2 states and 141 transitions. [2023-08-25 07:54:12,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 58 flow [2023-08-25 07:54:12,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:54:12,264 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 28 flow [2023-08-25 07:54:12,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=12} [2023-08-25 07:54:12,268 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -7 predicate places. [2023-08-25 07:54:12,269 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 28 flow [2023-08-25 07:54:12,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:12,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 07:54:12,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 07:54:12,270 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:12,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:12,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1927611490, now seen corresponding path program 1 times [2023-08-25 07:54:12,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:12,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225162489] [2023-08-25 07:54:12,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:12,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:12,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:12,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225162489] [2023-08-25 07:54:12,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225162489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:54:12,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:54:12,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:54:12,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433238144] [2023-08-25 07:54:12,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:54:12,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 07:54:12,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:12,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 07:54:12,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 07:54:12,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:12,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 28 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:12,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:12,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:12,570 INFO L124 PetriNetUnfolderBase]: 84/143 cut-off events. [2023-08-25 07:54:12,570 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:54:12,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 143 events. 84/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 393 event pairs, 15 based on Foata normal form. 15/119 useless extension candidates. Maximal degree in co-relation 298. Up to 86 conditions per place. [2023-08-25 07:54:12,571 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 23 selfloop transitions, 7 changer transitions 2/32 dead transitions. [2023-08-25 07:54:12,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 32 transitions, 134 flow [2023-08-25 07:54:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 07:54:12,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 07:54:12,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2023-08-25 07:54:12,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2023-08-25 07:54:12,579 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 314 transitions. [2023-08-25 07:54:12,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 314 transitions. [2023-08-25 07:54:12,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:12,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 314 transitions. [2023-08-25 07:54:12,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,584 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,584 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 28 flow. Second operand 5 states and 314 transitions. [2023-08-25 07:54:12,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 32 transitions, 134 flow [2023-08-25 07:54:12,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 32 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:54:12,585 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 75 flow [2023-08-25 07:54:12,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2023-08-25 07:54:12,586 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2023-08-25 07:54:12,586 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 75 flow [2023-08-25 07:54:12,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:12,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:12,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 07:54:12,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:12,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:12,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1337591207, now seen corresponding path program 1 times [2023-08-25 07:54:12,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:12,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647162192] [2023-08-25 07:54:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:12,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:12,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:12,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647162192] [2023-08-25 07:54:12,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647162192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:54:12,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:54:12,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:54:12,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557729183] [2023-08-25 07:54:12,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:54:12,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:54:12,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:12,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:54:12,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:54:12,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:12,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:12,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:12,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:12,825 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-08-25 07:54:12,825 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-25 07:54:12,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 157 events. 92/157 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 438 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 448. Up to 61 conditions per place. [2023-08-25 07:54:12,829 INFO L140 encePairwiseOnDemand]: 152/156 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-08-25 07:54:12,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 30 transitions, 173 flow [2023-08-25 07:54:12,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 07:54:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 07:54:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2023-08-25 07:54:12,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2023-08-25 07:54:12,832 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2023-08-25 07:54:12,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2023-08-25 07:54:12,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:12,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2023-08-25 07:54:12,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,838 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,838 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 75 flow. Second operand 4 states and 249 transitions. [2023-08-25 07:54:12,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 30 transitions, 173 flow [2023-08-25 07:54:12,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:54:12,841 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 119 flow [2023-08-25 07:54:12,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-08-25 07:54:12,842 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-08-25 07:54:12,842 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 119 flow [2023-08-25 07:54:12,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:12,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:12,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 07:54:12,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:12,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:12,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1303192770, now seen corresponding path program 1 times [2023-08-25 07:54:12,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:12,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257206253] [2023-08-25 07:54:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:12,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:12,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:12,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257206253] [2023-08-25 07:54:12,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257206253] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:54:12,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:54:12,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:54:12,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615115889] [2023-08-25 07:54:12,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:54:12,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:54:12,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:12,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:54:12,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:54:12,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:12,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:12,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:12,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:12,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:13,079 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-08-25 07:54:13,080 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-08-25 07:54:13,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 229 events. 132/229 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 713 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 748. Up to 101 conditions per place. [2023-08-25 07:54:13,082 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-25 07:54:13,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 301 flow [2023-08-25 07:54:13,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:54:13,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:54:13,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 374 transitions. [2023-08-25 07:54:13,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3995726495726496 [2023-08-25 07:54:13,084 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 374 transitions. [2023-08-25 07:54:13,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 374 transitions. [2023-08-25 07:54:13,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:13,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 374 transitions. [2023-08-25 07:54:13,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 62.333333333333336) internal successors, (374), 6 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,087 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,087 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 119 flow. Second operand 6 states and 374 transitions. [2023-08-25 07:54:13,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 301 flow [2023-08-25 07:54:13,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 285 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-25 07:54:13,091 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 203 flow [2023-08-25 07:54:13,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-25 07:54:13,092 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2023-08-25 07:54:13,092 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 203 flow [2023-08-25 07:54:13,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:13,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:13,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 07:54:13,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:13,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:13,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1303209510, now seen corresponding path program 2 times [2023-08-25 07:54:13,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:13,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808694802] [2023-08-25 07:54:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:13,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:13,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:13,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808694802] [2023-08-25 07:54:13,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808694802] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:54:13,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:54:13,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:54:13,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119333670] [2023-08-25 07:54:13,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:54:13,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:54:13,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:13,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:54:13,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:54:13,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:13,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:13,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:13,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:13,308 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-08-25 07:54:13,308 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2023-08-25 07:54:13,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 199 events. 