/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:33:04,074 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:33:04,150 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-SemanticLbe.epf [2023-11-17 16:33:04,175 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:33:04,175 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:33:04,176 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:33:04,176 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:33:04,176 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:33:04,177 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:33:04,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:33:04,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:33:04,181 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:33:04,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:33:04,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:33:04,183 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:33:04,183 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:33:04,183 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:33:04,183 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:33:04,184 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:33:04,184 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:33:04,184 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:33:04,185 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:33:04,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:33:04,185 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:33:04,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:33:04,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:33:04,186 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:33:04,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:33:04,186 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:33:04,186 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:33:04,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:33:04,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:33:04,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:33:04,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:33:04,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:33:04,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:33:04,420 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:33:04,421 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:33:04,422 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-11-17 16:33:05,531 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:33:05,729 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:33:05,730 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-11-17 16:33:05,737 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e32cbc5d0/3d1064be79f040508b44d1d5c921cce4/FLAG5ee64e352 [2023-11-17 16:33:05,751 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e32cbc5d0/3d1064be79f040508b44d1d5c921cce4 [2023-11-17 16:33:05,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:33:05,753 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:33:05,754 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:33:05,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:33:05,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:33:05,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:33:05" (1/1) ... [2023-11-17 16:33:05,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db7affb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:05, skipping insertion in model container [2023-11-17 16:33:05,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:33:05" (1/1) ... [2023-11-17 16:33:05,788 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:33:05,925 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2862,2875] [2023-11-17 16:33:05,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:33:05,940 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:33:05,961 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c[2862,2875] [2023-11-17 16:33:05,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:33:05,972 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:33:05,972 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:33:05,978 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:33:05,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:05 WrapperNode [2023-11-17 16:33:05,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:33:05,980 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:33:05,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:33:05,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:33:05,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:05" (1/1) ... [2023-11-17 16:33:06,001 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:05" (1/1) ... [2023-11-17 16:33:06,029 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 240 [2023-11-17 16:33:06,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:33:06,030 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:33:06,030 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:33:06,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:33:06,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:05" (1/1) ... [2023-11-17 16:33:06,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:05" (1/1) ... [2023-11-17 16:33:06,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:05" (1/1) ... [2023-11-17 16:33:06,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:05" (1/1) ... [2023-11-17 16:33:06,060 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:05" (1/1) ... [2023-11-17 16:33:06,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:05" (1/1) ... [2023-11-17 16:33:06,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:05" (1/1) ... [2023-11-17 16:33:06,078 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:05" (1/1) ... [2023-11-17 16:33:06,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:33:06,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:33:06,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:33:06,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:33:06,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:05" (1/1) ... [2023-11-17 16:33:06,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:33:06,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:33:06,125 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) [2023-11-17 16:33:06,155 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 [2023-11-17 16:33:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:33:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:33:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:33:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:33:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:33:06,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:33:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:33:06,166 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:33:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:33:06,166 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:33:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:33:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:33:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:33:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 16:33:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:33:06,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:33:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:33:06,169 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 16:33:06,263 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:33:06,265 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:33:06,753 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:33:06,826 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:33:06,826 INFO L307 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-17 16:33:06,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:33:06 BoogieIcfgContainer [2023-11-17 16:33:06,828 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:33:06,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:33:06,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:33:06,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:33:06,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:33:05" (1/3) ... [2023-11-17 16:33:06,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ac21c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:33:06, skipping insertion in model container [2023-11-17 16:33:06,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:33:05" (2/3) ... [2023-11-17 16:33:06,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59ac21c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:33:06, skipping insertion in model container [2023-11-17 16:33:06,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:33:06" (3/3) ... [2023-11-17 16:33:06,835 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2023-11-17 16:33:06,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:33:06,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:33:06,851 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:33:06,969 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 16:33:07,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 324 transitions, 669 flow [2023-11-17 16:33:07,155 INFO L124 PetriNetUnfolderBase]: 27/321 cut-off events. [2023-11-17 16:33:07,155 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:33:07,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 321 events. 