/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 07:05:47,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 07:05:47,459 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 07:05:47,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 07:05:47,475 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 07:05:47,496 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 07:05:47,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 07:05:47,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 07:05:47,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 07:05:47,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 07:05:47,497 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 07:05:47,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 07:05:47,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 07:05:47,498 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 07:05:47,498 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 07:05:47,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 07:05:47,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 07:05:47,499 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 07:05:47,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 07:05:47,500 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 07:05:47,500 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 07:05:47,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 07:05:47,500 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 07:05:47,501 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 07:05:47,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 07:05:47,501 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 07:05:47,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 07:05:47,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 07:05:47,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 07:05:47,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 07:05:47,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 07:05:47,503 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 07:05:47,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 07:05:47,503 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 07:05:47,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 07:05:47,504 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 07:05:47,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 07:05:47,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 07:05:47,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 07:05:47,769 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 07:05:47,771 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 07:05:47,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2023-08-24 07:05:48,801 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 07:05:48,976 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 07:05:48,976 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2023-08-24 07:05:48,981 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c10ba876f/8abc08a19f804b069fa59ea056557ab6/FLAG83b1ab4dd [2023-08-24 07:05:48,993 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c10ba876f/8abc08a19f804b069fa59ea056557ab6 [2023-08-24 07:05:48,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 07:05:48,999 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 07:05:49,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 07:05:49,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 07:05:49,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 07:05:49,004 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 07:05:48" (1/1) ... [2023-08-24 07:05:49,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c1f08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:05:49, skipping insertion in model container [2023-08-24 07:05:49,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 07:05:48" (1/1) ... [2023-08-24 07:05:49,022 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 07:05:49,157 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/array-eq-trans.wvr.c[2737,2750] [2023-08-24 07:05:49,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 07:05:49,170 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 07:05:49,200 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/array-eq-trans.wvr.c[2737,2750] [2023-08-24 07:05:49,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 07:05:49,210 INFO L206 MainTranslator]: Completed translation [2023-08-24 07:05:49,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:05:49 WrapperNode [2023-08-24 07:05:49,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 07:05:49,211 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 07:05:49,211 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 07:05:49,211 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 07:05:49,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:05:49" (1/1) ... [2023-08-24 07:05:49,229 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:05:49" (1/1) ... [2023-08-24 07:05:49,250 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 213 [2023-08-24 07:05:49,250 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 07:05:49,250 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 07:05:49,250 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 07:05:49,250 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 07:05:49,255 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:05:49" (1/1) ... [2023-08-24 07:05:49,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:05:49" (1/1) ... [2023-08-24 07:05:49,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:05:49" (1/1) ... [2023-08-24 07:05:49,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:05:49" (1/1) ... [2023-08-24 07:05:49,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:05:49" (1/1) ... [2023-08-24 07:05:49,272 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:05:49" (1/1) ... [2023-08-24 07:05:49,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:05:49" (1/1) ... [2023-08-24 07:05:49,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:05:49" (1/1) ... [2023-08-24 07:05:49,276 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 07:05:49,287 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 07:05:49,288 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 07:05:49,288 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 07:05:49,288 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:05:49" (1/1) ... [2023-08-24 07:05:49,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 07:05:49,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:05:49,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 07:05:49,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 07:05:49,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 07:05:49,338 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 07:05:49,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 07:05:49,338 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 07:05:49,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 07:05:49,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 07:05:49,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 07:05:49,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 07:05:49,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 07:05:49,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 07:05:49,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 07:05:49,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 07:05:49,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 07:05:49,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 07:05:49,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 07:05:49,340 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 07:05:49,410 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 07:05:49,412 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 07:05:49,664 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 07:05:49,672 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 07:05:49,672 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-24 07:05:49,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 07:05:49 BoogieIcfgContainer [2023-08-24 07:05:49,674 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 07:05:49,676 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 07:05:49,676 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 07:05:49,681 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 07:05:49,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 07:05:48" (1/3) ... [2023-08-24 07:05:49,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7601ca0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 07:05:49, skipping insertion in model container [2023-08-24 07:05:49,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:05:49" (2/3) ... [2023-08-24 07:05:49,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7601ca0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 07:05:49, skipping insertion in model container [2023-08-24 07:05:49,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 07:05:49" (3/3) ... [2023-08-24 07:05:49,683 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2023-08-24 07:05:49,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 07:05:49,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 07:05:49,696 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 07:05:49,799 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 07:05:49,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 290 transitions, 604 flow [2023-08-24 07:05:49,887 INFO L124 PetriNetUnfolderBase]: 30/287 cut-off events. [2023-08-24 07:05:49,887 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 07:05:49,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 287 events. 