114/199 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 611 event pairs, 23 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 761. Up to 84 conditions per place. [2023-08-25 07:54:13,309 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 29 selfloop transitions, 11 changer transitions 4/44 dead transitions. [2023-08-25 07:54:13,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 349 flow [2023-08-25 07:54:13,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 07:54:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 07:54:13,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2023-08-25 07:54:13,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012820512820513 [2023-08-25 07:54:13,312 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 313 transitions. [2023-08-25 07:54:13,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 313 transitions. [2023-08-25 07:54:13,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:13,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 313 transitions. [2023-08-25 07:54:13,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,315 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,315 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 203 flow. Second operand 5 states and 313 transitions. [2023-08-25 07:54:13,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 349 flow [2023-08-25 07:54:13,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 335 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-25 07:54:13,319 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 236 flow [2023-08-25 07:54:13,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2023-08-25 07:54:13,320 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 18 predicate places. [2023-08-25 07:54:13,320 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 236 flow [2023-08-25 07:54:13,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:13,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:13,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 07:54:13,321 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:13,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:13,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1194528409, now seen corresponding path program 1 times [2023-08-25 07:54:13,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:13,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6548157] [2023-08-25 07:54:13,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:13,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:13,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:13,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6548157] [2023-08-25 07:54:13,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6548157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:54:13,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:54:13,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:54:13,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472112481] [2023-08-25 07:54:13,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:54:13,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:54:13,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:13,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:54:13,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:54:13,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:13,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:13,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:13,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:13,514 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-08-25 07:54:13,514 INFO L125 PetriNetUnfolderBase]: For 1059/1059 co-relation queries the response was YES. [2023-08-25 07:54:13,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 263 events. 150/263 cut-off events. For 1059/1059 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 861 event pairs, 20 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 1078. Up to 73 conditions per place. [2023-08-25 07:54:13,516 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 35 selfloop transitions, 20 changer transitions 3/58 dead transitions. [2023-08-25 07:54:13,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 496 flow [2023-08-25 07:54:13,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 07:54:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 07:54:13,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 494 transitions. [2023-08-25 07:54:13,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2023-08-25 07:54:13,518 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 494 transitions. [2023-08-25 07:54:13,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 494 transitions. [2023-08-25 07:54:13,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:13,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 494 transitions. [2023-08-25 07:54:13,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 61.75) internal successors, (494), 8 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,522 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,522 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 236 flow. Second operand 8 states and 494 transitions. [2023-08-25 07:54:13,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 496 flow [2023-08-25 07:54:13,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 457 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-25 07:54:13,526 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 336 flow [2023-08-25 07:54:13,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=336, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-08-25 07:54:13,526 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2023-08-25 07:54:13,526 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 336 flow [2023-08-25 07:54:13,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:13,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:13,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 07:54:13,527 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:13,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:13,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1229400619, now seen corresponding path program 2 times [2023-08-25 07:54:13,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:13,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924770007] [2023-08-25 07:54:13,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:13,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:13,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:13,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924770007] [2023-08-25 07:54:13,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924770007] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:54:13,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:54:13,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:54:13,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659892987] [2023-08-25 07:54:13,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:54:13,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:54:13,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:13,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:54:13,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:54:13,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:13,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:13,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:13,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:13,791 INFO L124 PetriNetUnfolderBase]: 138/243 cut-off events. [2023-08-25 07:54:13,791 INFO L125 PetriNetUnfolderBase]: For 1276/1276 co-relation queries the response was YES. [2023-08-25 07:54:13,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 243 events. 138/243 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 813 event pairs, 20 based on Foata normal form. 8/251 useless extension candidates. Maximal degree in co-relation 1130. Up to 69 conditions per place. [2023-08-25 07:54:13,793 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 27 selfloop transitions, 20 changer transitions 8/55 dead transitions. [2023-08-25 07:54:13,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 552 flow [2023-08-25 07:54:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 07:54:13,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 07:54:13,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 432 transitions. [2023-08-25 07:54:13,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956043956043956 [2023-08-25 07:54:13,795 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 432 transitions. [2023-08-25 07:54:13,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 432 transitions. [2023-08-25 07:54:13,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:13,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 432 transitions. [2023-08-25 07:54:13,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.714285714285715) internal successors, (432), 7 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,799 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,799 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 336 flow. Second operand 7 states and 432 transitions. [2023-08-25 07:54:13,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 55 transitions, 552 flow [2023-08-25 07:54:13,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 501 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-08-25 07:54:13,804 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 360 flow [2023-08-25 07:54:13,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2023-08-25 07:54:13,806 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 30 predicate places. [2023-08-25 07:54:13,807 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 360 flow [2023-08-25 07:54:13,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:13,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:13,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:13,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 07:54:13,808 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:13,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:13,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1194458659, now seen corresponding path program 3 times [2023-08-25 07:54:13,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:13,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803650119] [2023-08-25 07:54:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:13,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:14,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:14,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803650119] [2023-08-25 07:54:14,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803650119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:54:14,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:54:14,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:54:14,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437953241] [2023-08-25 07:54:14,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:54:14,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:54:14,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:14,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:54:14,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:54:14,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:14,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 360 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:14,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:14,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:14,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:14,189 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-08-25 07:54:14,189 INFO L125 PetriNetUnfolderBase]: For 1545/1545 co-relation queries the response was YES. [2023-08-25 07:54:14,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 263 events. 