27/321 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 247 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 251. Up to 2 conditions per place. [2023-11-17 16:33:07,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 324 transitions, 669 flow [2023-11-17 16:33:07,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 310 transitions, 638 flow [2023-11-17 16:33:07,180 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:33:07,197 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 310 transitions, 638 flow [2023-11-17 16:33:07,201 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 310 transitions, 638 flow [2023-11-17 16:33:07,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 310 transitions, 638 flow [2023-11-17 16:33:07,268 INFO L124 PetriNetUnfolderBase]: 27/310 cut-off events. [2023-11-17 16:33:07,268 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:33:07,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 310 events. 27/310 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 247 event pairs, 0 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 251. Up to 2 conditions per place. [2023-11-17 16:33:07,273 INFO L119 LiptonReduction]: Number of co-enabled transitions 3186 [2023-11-17 16:33:15,595 INFO L134 LiptonReduction]: Checked pairs total: 4431 [2023-11-17 16:33:15,596 INFO L136 LiptonReduction]: Total number of compositions: 346 [2023-11-17 16:33:15,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:33:15,614 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=LoopHeads, 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;@5c4adc6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:33:15,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 16:33:15,644 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:33:15,644 INFO L124 PetriNetUnfolderBase]: 8/34 cut-off events. [2023-11-17 16:33:15,644 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:33:15,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:15,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:33:15,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:15,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:15,650 INFO L85 PathProgramCache]: Analyzing trace with hash -189290659, now seen corresponding path program 1 times [2023-11-17 16:33:15,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:15,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321010728] [2023-11-17 16:33:15,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:15,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:33:16,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:16,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321010728] [2023-11-17 16:33:16,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321010728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:33:16,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:33:16,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 16:33:16,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186966218] [2023-11-17 16:33:16,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:33:16,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:33:16,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:33:16,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:33:16,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:33:16,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 670 [2023-11-17 16:33:16,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:16,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:33:16,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 670 [2023-11-17 16:33:16,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:33:16,330 INFO L124 PetriNetUnfolderBase]: 660/923 cut-off events. [2023-11-17 16:33:16,331 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-11-17 16:33:16,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1926 conditions, 923 events. 660/923 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2788 event pairs, 415 based on Foata normal form. 0/678 useless extension candidates. Maximal degree in co-relation 1688. Up to 923 conditions per place. [2023-11-17 16:33:16,339 INFO L140 encePairwiseOnDemand]: 667/670 looper letters, 34 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-11-17 16:33:16,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 162 flow [2023-11-17 16:33:16,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:33:16,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:33:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2023-11-17 16:33:16,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034825870646766 [2023-11-17 16:33:16,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2023-11-17 16:33:16,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2023-11-17 16:33:16,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:33:16,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2023-11-17 16:33:16,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:16,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:16,379 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:16,380 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 88 flow. Second operand 3 states and 811 transitions. [2023-11-17 16:33:16,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 162 flow [2023-11-17 16:33:16,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 16:33:16,387 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 88 flow [2023-11-17 16:33:16,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2023-11-17 16:33:16,391 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2023-11-17 16:33:16,391 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 88 flow [2023-11-17 16:33:16,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 265.3333333333333) internal successors, (796), 3 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:16,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:16,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:33:16,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:33:16,393 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:16,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:16,401 INFO L85 PathProgramCache]: Analyzing trace with hash -551627445, now seen corresponding path program 1 times [2023-11-17 16:33:16,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:16,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130623194] [2023-11-17 16:33:16,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:16,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:33:16,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:16,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130623194] [2023-11-17 16:33:16,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130623194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:33:16,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:33:16,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:33:16,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685454711] [2023-11-17 16:33:16,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:33:16,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:33:16,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:33:16,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:33:16,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:33:16,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 670 [2023-11-17 16:33:16,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:16,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:33:16,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 670 [2023-11-17 16:33:16,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:33:16,722 INFO L124 PetriNetUnfolderBase]: 660/925 cut-off events. [2023-11-17 16:33:16,722 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-17 16:33:16,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1888 conditions, 925 events. 