30/287 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 246 event pairs, 0 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 192. Up to 3 conditions per place. [2023-08-24 07:05:49,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 270 places, 290 transitions, 604 flow [2023-08-24 07:05:49,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 277 transitions, 572 flow [2023-08-24 07:05:49,899 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 07:05:49,904 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 277 transitions, 572 flow [2023-08-24 07:05:49,906 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 277 transitions, 572 flow [2023-08-24 07:05:49,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 277 transitions, 572 flow [2023-08-24 07:05:49,970 INFO L124 PetriNetUnfolderBase]: 30/277 cut-off events. [2023-08-24 07:05:49,970 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 07:05:49,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 277 events. 30/277 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 246 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 192. Up to 3 conditions per place. [2023-08-24 07:05:49,973 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-08-24 07:05:58,488 INFO L134 LiptonReduction]: Checked pairs total: 3886 [2023-08-24 07:05:58,488 INFO L136 LiptonReduction]: Total number of compositions: 325 [2023-08-24 07:05:58,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 07:05:58,514 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2cefb37c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 07:05:58,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 07:05:58,531 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 07:05:58,531 INFO L124 PetriNetUnfolderBase]: 8/28 cut-off events. [2023-08-24 07:05:58,531 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 07:05:58,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:05:58,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:05:58,532 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)] === [2023-08-24 07:05:58,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:05:58,536 INFO L85 PathProgramCache]: Analyzing trace with hash 906993961, now seen corresponding path program 1 times [2023-08-24 07:05:58,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:05:58,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222687731] [2023-08-24 07:05:58,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:05:58,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:05:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:05:59,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:05:59,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:05:59,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222687731] [2023-08-24 07:05:59,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222687731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:05:59,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:05:59,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 07:05:59,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808995193] [2023-08-24 07:05:59,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:05:59,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 07:05:59,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:05:59,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 07:05:59,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 07:05:59,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 615 [2023-08-24 07:05:59,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 219.75) internal successors, (879), 4 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:05:59,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:05:59,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 615 [2023-08-24 07:05:59,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:05:59,249 INFO L124 PetriNetUnfolderBase]: 385/548 cut-off events. [2023-08-24 07:05:59,249 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-24 07:05:59,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 548 events. 385/548 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1443 event pairs, 186 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 484. Up to 289 conditions per place. [2023-08-24 07:05:59,253 INFO L140 encePairwiseOnDemand]: 610/615 looper letters, 28 selfloop transitions, 2 changer transitions 25/55 dead transitions. [2023-08-24 07:05:59,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 55 transitions, 256 flow [2023-08-24 07:05:59,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 07:05:59,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 07:05:59,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 917 transitions. [2023-08-24 07:05:59,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727642276422764 [2023-08-24 07:05:59,266 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 917 transitions. [2023-08-24 07:05:59,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 917 transitions. [2023-08-24 07:05:59,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:05:59,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 917 transitions. [2023-08-24 07:05:59,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.25) internal successors, (917), 4 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:05:59,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 615.0) internal successors, (3075), 5 states have internal predecessors, (3075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:05:59,281 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 615.0) internal successors, (3075), 5 states have internal predecessors, (3075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:05:59,282 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 76 flow. Second operand 4 states and 917 transitions. [2023-08-24 07:05:59,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 55 transitions, 256 flow [2023-08-24 07:05:59,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 55 transitions, 232 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 07:05:59,287 INFO L231 Difference]: Finished difference. Result has 30 places, 30 transitions, 80 flow [2023-08-24 07:05:59,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=30, PETRI_TRANSITIONS=30} [2023-08-24 07:05:59,291 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2023-08-24 07:05:59,291 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 30 transitions, 80 flow [2023-08-24 07:05:59,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.75) internal successors, (879), 4 states have internal predecessors, (879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:05:59,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:05:59,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:05:59,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 07:05:59,292 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)] === [2023-08-24 07:05:59,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:05:59,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1682592384, now seen corresponding path program 1 times [2023-08-24 07:05:59,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:05:59,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881366598] [2023-08-24 07:05:59,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:05:59,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:05:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:05:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:05:59,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:05:59,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881366598] [2023-08-24 07:05:59,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881366598] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:05:59,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568226198] [2023-08-24 