150/263 cut-off events. For 1545/1545 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 904 event pairs, 33 based on Foata normal form. 4/267 useless extension candidates. Maximal degree in co-relation 1257. Up to 130 conditions per place. [2023-08-25 07:54:14,191 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 38 selfloop transitions, 16 changer transitions 12/66 dead transitions. [2023-08-25 07:54:14,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 646 flow [2023-08-25 07:54:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 07:54:14,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 07:54:14,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 556 transitions. [2023-08-25 07:54:14,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396011396011396 [2023-08-25 07:54:14,193 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 556 transitions. [2023-08-25 07:54:14,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 556 transitions. [2023-08-25 07:54:14,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:14,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 556 transitions. [2023-08-25 07:54:14,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.77777777777778) internal successors, (556), 9 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:14,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 156.0) internal successors, (1560), 10 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:14,197 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 156.0) internal successors, (1560), 10 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:14,197 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 360 flow. Second operand 9 states and 556 transitions. [2023-08-25 07:54:14,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 646 flow [2023-08-25 07:54:14,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 66 transitions, 596 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-25 07:54:14,203 INFO L231 Difference]: Finished difference. Result has 59 places, 39 transitions, 401 flow [2023-08-25 07:54:14,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=401, PETRI_PLACES=59, PETRI_TRANSITIONS=39} [2023-08-25 07:54:14,205 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-08-25 07:54:14,206 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 39 transitions, 401 flow [2023-08-25 07:54:14,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:14,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:14,206 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:14,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 07:54:14,206 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:14,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:14,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1623786141, now seen corresponding path program 4 times [2023-08-25 07:54:14,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:14,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600514668] [2023-08-25 07:54:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:14,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:14,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:14,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600514668] [2023-08-25 07:54:14,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600514668] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:14,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646792017] [2023-08-25 07:54:14,302 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 07:54:14,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:14,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:14,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:54:14,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 07:54:14,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 07:54:14,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:54:14,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-25 07:54:14,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:14,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:14,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:14,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646792017] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:14,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:14,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-25 07:54:14,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156877305] [2023-08-25 07:54:14,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:14,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 07:54:14,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:14,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 07:54:14,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-25 07:54:14,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:14,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 39 transitions, 401 flow. Second operand has 12 states, 12 states have (on average 57.916666666666664) internal successors, (695), 12 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:14,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:14,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:14,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:14,859 INFO L124 PetriNetUnfolderBase]: 198/343 cut-off events. [2023-08-25 07:54:14,859 INFO L125 PetriNetUnfolderBase]: For 2474/2474 co-relation queries the response was YES. [2023-08-25 07:54:14,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 343 events. 198/343 cut-off events. For 2474/2474 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1152 event pairs, 18 based on Foata normal form. 16/359 useless extension candidates. Maximal degree in co-relation 1727. Up to 91 conditions per place. [2023-08-25 07:54:14,862 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 34 selfloop transitions, 35 changer transitions 22/91 dead transitions. [2023-08-25 07:54:14,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 987 flow [2023-08-25 07:54:14,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 07:54:14,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 07:54:14,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 858 transitions. [2023-08-25 07:54:14,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2023-08-25 07:54:14,866 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 858 transitions. [2023-08-25 07:54:14,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 858 transitions. [2023-08-25 07:54:14,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:14,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 858 transitions. [2023-08-25 07:54:14,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 61.285714285714285) internal successors, (858), 14 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:14,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 156.0) internal successors, (2340), 15 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:14,874 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 156.0) internal successors, (2340), 15 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:14,874 INFO L175 Difference]: Start difference. First operand has 59 places, 39 transitions, 401 flow. Second operand 14 states and 858 transitions. [2023-08-25 07:54:14,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 987 flow [2023-08-25 07:54:14,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 950 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-25 07:54:14,883 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 723 flow [2023-08-25 07:54:14,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=723, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2023-08-25 07:54:14,885 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 48 predicate places. [2023-08-25 07:54:14,885 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 723 flow [2023-08-25 07:54:14,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 57.916666666666664) internal successors, (695), 12 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:14,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:14,887 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:14,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-25 07:54:15,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:15,094 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:15,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:15,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2076322240, now seen corresponding path program 5 times [2023-08-25 07:54:15,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:15,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404516048] [2023-08-25 07:54:15,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:15,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:15,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:15,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404516048] [2023-08-25 07:54:15,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404516048] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:15,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270791094] [2023-08-25 07:54:15,240 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 07:54:15,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:15,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:15,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:54:15,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 07:54:15,342 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 07:54:15,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:54:15,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 07:54:15,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:15,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:15,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270791094] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:15,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:15,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-25 07:54:15,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298070222] [2023-08-25 07:54:15,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:15,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 07:54:15,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:15,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 07:54:15,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-08-25 07:54:15,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:15,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 723 flow. Second operand has 16 states, 16 states have (on average 57.8125) internal successors, (925), 16 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:15,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:15,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:15,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:15,746 INFO L124 PetriNetUnfolderBase]: 254/455 cut-off events. [2023-08-25 07:54:15,747 INFO L125 PetriNetUnfolderBase]: For 5613/5613 co-relation queries the response was YES. [2023-08-25 07:54:15,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2627 conditions, 455 events. 