660/925 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2782 event pairs, 415 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 1877. Up to 922 conditions per place. [2023-11-17 16:33:16,727 INFO L140 encePairwiseOnDemand]: 663/670 looper letters, 32 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2023-11-17 16:33:16,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 168 flow [2023-11-17 16:33:16,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:33:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:33:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1024 transitions. [2023-11-17 16:33:16,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382089552238806 [2023-11-17 16:33:16,732 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1024 transitions. [2023-11-17 16:33:16,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1024 transitions. [2023-11-17 16:33:16,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:33:16,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1024 transitions. [2023-11-17 16:33:16,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:16,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:16,740 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 670.0) internal successors, (3350), 5 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:16,740 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 88 flow. Second operand 4 states and 1024 transitions. [2023-11-17 16:33:16,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 168 flow [2023-11-17 16:33:16,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 164 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 16:33:16,742 INFO L231 Difference]: Finished difference. Result has 37 places, 38 transitions, 112 flow [2023-11-17 16:33:16,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=37, PETRI_TRANSITIONS=38} [2023-11-17 16:33:16,743 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-11-17 16:33:16,744 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 38 transitions, 112 flow [2023-11-17 16:33:16,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 251.75) internal successors, (1007), 4 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:16,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:16,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:33:16,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:33:16,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:16,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:16,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2053440667, now seen corresponding path program 1 times [2023-11-17 16:33:16,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:16,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434678828] [2023-11-17 16:33:16,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:16,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:33:16,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:16,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434678828] [2023-11-17 16:33:16,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434678828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:33:16,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:33:16,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 16:33:16,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878072085] [2023-11-17 16:33:16,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:33:16,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:33:16,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:33:16,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:33:16,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:33:16,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 670 [2023-11-17 16:33:16,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 38 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:16,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:33:16,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 670 [2023-11-17 16:33:16,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:33:17,090 INFO L124 PetriNetUnfolderBase]: 1207/1683 cut-off events. [2023-11-17 16:33:17,090 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-17 16:33:17,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3435 conditions, 1683 events. 1207/1683 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5997 event pairs, 357 based on Foata normal form. 1/1225 useless extension candidates. Maximal degree in co-relation 3415. Up to 980 conditions per place. [2023-11-17 16:33:17,098 INFO L140 encePairwiseOnDemand]: 665/670 looper letters, 58 selfloop transitions, 4 changer transitions 1/63 dead transitions. [2023-11-17 16:33:17,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 63 transitions, 293 flow [2023-11-17 16:33:17,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:33:17,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:33:17,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 910 transitions. [2023-11-17 16:33:17,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527363184079602 [2023-11-17 16:33:17,101 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 910 transitions. [2023-11-17 16:33:17,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 910 transitions. [2023-11-17 16:33:17,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:33:17,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 910 transitions. [2023-11-17 16:33:17,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:17,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:17,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 670.0) internal successors, (2680), 4 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:17,108 INFO L175 Difference]: Start difference. First operand has 37 places, 38 transitions, 112 flow. Second operand 3 states and 910 transitions. [2023-11-17 16:33:17,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 63 transitions, 293 flow [2023-11-17 16:33:17,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 63 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:33:17,110 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 137 flow [2023-11-17 16:33:17,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2023-11-17 16:33:17,111 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-11-17 16:33:17,111 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 137 flow [2023-11-17 16:33:17,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:17,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:17,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:33:17,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:33:17,112 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:17,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:17,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1619819680, now seen corresponding path program 1 times [2023-11-17 16:33:17,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:17,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377958222] [2023-11-17 16:33:17,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:17,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:33:17,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:17,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377958222] [2023-11-17 16:33:17,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377958222] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:17,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224915205] [2023-11-17 16:33:17,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:17,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:17,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:33:17,245 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) [2023-11-17 16:33:17,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 16:33:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:17,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 16:33:17,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:33:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:33:17,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:33:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:33:17,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224915205] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:33:17,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:33:17,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-17 16:33:17,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938751767] [2023-11-17 16:33:17,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:33:17,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:33:17,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:33:17,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:33:17,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:33:17,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 670 [2023-11-17 16:33:17,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 137 flow. Second operand has 12 states, 12 states have (on average 245.08333333333334) internal successors, (2941), 12 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:17,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:33:17,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 670 [2023-11-17 16:33:17,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:33:18,009 INFO L124 PetriNetUnfolderBase]: 1970/2819 cut-off events. [2023-11-17 16:33:18,009 INFO L125 PetriNetUnfolderBase]: For 245/245 co-relation queries the response was YES. [2023-11-17 16:33:18,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6265 conditions, 2819 events. 