254/455 cut-off events. For 5613/5613 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1590 event pairs, 55 based on Foata normal form. 32/487 useless extension candidates. Maximal degree in co-relation 2598. Up to 249 conditions per place. [2023-08-25 07:54:15,750 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 65 selfloop transitions, 25 changer transitions 27/117 dead transitions. [2023-08-25 07:54:15,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 117 transitions, 1537 flow [2023-08-25 07:54:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 07:54:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 07:54:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 979 transitions. [2023-08-25 07:54:15,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3922275641025641 [2023-08-25 07:54:15,753 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 979 transitions. [2023-08-25 07:54:15,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 979 transitions. [2023-08-25 07:54:15,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:15,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 979 transitions. [2023-08-25 07:54:15,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 61.1875) internal successors, (979), 16 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:15,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 156.0) internal successors, (2652), 17 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:15,760 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 156.0) internal successors, (2652), 17 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:15,760 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 723 flow. Second operand 16 states and 979 transitions. [2023-08-25 07:54:15,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 117 transitions, 1537 flow [2023-08-25 07:54:15,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 117 transitions, 1160 flow, removed 175 selfloop flow, removed 5 redundant places. [2023-08-25 07:54:15,772 INFO L231 Difference]: Finished difference. Result has 92 places, 69 transitions, 808 flow [2023-08-25 07:54:15,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=808, PETRI_PLACES=92, PETRI_TRANSITIONS=69} [2023-08-25 07:54:15,773 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2023-08-25 07:54:15,773 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 69 transitions, 808 flow [2023-08-25 07:54:15,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 57.8125) internal successors, (925), 16 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:15,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:15,774 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:15,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 07:54:15,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-25 07:54:15,979 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:15,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:15,980 INFO L85 PathProgramCache]: Analyzing trace with hash 291972828, now seen corresponding path program 6 times [2023-08-25 07:54:15,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:15,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695316201] [2023-08-25 07:54:15,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:15,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:16,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:16,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695316201] [2023-08-25 07:54:16,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695316201] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:16,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809045167] [2023-08-25 07:54:16,110 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 07:54:16,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:16,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:16,111 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:54:16,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 07:54:16,183 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 07:54:16,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:54:16,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 07:54:16,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:16,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:16,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:16,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809045167] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:16,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:16,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-25 07:54:16,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144469900] [2023-08-25 07:54:16,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:16,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 07:54:16,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:16,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 07:54:16,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-25 07:54:16,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:16,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 69 transitions, 808 flow. Second operand has 17 states, 17 states have (on average 57.76470588235294) internal successors, (982), 17 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:16,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:16,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:16,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:16,784 INFO L124 PetriNetUnfolderBase]: 408/747 cut-off events. [2023-08-25 07:54:16,784 INFO L125 PetriNetUnfolderBase]: For 15120/15120 co-relation queries the response was YES. [2023-08-25 07:54:16,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4329 conditions, 747 events. 408/747 cut-off events. For 15120/15120 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3272 event pairs, 44 based on Foata normal form. 32/779 useless extension candidates. Maximal degree in co-relation 4291. Up to 233 conditions per place. [2023-08-25 07:54:16,790 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 73 selfloop transitions, 71 changer transitions 37/181 dead transitions. [2023-08-25 07:54:16,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 181 transitions, 2194 flow [2023-08-25 07:54:16,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 07:54:16,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 07:54:16,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1346 transitions. [2023-08-25 07:54:16,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3921911421911422 [2023-08-25 07:54:16,794 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1346 transitions. [2023-08-25 07:54:16,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1346 transitions. [2023-08-25 07:54:16,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:16,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1346 transitions. [2023-08-25 07:54:16,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 61.18181818181818) internal successors, (1346), 22 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:16,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 156.0) internal successors, (3588), 23 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:16,802 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 156.0) internal successors, (3588), 23 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:16,803 INFO L175 Difference]: Start difference. First operand has 92 places, 69 transitions, 808 flow. Second operand 22 states and 1346 transitions. [2023-08-25 07:54:16,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 181 transitions, 2194 flow [2023-08-25 07:54:16,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 181 transitions, 2082 flow, removed 48 selfloop flow, removed 4 redundant places. [2023-08-25 07:54:16,831 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 1553 flow [2023-08-25 07:54:16,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1553, PETRI_PLACES=123, PETRI_TRANSITIONS=107} [2023-08-25 07:54:16,831 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 99 predicate places. [2023-08-25 07:54:16,831 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 1553 flow [2023-08-25 07:54:16,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 57.76470588235294) internal successors, (982), 17 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:16,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:16,832 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:16,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 07:54:17,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:17,038 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:17,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:17,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1663879424, now seen corresponding path program 7 times [2023-08-25 07:54:17,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:17,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504189613] [2023-08-25 07:54:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:17,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:17,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:17,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504189613] [2023-08-25 07:54:17,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504189613] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:17,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381540079] [2023-08-25 07:54:17,156 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 07:54:17,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:17,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:17,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:54:17,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 07:54:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:17,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 07:54:17,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:17,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:17,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381540079] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:17,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:17,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-25 07:54:17,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884614524] [2023-08-25 07:54:17,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:17,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 07:54:17,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:17,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 07:54:17,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-25 07:54:17,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:17,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 107 transitions, 1553 flow. Second operand has 16 states, 16 states have (on average 57.8125) internal successors, (925), 16 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:17,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:17,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:17,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:17,965 INFO L124 PetriNetUnfolderBase]: 632/1131 cut-off events. [2023-08-25 07:54:17,965 INFO L125 PetriNetUnfolderBase]: For 41223/41223 co-relation queries the response was YES. [2023-08-25 07:54:17,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8448 conditions, 1131 events. 632/1131 cut-off events. For 41223/41223 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5364 event pairs, 27 based on Foata normal form. 32/1163 useless extension candidates. Maximal degree in co-relation 8395. Up to 369 conditions per place. [2023-08-25 07:54:17,976 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 71 selfloop transitions, 133 changer transitions 46/250 dead transitions. [2023-08-25 07:54:17,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 250 transitions, 3947 flow [2023-08-25 07:54:17,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 07:54:17,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 07:54:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1591 transitions. [2023-08-25 07:54:17,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.392258382642998 [2023-08-25 07:54:17,982 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1591 transitions. [2023-08-25 07:54:17,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1591 transitions. [2023-08-25 07:54:17,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:17,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1591 transitions. [2023-08-25 07:54:17,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 61.19230769230769) internal successors, (1591), 26 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:17,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 156.0) internal successors, (4212), 27 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:17,991 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 156.0) internal successors, (4212), 27 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:17,991 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 1553 flow. Second operand 26 states and 1591 transitions. [2023-08-25 07:54:17,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 250 transitions, 3947 flow [2023-08-25 07:54:18,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 250 transitions, 3577 flow, removed 173 selfloop flow, removed 6 redundant places. [2023-08-25 07:54:18,073 INFO L231 Difference]: Finished difference. Result has 156 places, 161 transitions, 2715 flow [2023-08-25 07:54:18,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2715, PETRI_PLACES=156, PETRI_TRANSITIONS=161} [2023-08-25 07:54:18,074 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 132 predicate places. [2023-08-25 07:54:18,074 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 161 transitions, 2715 flow [2023-08-25 07:54:18,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 57.8125) internal successors, (925), 16 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:18,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:18,075 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:18,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-25 07:54:18,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:18,281 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:18,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:18,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1789443084, now seen corresponding path program 8 times [2023-08-25 07:54:18,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:18,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100182186] [2023-08-25 07:54:18,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:18,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:18,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:18,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100182186] [2023-08-25 07:54:18,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100182186] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:18,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466606111] [2023-08-25 07:54:18,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:54:18,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:18,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:18,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:54:18,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 07:54:18,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:54:18,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:54:18,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-25 07:54:18,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:18,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:18,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466606111] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:18,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:18,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-25 07:54:18,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209518606] [2023-08-25 07:54:18,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:18,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 07:54:18,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:18,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 07:54:18,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2023-08-25 07:54:18,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:18,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 161 transitions, 2715 flow. Second operand has 25 states, 25 states have (on average 57.44) internal successors, (1436), 25 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:18,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:18,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:18,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:19,556 INFO L124 PetriNetUnfolderBase]: 868/1603 cut-off events. [2023-08-25 07:54:19,556 INFO L125 PetriNetUnfolderBase]: For 100387/100387 co-relation queries the response was YES. [2023-08-25 07:54:19,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15126 conditions, 1603 events. 868/1603 cut-off events. For 100387/100387 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8691 event pairs, 62 based on Foata normal form. 40/1643 useless extension candidates. Maximal degree in co-relation 15058. Up to 566 conditions per place. [2023-08-25 07:54:19,577 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 82 selfloop transitions, 180 changer transitions 47/309 dead transitions. [2023-08-25 07:54:19,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 309 transitions, 6864 flow [2023-08-25 07:54:19,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 07:54:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 07:54:19,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1644 transitions. [2023-08-25 07:54:19,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903133903133903 [2023-08-25 07:54:19,581 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1644 transitions. [2023-08-25 07:54:19,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1644 transitions. [2023-08-25 07:54:19,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:19,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1644 transitions. [2023-08-25 07:54:19,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 60.888888888888886) internal successors, (1644), 27 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:19,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 156.0) internal successors, (4368), 28 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:19,595 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 156.0) internal successors, (4368), 28 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:19,595 INFO L175 Difference]: Start difference. First operand has 156 places, 161 transitions, 2715 flow. Second operand 27 states and 1644 transitions. [2023-08-25 07:54:19,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 309 transitions, 6864 flow [2023-08-25 07:54:19,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 309 transitions, 4997 flow, removed 912 selfloop flow, removed 9 redundant places. [2023-08-25 07:54:19,842 INFO L231 Difference]: Finished difference. Result has 186 places, 226 transitions, 3906 flow [2023-08-25 07:54:19,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3906, PETRI_PLACES=186, PETRI_TRANSITIONS=226} [2023-08-25 07:54:19,843 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 162 predicate places. [2023-08-25 07:54:19,843 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 226 transitions, 3906 flow [2023-08-25 07:54:19,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 57.44) internal successors, (1436), 25 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:19,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:19,844 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:19,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 07:54:20,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-25 07:54:20,050 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:20,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:20,050 INFO L85 PathProgramCache]: Analyzing trace with hash -827872136, now seen corresponding path program 9 times [2023-08-25 07:54:20,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:20,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761543691] [2023-08-25 07:54:20,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:20,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:20,168 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 07:54:20,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:20,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761543691] [2023-08-25 07:54:20,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761543691] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:20,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511097987] [2023-08-25 07:54:20,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 07:54:20,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:20,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:20,170 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:54:20,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 07:54:20,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 07:54:20,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:54:20,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 07:54:20,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 07:54:20,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 07:54:20,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511097987] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:20,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:20,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-08-25 07:54:20,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198622777] [2023-08-25 07:54:20,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:20,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 07:54:20,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:20,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 07:54:20,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2023-08-25 07:54:20,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:20,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 226 transitions, 3906 flow. Second operand has 21 states, 21 states have (on average 57.714285714285715) internal successors, (1212), 21 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:20,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:20,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:20,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:21,551 INFO L124 PetriNetUnfolderBase]: 1472/2711 cut-off events. [2023-08-25 07:54:21,552 INFO L125 PetriNetUnfolderBase]: For 169869/169869 co-relation queries the response was YES. [2023-08-25 07:54:21,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26144 conditions, 2711 events. 