1970/2819 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11192 event pairs, 808 based on Foata normal form. 0/2145 useless extension candidates. Maximal degree in co-relation 3758. Up to 1349 conditions per place. [2023-11-17 16:33:18,023 INFO L140 encePairwiseOnDemand]: 659/670 looper letters, 98 selfloop transitions, 22 changer transitions 0/120 dead transitions. [2023-11-17 16:33:18,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 120 transitions, 617 flow [2023-11-17 16:33:18,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 16:33:18,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 16:33:18,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2533 transitions. [2023-11-17 16:33:18,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3780597014925373 [2023-11-17 16:33:18,030 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2533 transitions. [2023-11-17 16:33:18,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2533 transitions. [2023-11-17 16:33:18,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:33:18,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2533 transitions. [2023-11-17 16:33:18,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 253.3) internal successors, (2533), 10 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:18,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 670.0) internal successors, (7370), 11 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:18,059 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 670.0) internal successors, (7370), 11 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:18,059 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 137 flow. Second operand 10 states and 2533 transitions. [2023-11-17 16:33:18,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 120 transitions, 617 flow [2023-11-17 16:33:18,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 120 transitions, 607 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:33:18,066 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 292 flow [2023-11-17 16:33:18,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=292, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2023-11-17 16:33:18,068 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 15 predicate places. [2023-11-17 16:33:18,068 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 292 flow [2023-11-17 16:33:18,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 245.08333333333334) internal successors, (2941), 12 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:18,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:18,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:33:18,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 16:33:18,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:18,277 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:18,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:18,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1164910756, now seen corresponding path program 1 times [2023-11-17 16:33:18,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:18,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262250859] [2023-11-17 16:33:18,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:18,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:33:18,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:18,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262250859] [2023-11-17 16:33:18,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262250859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:18,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984531582] [2023-11-17 16:33:18,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:18,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:18,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:33:18,416 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) [2023-11-17 16:33:18,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 16:33:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:18,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 16:33:18,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:33:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:33:18,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:33:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:33:18,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984531582] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:33:18,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:33:18,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-17 16:33:18,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106756528] [2023-11-17 16:33:18,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:33:18,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:33:18,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:33:18,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:33:18,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:33:18,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 670 [2023-11-17 16:33:18,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 292 flow. Second operand has 12 states, 12 states have (on average 241.33333333333334) internal successors, (2896), 12 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:18,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:33:18,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 670 [2023-11-17 16:33:18,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:33:19,019 INFO L124 PetriNetUnfolderBase]: 1381/1970 cut-off events. [2023-11-17 16:33:19,020 INFO L125 PetriNetUnfolderBase]: For 327/327 co-relation queries the response was YES. [2023-11-17 16:33:19,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 1970 events. 1381/1970 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7120 event pairs, 859 based on Foata normal form. 0/1576 useless extension candidates. Maximal degree in co-relation 4154. Up to 1681 conditions per place. [2023-11-17 16:33:19,029 INFO L140 encePairwiseOnDemand]: 659/670 looper letters, 35 selfloop transitions, 9 changer transitions 41/85 dead transitions. [2023-11-17 16:33:19,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 85 transitions, 544 flow [2023-11-17 16:33:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:33:19,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:33:19,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2226 transitions. [2023-11-17 16:33:19,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691542288557214 [2023-11-17 16:33:19,036 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2226 transitions. [2023-11-17 16:33:19,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2226 transitions. [2023-11-17 16:33:19,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:33:19,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2226 transitions. [2023-11-17 16:33:19,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 247.33333333333334) internal successors, (2226), 9 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:19,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 670.0) internal successors, (6700), 10 states have internal predecessors, (6700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:19,053 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 670.0) internal successors, (6700), 10 states have internal predecessors, (6700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:19,053 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 292 flow. Second operand 9 states and 2226 transitions. [2023-11-17 16:33:19,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 85 transitions, 544 flow [2023-11-17 16:33:19,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 85 transitions, 516 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-17 16:33:19,058 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 210 flow [2023-11-17 16:33:19,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=210, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2023-11-17 16:33:19,060 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 24 predicate places. [2023-11-17 16:33:19,060 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 210 flow [2023-11-17 16:33:19,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 241.33333333333334) internal successors, (2896), 12 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:19,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:19,062 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:33:19,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 16:33:19,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:19,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:19,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1227800752, now seen corresponding path program 2 times [2023-11-17 