1472/2711 cut-off events. For 169869/169869 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 16030 event pairs, 46 based on Foata normal form. 32/2743 useless extension candidates. Maximal degree in co-relation 26063. Up to 1062 conditions per place. [2023-08-25 07:54:21,591 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 91 selfloop transitions, 329 changer transitions 58/478 dead transitions. [2023-08-25 07:54:21,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 478 transitions, 9919 flow [2023-08-25 07:54:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-25 07:54:21,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-25 07:54:21,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1955 transitions. [2023-08-25 07:54:21,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916266025641026 [2023-08-25 07:54:21,595 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1955 transitions. [2023-08-25 07:54:21,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1955 transitions. [2023-08-25 07:54:21,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:21,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1955 transitions. [2023-08-25 07:54:21,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 61.09375) internal successors, (1955), 32 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:21,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 156.0) internal successors, (5148), 33 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:21,604 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 156.0) internal successors, (5148), 33 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:21,604 INFO L175 Difference]: Start difference. First operand has 186 places, 226 transitions, 3906 flow. Second operand 32 states and 1955 transitions. [2023-08-25 07:54:21,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 478 transitions, 9919 flow [2023-08-25 07:54:22,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 478 transitions, 8456 flow, removed 681 selfloop flow, removed 9 redundant places. [2023-08-25 07:54:22,035 INFO L231 Difference]: Finished difference. Result has 221 places, 386 transitions, 7472 flow [2023-08-25 07:54:22,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7472, PETRI_PLACES=221, PETRI_TRANSITIONS=386} [2023-08-25 07:54:22,036 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 197 predicate places. [2023-08-25 07:54:22,036 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 386 transitions, 7472 flow [2023-08-25 07:54:22,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 57.714285714285715) internal successors, (1212), 21 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:22,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:22,036 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:22,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 07:54:22,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:22,242 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:22,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:22,243 INFO L85 PathProgramCache]: Analyzing trace with hash 476019586, now seen corresponding path program 10 times [2023-08-25 07:54:22,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:22,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275146283] [2023-08-25 07:54:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:22,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:22,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:22,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275146283] [2023-08-25 07:54:22,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275146283] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:22,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692848309] [2023-08-25 07:54:22,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 07:54:22,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:22,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:22,673 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:54:22,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 07:54:22,762 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 07:54:22,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:54:22,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-25 07:54:22,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:22,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:23,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692848309] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:23,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:23,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2023-08-25 07:54:23,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953865012] [2023-08-25 07:54:23,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:23,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-25 07:54:23,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:23,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-25 07:54:23,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2023-08-25 07:54:23,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:23,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 386 transitions, 7472 flow. Second operand has 33 states, 33 states have (on average 57.42424242424242) internal successors, (1895), 33 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:23,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:23,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:23,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:25,062 INFO L124 PetriNetUnfolderBase]: 1968/3695 cut-off events. [2023-08-25 07:54:25,062 INFO L125 PetriNetUnfolderBase]: For 316431/316431 co-relation queries the response was YES. [2023-08-25 07:54:25,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39269 conditions, 3695 events. 1968/3695 cut-off events. For 316431/316431 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 23489 event pairs, 185 based on Foata normal form. 64/3759 useless extension candidates. Maximal degree in co-relation 39174. Up to 1514 conditions per place. [2023-08-25 07:54:25,117 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 218 selfloop transitions, 388 changer transitions 79/685 dead transitions. [2023-08-25 07:54:25,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 685 transitions, 15875 flow [2023-08-25 07:54:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-25 07:54:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-25 07:54:25,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2558 transitions. [2023-08-25 07:54:25,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904151404151404 [2023-08-25 07:54:25,121 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2558 transitions. [2023-08-25 07:54:25,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2558 transitions. [2023-08-25 07:54:25,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:25,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2558 transitions. [2023-08-25 07:54:25,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 60.904761904761905) internal successors, (2558), 42 states have internal predecessors, (2558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:25,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 156.0) internal successors, (6708), 43 states have internal predecessors, (6708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:25,133 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 156.0) internal successors, (6708), 43 states have internal predecessors, (6708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:25,133 INFO L175 Difference]: Start difference. First operand has 221 places, 386 transitions, 7472 flow. Second operand 42 states and 2558 transitions. [2023-08-25 07:54:25,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 685 transitions, 15875 flow [2023-08-25 07:54:25,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 685 transitions, 12481 flow, removed 1667 selfloop flow, removed 8 redundant places. [2023-08-25 07:54:25,854 INFO L231 Difference]: Finished difference. Result has 274 places, 517 transitions, 10384 flow [2023-08-25 07:54:25,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=6172, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=10384, PETRI_PLACES=274, PETRI_TRANSITIONS=517} [2023-08-25 07:54:25,855 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 250 predicate places. [2023-08-25 07:54:25,855 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 517 transitions, 10384 flow [2023-08-25 07:54:25,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 57.42424242424242) internal successors, (1895), 33 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:25,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:25,856 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:25,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-25 07:54:26,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:26,063 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:26,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:26,063 INFO L85 PathProgramCache]: Analyzing trace with hash 365035356, now seen corresponding path program 11 times [2023-08-25 07:54:26,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:26,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060292310] [2023-08-25 07:54:26,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:26,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:26,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:26,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060292310] [2023-08-25 07:54:26,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060292310] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:26,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646598434] [2023-08-25 07:54:26,290 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 07:54:26,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:26,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:26,291 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:54:26,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 07:54:26,374 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-08-25 07:54:26,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:54:26,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-25 07:54:26,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:26,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:54:26,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646598434] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:26,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:26,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2023-08-25 07:54:26,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164875540] [2023-08-25 07:54:26,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:26,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 07:54:26,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:26,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 07:54:26,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2023-08-25 07:54:26,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:26,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 517 transitions, 10384 flow. Second operand has 32 states, 32 states have (on average 57.375) internal successors, (1836), 32 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:26,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:26,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:26,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:28,964 INFO L124 PetriNetUnfolderBase]: 2428/4491 cut-off events. [2023-08-25 07:54:28,965 INFO L125 PetriNetUnfolderBase]: For 567912/567912 co-relation queries the response was YES. [2023-08-25 07:54:29,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48536 conditions, 4491 events. 2428/4491 cut-off events. For 567912/567912 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 28390 event pairs, 32 based on Foata normal form. 68/4559 useless extension candidates. Maximal degree in co-relation 48420. Up to 1314 conditions per place. [2023-08-25 07:54:29,022 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 135 selfloop transitions, 595 changer transitions 105/835 dead transitions. [2023-08-25 07:54:29,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 835 transitions, 19684 flow [2023-08-25 07:54:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-08-25 07:54:29,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-08-25 07:54:29,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 3596 transitions. [2023-08-25 07:54:29,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906996957844415 [2023-08-25 07:54:29,029 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 3596 transitions. [2023-08-25 07:54:29,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 3596 transitions. [2023-08-25 07:54:29,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:29,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 3596 transitions. [2023-08-25 07:54:29,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 60.94915254237288) internal successors, (3596), 59 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:29,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 156.0) internal successors, (9360), 60 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:29,045 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 156.0) internal successors, (9360), 60 states have internal predecessors, (9360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:29,045 INFO L175 Difference]: Start difference. First operand has 274 places, 517 transitions, 10384 flow. Second operand 59 states and 3596 transitions. [2023-08-25 07:54:29,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 835 transitions, 19684 flow [2023-08-25 07:54:30,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 835 transitions, 17967 flow, removed 802 selfloop flow, removed 15 redundant places. [2023-08-25 07:54:30,283 INFO L231 Difference]: Finished difference. Result has 352 places, 635 transitions, 14513 flow [2023-08-25 07:54:30,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=8925, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=14513, PETRI_PLACES=352, PETRI_TRANSITIONS=635} [2023-08-25 07:54:30,283 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 328 predicate places. [2023-08-25 07:54:30,283 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 635 transitions, 14513 flow [2023-08-25 07:54:30,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 57.375) internal successors, (1836), 32 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:30,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:30,284 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:30,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-25 07:54:30,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 07:54:30,485 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:30,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:30,486 INFO L85 PathProgramCache]: Analyzing trace with hash -288340833, now seen corresponding path program 12 times [2023-08-25 07:54:30,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:30,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359701207] [2023-08-25 07:54:30,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:30,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:30,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:30,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359701207] [2023-08-25 07:54:30,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359701207] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:30,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410731060] [2023-08-25 07:54:30,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 07:54:30,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:30,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:30,873 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:54:30,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 07:54:30,996 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-08-25 07:54:30,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:54:30,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-25 07:54:30,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:31,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:31,513 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:31,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410731060] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:31,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:31,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-08-25 07:54:31,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913717231] [2023-08-25 07:54:31,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:31,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-08-25 07:54:31,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:31,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-08-25 07:54:31,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=587, Invalid=1863, Unknown=0, NotChecked=0, Total=2450 [2023-08-25 07:54:31,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:31,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 635 transitions, 14513 flow. Second operand has 50 states, 50 states have (on average 57.22) internal successors, (2861), 50 states have internal predecessors, (2861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:31,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:31,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:31,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:35,488 INFO L124 PetriNetUnfolderBase]: 2888/5315 cut-off events. [2023-08-25 07:54:35,489 INFO L125 PetriNetUnfolderBase]: For 1317822/1317822 co-relation queries the response was YES. [2023-08-25 07:54:35,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77550 conditions, 5315 events. 2888/5315 cut-off events. For 1317822/1317822 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 32205 event pairs, 20 based on Foata normal form. 80/5395 useless extension candidates. Maximal degree in co-relation 77401. Up to 1650 conditions per place. [2023-08-25 07:54:35,580 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 132 selfloop transitions, 707 changer transitions 154/993 dead transitions. [2023-08-25 07:54:35,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 993 transitions, 31842 flow [2023-08-25 07:54:35,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-08-25 07:54:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2023-08-25 07:54:35,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 4865 transitions. [2023-08-25 07:54:35,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38982371794871795 [2023-08-25 07:54:35,591 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 4865 transitions. [2023-08-25 07:54:35,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 4865 transitions. [2023-08-25 07:54:35,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:35,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 4865 transitions. [2023-08-25 07:54:35,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 60.8125) internal successors, (4865), 80 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:35,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 156.0) internal successors, (12636), 81 states have internal predecessors, (12636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:35,612 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 156.0) internal successors, (12636), 81 states have internal predecessors, (12636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:35,612 INFO L175 Difference]: Start difference. First operand has 352 places, 635 transitions, 14513 flow. Second operand 80 states and 4865 transitions. [2023-08-25 07:54:35,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 993 transitions, 31842 flow [2023-08-25 07:54:38,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 993 transitions, 25593 flow, removed 3017 selfloop flow, removed 17 redundant places. [2023-08-25 07:54:38,400 INFO L231 Difference]: Finished difference. Result has 449 places, 754 transitions, 17596 flow [2023-08-25 07:54:38,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=11392, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=589, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=17596, PETRI_PLACES=449, PETRI_TRANSITIONS=754} [2023-08-25 07:54:38,401 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 425 predicate places. [2023-08-25 07:54:38,401 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 754 transitions, 17596 flow [2023-08-25 07:54:38,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 57.22) internal successors, (2861), 50 states have internal predecessors, (2861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:38,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:38,402 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:38,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 07:54:38,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-25 07:54:38,609 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:38,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:38,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1251045927, now seen corresponding path program 13 times [2023-08-25 07:54:38,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:38,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125010410] [2023-08-25 07:54:38,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:38,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:39,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:54:39,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125010410] [2023-08-25 07:54:39,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125010410] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:54:39,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731386294] [2023-08-25 07:54:39,682 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 07:54:39,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:54:39,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:54:39,689 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:54:39,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 07:54:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:54:39,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-25 07:54:39,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:54:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:39,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:54:40,610 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:54:40,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731386294] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:54:40,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:54:40,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 47 [2023-08-25 07:54:40,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580739985] [2023-08-25 07:54:40,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:54:40,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-25 07:54:40,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:54:40,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-25 07:54:40,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=1822, Unknown=0, NotChecked=0, Total=2352 [2023-08-25 07:54:40,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-25 07:54:40,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 754 transitions, 17596 flow. Second operand has 49 states, 49 states have (on average 57.244897959183675) internal successors, (2805), 49 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:40,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:54:40,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-25 07:54:40,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:54:45,101 INFO L124 PetriNetUnfolderBase]: 3096/5663 cut-off events. [2023-08-25 07:54:45,101 INFO L125 PetriNetUnfolderBase]: For 2128923/2128923 co-relation queries the response was YES. [2023-08-25 07:54:45,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95348 conditions, 5663 events. 