16:33:19,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:19,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168556316] [2023-11-17 16:33:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:19,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 16:33:19,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:19,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168556316] [2023-11-17 16:33:19,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168556316] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:19,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313138685] [2023-11-17 16:33:19,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:33:19,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:19,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:33:19,417 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) [2023-11-17 16:33:19,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 16:33:19,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:33:19,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:33:19,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 16:33:19,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:33:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 16:33:19,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:33:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 16:33:19,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313138685] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:19,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:33:19,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-11-17 16:33:19,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118272265] [2023-11-17 16:33:19,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:33:19,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:33:19,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:33:19,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:33:19,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:33:19,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 670 [2023-11-17 16:33:19,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 242.66666666666666) internal successors, (1456), 6 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:19,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:33:19,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 670 [2023-11-17 16:33:19,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:33:19,877 INFO L124 PetriNetUnfolderBase]: 1132/1564 cut-off events. [2023-11-17 16:33:19,877 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2023-11-17 16:33:19,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4108 conditions, 1564 events. 1132/1564 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5714 event pairs, 204 based on Foata normal form. 0/1234 useless extension candidates. Maximal degree in co-relation 4085. Up to 1065 conditions per place. [2023-11-17 16:33:19,887 INFO L140 encePairwiseOnDemand]: 663/670 looper letters, 52 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2023-11-17 16:33:19,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 381 flow [2023-11-17 16:33:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:33:19,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:33:19,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1481 transitions. [2023-11-17 16:33:19,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36840796019900496 [2023-11-17 16:33:19,893 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1481 transitions. [2023-11-17 16:33:19,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1481 transitions. [2023-11-17 16:33:19,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:33:19,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1481 transitions. [2023-11-17 16:33:19,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 246.83333333333334) internal successors, (1481), 6 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:19,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:19,902 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:19,902 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 210 flow. Second operand 6 states and 1481 transitions. [2023-11-17 16:33:19,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 381 flow [2023-11-17 16:33:19,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 325 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-11-17 16:33:19,910 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 202 flow [2023-11-17 16:33:19,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-11-17 16:33:19,912 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-11-17 16:33:19,912 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 202 flow [2023-11-17 16:33:19,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.66666666666666) internal successors, (1456), 6 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:19,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:19,913 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:33:19,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 16:33:20,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:20,128 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:20,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:20,129 INFO L85 PathProgramCache]: Analyzing trace with hash 238164042, now seen corresponding path program 2 times [2023-11-17 16:33:20,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:20,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924714817] [2023-11-17 16:33:20,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:20,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 16:33:20,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:20,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924714817] [2023-11-17 16:33:20,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924714817] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:20,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104253538] [2023-11-17 16:33:20,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:33:20,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:20,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:33:20,252 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) [2023-11-17 16:33:20,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 16:33:20,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:33:20,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:33:20,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 16:33:20,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:33:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 16:33:20,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:33:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 16:33:20,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104253538] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:20,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:33:20,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-11-17 16:33:20,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000930441] [2023-11-17 16:33:20,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:33:20,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:33:20,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:33:20,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:33:20,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:33:20,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 670 [2023-11-17 16:33:20,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 246.83333333333334) internal successors, (1481), 6 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:20,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:33:20,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 670 [2023-11-17 16:33:20,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:33:20,739 INFO L124 PetriNetUnfolderBase]: 1253/1711 cut-off events. [2023-11-17 16:33:20,739 INFO L125 PetriNetUnfolderBase]: For 736/736 co-relation queries the response was YES. [2023-11-17 16:33:20,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4297 conditions, 1711 events. 