3096/5663 cut-off events. For 2128923/2128923 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 33753 event pairs, 20 based on Foata normal form. 20/5683 useless extension candidates. Maximal degree in co-relation 95165. Up to 1778 conditions per place. [2023-08-25 07:54:45,391 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 161 selfloop transitions, 761 changer transitions 170/1092 dead transitions. [2023-08-25 07:54:45,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 1092 transitions, 35020 flow [2023-08-25 07:54:45,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-08-25 07:54:45,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-08-25 07:54:45,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 5340 transitions. [2023-08-25 07:54:45,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388986013986014 [2023-08-25 07:54:45,404 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 5340 transitions. [2023-08-25 07:54:45,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 5340 transitions. [2023-08-25 07:54:45,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:54:45,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 5340 transitions. [2023-08-25 07:54:45,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 60.68181818181818) internal successors, (5340), 88 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:45,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 156.0) internal successors, (13884), 89 states have internal predecessors, (13884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:45,426 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 156.0) internal successors, (13884), 89 states have internal predecessors, (13884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:45,426 INFO L175 Difference]: Start difference. First operand has 449 places, 754 transitions, 17596 flow. Second operand 88 states and 5340 transitions. [2023-08-25 07:54:45,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 1092 transitions, 35020 flow [2023-08-25 07:54:50,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 1092 transitions, 28492 flow, removed 3125 selfloop flow, removed 13 redundant places. [2023-08-25 07:54:50,179 INFO L231 Difference]: Finished difference. Result has 533 places, 806 transitions, 17139 flow [2023-08-25 07:54:50,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=13716, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=710, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=17139, PETRI_PLACES=533, PETRI_TRANSITIONS=806} [2023-08-25 07:54:50,180 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 509 predicate places. [2023-08-25 07:54:50,180 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 806 transitions, 17139 flow [2023-08-25 07:54:50,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 57.244897959183675) internal successors, (2805), 49 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:54:50,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:54:50,181 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:54:50,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 07:54:50,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-25 07:54:50,381 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-25 07:54:50,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:54:50,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1592332046, now seen corresponding path program 14 times [2023-08-25 07:54:50,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:54:50,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742112740] [2023-08-25 07:54:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:54:50,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:54:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 07:54:50,419 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 07:54:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 07:54:50,490 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 07:54:50,490 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 07:54:50,491 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (12 of 13 remaining) [2023-08-25 07:54:50,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-08-25 07:54:50,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-08-25 07:54:50,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 13 remaining) [2023-08-25 07:54:50,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2023-08-25 07:54:50,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-08-25 07:54:50,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-08-25 07:54:50,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-08-25 07:54:50,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-08-25 07:54:50,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-08-25 07:54:50,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-08-25 07:54:50,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-08-25 07:54:50,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-08-25 07:54:50,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-25 07:54:50,494 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 1, 1, 1] [2023-08-25 07:54:50,498 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 07:54:50,498 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 07:54:50,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 07:54:50 BasicIcfg [2023-08-25 07:54:50,597 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 07:54:50,597 INFO L158 Benchmark]: Toolchain (without parser) took 41930.75ms. Allocated memory was 339.7MB in the beginning and 2.3GB in the end (delta: 2.0GB). Free memory was 314.9MB in the beginning and 1.3GB in the end (delta: -951.0MB). Peak memory consumption was 1.0GB. Max. memory is 16.0GB. [2023-08-25 07:54:50,597 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 339.7MB. Free memory is still 316.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 07:54:50,598 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.06ms. Allocated memory is still 339.7MB. Free memory was 314.5MB in the beginning and 295.1MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 07:54:50,598 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.55ms. Allocated memory is still 339.7MB. Free memory was 295.1MB in the beginning and 293.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 07:54:50,598 INFO L158 Benchmark]: Boogie Preprocessor took 29.30ms. Allocated memory is still 339.7MB. Free memory was 293.4MB in the beginning and 291.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 07:54:50,598 INFO L158 Benchmark]: RCFGBuilder took 429.03ms. Allocated memory is still 339.7MB. Free memory was 291.9MB in the beginning and 275.6MB in the end (delta: 16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-25 07:54:50,598 INFO L158 Benchmark]: TraceAbstraction took 40981.82ms. Allocated memory was 339.7MB in the beginning and 2.3GB in the end (delta: 2.0GB). Free memory was 274.6MB in the beginning and 1.3GB in the end (delta: -991.3MB). Peak memory consumption was 967.3MB. Max. memory is 16.0GB. [2023-08-25 07:54:50,599 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 339.7MB. Free memory is still 316.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 434.06ms. Allocated memory is still 339.7MB. Free memory was 314.5MB in the beginning and 295.1MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.55ms. Allocated memory is still 339.7MB. Free memory was 295.1MB in the beginning and 293.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.30ms. Allocated memory is still 339.7MB. Free memory was 293.4MB in the beginning and 291.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 429.03ms. Allocated memory is still 339.7MB. Free memory was 291.9MB in the beginning and 275.6MB in the end (delta: 16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 40981.82ms. Allocated memory was 339.7MB in the beginning and 2.3GB in the end (delta: 2.0GB). Free memory was 274.6MB in the beginning and 1.3GB in the end (delta: -991.3MB). Peak memory consumption was 967.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 77 PlacesBefore, 24 PlacesAfterwards, 76 TransitionsBefore, 19 TransitionsAfterwards, 1792 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 78 TotalNumberOfCompositions, 2074 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1641, independent: 1592, independent conditional: 0, independent unconditional: 1592, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 973, independent: 953, independent conditional: 0, independent unconditional: 953, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1641, independent: 639, independent conditional: 0, independent unconditional: 639, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 973, unknown conditional: 0, unknown unconditional: 973] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 693]: assertion can be violated assertion can be violated We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-2] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=-1] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] EXPR 0 i >= (2*20 +6) [L716] 0 int condI = i >= (2*20 +6); VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, condI=0, i=7, id1={5:0}, id2={3:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=11] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=14] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=16] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=18] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=20] [L704] COND TRUE 2 k < 20 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=20, k=20] [L719] EXPR 0 j >= (2*20 +6) [L719] 0 int condJ = j >= (2*20 +6); [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) [L693] 0 __assert_fail ("0", "triangular-longest-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=20, k=20] - UnprovableResult [Line: 716]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 101 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 40.8s, OverallIterations: 19, TraceHistogramMax: 20, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 28.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4917 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4917 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 478 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3411 IncrementalHoareTripleChecker+Invalid, 3889 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 478 mSolverCounterUnsat, 0 mSDtfsCounter, 3411 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 940 GetRequests, 250 SyntacticMatches, 34 SemanticMatches, 656 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16672 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17596occurred in iteration=17, InterpolantAutomatonStates: 452, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 526 NumberOfCodeBlocks, 525 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 647 ConstructedInterpolants, 0 QuantifiedInterpolants, 2583 SizeOfPredicates, 120 NumberOfNonLiveVariables, 2022 ConjunctsInSsa, 182 ConjunctsInUnsatCore, 38 InterpolantComputations, 8 PerfectInterpolantSequences, 24/1776 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-25 07:54:50,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...