1253/1711 cut-off events. For 736/736 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5448 event pairs, 396 based on Foata normal form. 86/1429 useless extension candidates. Maximal degree in co-relation 4262. Up to 897 conditions per place. [2023-11-17 16:33:20,749 INFO L140 encePairwiseOnDemand]: 663/670 looper letters, 60 selfloop transitions, 8 changer transitions 0/68 dead transitions. [2023-11-17 16:33:20,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 418 flow [2023-11-17 16:33:20,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:33:20,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:33:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1508 transitions. [2023-11-17 16:33:20,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37512437810945276 [2023-11-17 16:33:20,753 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1508 transitions. [2023-11-17 16:33:20,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1508 transitions. [2023-11-17 16:33:20,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:33:20,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1508 transitions. [2023-11-17 16:33:20,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.33333333333334) internal successors, (1508), 6 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:20,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:20,763 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:20,763 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 202 flow. Second operand 6 states and 1508 transitions. [2023-11-17 16:33:20,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 418 flow [2023-11-17 16:33:20,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 403 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-17 16:33:20,768 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 229 flow [2023-11-17 16:33:20,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-11-17 16:33:20,769 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 16 predicate places. [2023-11-17 16:33:20,769 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 229 flow [2023-11-17 16:33:20,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.83333333333334) internal successors, (1481), 6 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:20,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:20,770 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:33:20,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 16:33:20,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:20,976 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:20,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:20,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1672692011, now seen corresponding path program 1 times [2023-11-17 16:33:20,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:20,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478894808] [2023-11-17 16:33:20,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:20,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 16:33:21,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:21,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478894808] [2023-11-17 16:33:21,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478894808] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:21,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36834499] [2023-11-17 16:33:21,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:21,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:21,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:33:21,187 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) [2023-11-17 16:33:21,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 16:33:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:21,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 16:33:21,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:33:21,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 16:33:21,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:33:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 16:33:21,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36834499] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:21,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:33:21,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-11-17 16:33:21,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298715002] [2023-11-17 16:33:21,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:33:21,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:33:21,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:33:21,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:33:21,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:33:21,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 670 [2023-11-17 16:33:21,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 247.16666666666666) internal successors, (1483), 6 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:21,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:33:21,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 670 [2023-11-17 16:33:21,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:33:21,700 INFO L124 PetriNetUnfolderBase]: 1656/2252 cut-off events. [2023-11-17 16:33:21,701 INFO L125 PetriNetUnfolderBase]: For 1498/1498 co-relation queries the response was YES. [2023-11-17 16:33:21,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6499 conditions, 2252 events. 1656/2252 cut-off events. For 1498/1498 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7834 event pairs, 734 based on Foata normal form. 0/1810 useless extension candidates. Maximal degree in co-relation 6461. Up to 1709 conditions per place. [2023-11-17 16:33:21,712 INFO L140 encePairwiseOnDemand]: 665/670 looper letters, 69 selfloop transitions, 5 changer transitions 0/74 dead transitions. [2023-11-17 16:33:21,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 74 transitions, 492 flow [2023-11-17 16:33:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:33:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:33:21,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1509 transitions. [2023-11-17 16:33:21,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3753731343283582 [2023-11-17 16:33:21,716 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1509 transitions. [2023-11-17 16:33:21,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1509 transitions. [2023-11-17 16:33:21,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:33:21,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1509 transitions. [2023-11-17 16:33:21,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 251.5) internal successors, (1509), 6 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:21,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:21,725 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 670.0) internal successors, (4690), 7 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:21,725 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 229 flow. Second operand 6 states and 1509 transitions. [2023-11-17 16:33:21,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 74 transitions, 492 flow [2023-11-17 16:33:21,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 74 transitions, 477 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:33:21,731 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 237 flow [2023-11-17 16:33:21,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2023-11-17 16:33:21,732 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 18 predicate places. [2023-11-17 16:33:21,732 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 237 flow [2023-11-17 16:33:21,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 247.16666666666666) internal successors, (1483), 6 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:33:21,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:33:21,732 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:33:21,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 16:33:21,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:21,939 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:33:21,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:33:21,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1452017897, now seen corresponding path program 1 times [2023-11-17 16:33:21,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:33:21,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212806970] [2023-11-17 16:33:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:21,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:33:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:33:24,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:33:24,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212806970] [2023-11-17 16:33:24,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212806970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:33:24,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143558383] [2023-11-17 16:33:24,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:33:24,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:33:24,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:33:24,650 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) [2023-11-17 16:33:24,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 16:33:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:33:24,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-17 16:33:24,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:33:24,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-17 16:33:24,927 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 16:33:24,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-17 16:33:24,999 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:33:24,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2023-11-17 16:33:25,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:33:25,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:33:25,470 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 16:33:25,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2023-11-17 16:33:25,663 INFO L349 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2023-11-17 16:33:25,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 42 [2023-11-17 16:33:27,890 INFO L349 Elim1Store]: treesize reduction 120, result has 78.9 percent of original size [2023-11-17 16:33:27,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 326 treesize of output 632 [2023-11-17 16:35:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-17 16:35:10,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:35:17,171 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 4 c_~B~0.offset)) (.cse3 (+ c_~A~0.offset 4))) (and (or (< c_~maxb~0 (+ |c_thread1Thread1of1ForFork2_#t~mem4| 1)) (let ((.cse0 (+ c_~maxa~0 c_~maxb~0))) (and (<= c_~maxc~0 .cse0) (forall ((v_ArrVal_404 (Array Int Int))) (<= (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_404))) (+ (select (select .cse1 c_~B~0.base) .cse2) (select (select .cse1 c_~A~0.base) .cse3))) .cse0))))) (or (let ((.cse5 (+ (* c_thread1Thread1of1ForFork2_~i~0 4) c_~B~0.offset))) (and (forall ((v_ArrVal_404 (Array Int Int)) (|v_thread2Thread1of1ForFork0_plus_#res#1_54| Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_404))) (or (forall ((~C~0.offset Int)) (<= c_~maxc~0 (+ c_~maxa~0 (select (select (store .cse4 c_~C~0.base (store (select .cse4 c_~C~0.base) (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_54|)) c_~B~0.base) .cse5)))) (< (+ (select (select .cse4 c_~B~0.base) .cse2) (select (select .cse4 c_~A~0.base) .cse3)) |v_thread2Thread1of1ForFork0_plus_#res#1_54|)))) (forall ((v_ArrVal_404 (Array Int Int)) (|v_thread2Thread1of1ForFork0_plus_#res#1_54| Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_404))) (or (forall ((~C~0.offset Int)) (<= |v_thread2Thread1of1ForFork0_plus_#res#1_54| (+ c_~maxa~0 (select (select (store .cse6 c_~C~0.base (store (select .cse6 c_~C~0.base) (+ ~C~0.offset 4) |v_thread2Thread1of1ForFork0_plus_#res#1_54|)) c_~B~0.base) .cse5)))) (< (+ (select (select .cse6 c_~B~0.base) .cse2) (select (select .cse6 c_~A~0.base) .cse3)) |v_thread2Thread1of1ForFork0_plus_#res#1_54|)))))) (< |c_thread1Thread1of1ForFork2_#t~mem4| c_~maxb~0)))) is different from false [2023-11-17 16:35:17,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:35:17,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 992 treesize of output 956 [2023-11-17 16:35:17,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:35:17,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 690 treesize of output 681 [2023-11-17 16:35:17,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:35:17,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 690 treesize of output 681 [2023-11-17 16:35:17,572 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:35:17,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 650 treesize of output 643 [2023-11-17 16:35:22,679 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:35:22,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2023-11-17 16:35:22,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2023-11-17 16:35:22,762 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:35:22,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 140 [2023-11-17 16:35:23,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:35:23,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2023-11-17 16:35:23,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:35:23,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2023-11-17 16:35:23,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-17 16:35:23,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143558383] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:35:23,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:35:23,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 42 [2023-11-17 16:35:23,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035610147] [2023-11-17 16:35:23,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:35:23,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-17 16:35:23,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:23,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-17 16:35:23,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1636, Unknown=3, NotChecked=82, Total=1892 [2023-11-17 16:35:23,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 670 [2023-11-17 16:35:23,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 237 flow. Second operand has 44 states, 44 states have (on average 189.86363636363637) internal successors, (8354), 44 states have internal predecessors, (8354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:23,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:23,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 670 [2023-11-17 16:35:23,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:30,675 INFO L124 PetriNetUnfolderBase]: 4283/5810 cut-off events. [2023-11-17 16:35:30,675 INFO L125 PetriNetUnfolderBase]: For 4228/4228 co-relation queries the response was YES. [2023-11-17 16:35:30,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17959 conditions, 5810 events. 4283/5810 cut-off events. For 4228/4228 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 23474 event pairs, 494 based on Foata normal form. 3/4522 useless extension candidates. Maximal degree in co-relation 17919. Up to 2100 conditions per place. [2023-11-17 16:35:30,718 INFO L140 encePairwiseOnDemand]: 651/670 looper letters, 231 selfloop transitions, 89 changer transitions 3/323 dead transitions. [2023-11-17 16:35:30,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 323 transitions, 1979 flow [2023-11-17 16:35:30,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 16:35:30,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 16:35:30,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5189 transitions. [2023-11-17 16:35:30,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2978760045924225 [2023-11-17 16:35:30,732 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5189 transitions. [2023-11-17 16:35:30,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5189 transitions. [2023-11-17 16:35:30,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:30,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5189 transitions. [2023-11-17 16:35:30,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 199.57692307692307) internal successors, (5189), 26 states have internal predecessors, (5189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:30,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 670.0) internal successors, (18090), 27 states have internal predecessors, (18090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:30,766 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 670.0) internal successors, (18090), 27 states have internal predecessors, (18090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:30,766 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 237 flow. Second operand 26 states and 5189 transitions. [2023-11-17 16:35:30,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 323 transitions, 1979 flow [2023-11-17 16:35:30,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 323 transitions, 1942 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-17 16:35:30,794 INFO L231 Difference]: Finished difference. Result has 87 places, 137 transitions, 978 flow [2023-11-17 16:35:30,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=670, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=978, PETRI_PLACES=87, PETRI_TRANSITIONS=137} [2023-11-17 16:35:30,795 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 50 predicate places. [2023-11-17 16:35:30,796 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 137 transitions, 978 flow [2023-11-17 16:35:30,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 189.86363636363637) internal successors, (8354), 44 states have internal predecessors, (8354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:30,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:30,799 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:30,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 16:35:31,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:31,004 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:35:31,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:31,005 INFO L85 PathProgramCache]: Analyzing trace with hash 783031477, now seen corresponding path program 2 times [2023-11-17 16:35:31,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:31,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333576938] [2023-11-17 16:35:31,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:31,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-17 16:35:32,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:32,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333576938] [2023-11-17 16:35:32,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333576938] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:35:32,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462828925] [2023-11-17 16:35:32,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:35:32,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:32,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:35:32,745 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) [2023-11-17 16:35:32,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 16:35:32,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:35:32,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:35:32,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-17 16:35:32,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:35:33,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:35:33,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2023-11-17 16:35:33,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:35:33,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:35:33,743 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 16:35:33,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 81 [2023-11-17 16:35:34,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:35:34,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:35:34,029 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 16:35:34,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 81 [2023-11-17 16:35:34,161 INFO L349 Elim1Store]: treesize reduction 44, result has 47.0 percent of original size [2023-11-17 16:35:34,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 110 [2023-11-17 16:35:43,323 WARN L293 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 846 DAG size of output: 808 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 16:35:43,323 INFO L349 Elim1Store]: treesize reduction 228, result has 87.0 percent of original size [2023-11-17 16:35:43,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 21 select indices, 21 select index equivalence classes, 0 disjoint index pairs (out of 210 index pairs), introduced 21 new quantified variables, introduced 210 case distinctions, treesize of input 677 treesize of output 1915 Received shutdown request... [2023-11-17 16:41:51,021 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:41:51,035 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 16:41:51,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 16:41:51,054 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:41:51,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:41:51,242 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-189-6-11-6-11-6-9-6-5-5-1 context. [2023-11-17 16:41:51,243 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 16:41:51,243 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 16:41:51,244 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 16:41:51,244 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1] [2023-11-17 16:41:51,247 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:41:51,247 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:41:51,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:41:51 BasicIcfg [2023-11-17 16:41:51,250 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:41:51,250 INFO L158 Benchmark]: Toolchain (without parser) took 525496.99ms. Allocated memory was 309.3MB in the beginning and 815.8MB in the end (delta: 506.5MB). Free memory was 255.9MB in the beginning and 410.8MB in the end (delta: -154.9MB). Peak memory consumption was 502.6MB. Max. memory is 8.0GB. [2023-11-17 16:41:51,251 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 183.5MB. Free memory is still 133.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:41:51,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.54ms. Allocated memory is still 309.3MB. Free memory was 255.9MB in the beginning and 243.8MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 16:41:51,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.21ms. Allocated memory is still 309.3MB. Free memory was 243.3MB in the beginning and 241.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:41:51,251 INFO L158 Benchmark]: Boogie Preprocessor took 51.76ms. Allocated memory is still 309.3MB. Free memory was 241.2MB in the beginning and 239.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:41:51,252 INFO L158 Benchmark]: RCFGBuilder took 745.03ms. Allocated memory is still 309.3MB. Free memory was 238.6MB in the beginning and 202.4MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-11-17 16:41:51,252 INFO L158 Benchmark]: TraceAbstraction took 524420.33ms. Allocated memory was 309.3MB in the beginning and 815.8MB in the end (delta: 506.5MB). Free memory was 201.9MB in the beginning and 410.8MB in the end (delta: -208.9MB). Peak memory consumption was 449.1MB. Max. memory is 8.0GB. [2023-11-17 16:41:51,255 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 183.5MB. Free memory is still 133.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 224.54ms. Allocated memory is still 309.3MB. Free memory was 255.9MB in the beginning and 243.8MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.21ms. Allocated memory is still 309.3MB. Free memory was 243.3MB in the beginning and 241.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 51.76ms. Allocated memory is still 309.3MB. Free memory was 241.2MB in the beginning and 239.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 745.03ms. Allocated memory is still 309.3MB. Free memory was 238.6MB in the beginning and 202.4MB in the end (delta: 36.2MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * TraceAbstraction took 524420.33ms. Allocated memory was 309.3MB in the beginning and 815.8MB in the end (delta: 506.5MB). Free memory was 201.9MB in the beginning and 410.8MB in the end (delta: -208.9MB). Peak memory consumption was 449.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.4s, 293 PlacesBefore, 37 PlacesAfterwards, 310 TransitionsBefore, 35 TransitionsAfterwards, 3186 CoEnabledTransitionPairs, 7 FixpointIterations, 209 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 63 TrivialYvCompositions, 14 ConcurrentYvCompositions, 19 ChoiceCompositions, 346 TotalNumberOfCompositions, 4431 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3335, independent: 3233, independent conditional: 0, independent unconditional: 3233, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2265, independent: 2230, independent conditional: 0, independent unconditional: 2230, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2265, independent: 2230, independent conditional: 0, independent unconditional: 2230, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 35, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 104, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3335, independent: 1003, independent conditional: 0, independent unconditional: 1003, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 2265, unknown conditional: 0, unknown unconditional: 2265] , Statistics on independence cache: Total cache size (in pairs): 149, Positive cache size: 134, Positive conditional cache size: 0, Positive unconditional cache size: 134, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-189-6-11-6-11-6-9-6-5-5-1 context. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-189-6-11-6-11-6-9-6-5-5-1 context. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-189-6-11-6-11-6-9-6-5-5-1 context. - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ATOM-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-189-6-11-6-11-6-9-6-5-5-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 349 locations, 4 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: 524.2s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 735 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 735 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 297 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4070 IncrementalHoareTripleChecker+Invalid, 4481 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 0 mSDtfsCounter, 4070 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 442 GetRequests, 307 SyntacticMatches, 6 SemanticMatches, 129 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=978occurred in iteration=9, InterpolantAutomatonStates: 73, 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, 123.4s InterpolantComputationTime, 436 NumberOfCodeBlocks, 436 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 598 ConstructedInterpolants, 16 QuantifiedInterpolants, 6406 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1971 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 120/157 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 could not prove your program: Timeout Completed graceful shutdown