07:05:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:05:59,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:05:59,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:05:59,484 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:05:59,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 07:05:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:05:59,614 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 07:05:59,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:05:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:05:59,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:05:59,909 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:05:59,910 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 262 [2023-08-24 07:06:04,361 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:04,777 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:06,178 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:06,318 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:06,763 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:06,969 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,099 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,129 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,161 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,185 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:07,205 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,230 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,256 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,290 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,314 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:07,334 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,356 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,470 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,532 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,580 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,704 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,795 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,819 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:07,842 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,864 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:07,886 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:08,032 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:08,097 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:08,133 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:08,165 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:08,198 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:08,229 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:08,482 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:08,504 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:08,530 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:08,562 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:08,606 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:08,721 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:08,827 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:08,892 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:08,915 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:08,942 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:08,978 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:09,021 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:09,303 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:09,534 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:09,658 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:09,744 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:09,988 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:10,343 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:10,917 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:10,974 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:15,202 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:15,219 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:15,239 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:15,295 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:15,318 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:15,361 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:15,378 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:15,398 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:15,453 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:15,525 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:15,556 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:15,598 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:15,630 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:15,661 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:15,751 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:15,782 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:15,815 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:15,840 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:15,843 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:15,878 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:15,886 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:16,002 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:16,109 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:16,401 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:16,644 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:16,689 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:16,768 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:16,798 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:16,838 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:16,878 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:16,913 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:17,340 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:17,914 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:17,934 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:17,960 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:18,010 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-24 07:06:18,056 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-24 07:06:18,225 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:06:18,225 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 118 [2023-08-24 07:06:18,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:06:18,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568226198] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 07:06:18,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 07:06:18,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 10 [2023-08-24 07:06:18,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564278126] [2023-08-24 07:06:18,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:06:18,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:06:18,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:06:18,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:06:18,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-24 07:06:18,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 615 [2023-08-24 07:06:18,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 30 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:18,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:06:18,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 615 [2023-08-24 07:06:18,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:06:18,663 INFO L124 PetriNetUnfolderBase]: 400/578 cut-off events. [2023-08-24 07:06:18,663 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-08-24 07:06:18,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1253 conditions, 578 events. 400/578 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1700 event pairs, 93 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 1241. Up to 268 conditions per place. [2023-08-24 07:06:18,667 INFO L140 encePairwiseOnDemand]: 609/615 looper letters, 44 selfloop transitions, 4 changer transitions 17/65 dead transitions. [2023-08-24 07:06:18,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 65 transitions, 296 flow [2023-08-24 07:06:18,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 07:06:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 07:06:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1111 transitions. [2023-08-24 07:06:18,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3613008130081301 [2023-08-24 07:06:18,670 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1111 transitions. [2023-08-24 07:06:18,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1111 transitions. [2023-08-24 07:06:18,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:06:18,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1111 transitions. [2023-08-24 07:06:18,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 222.2) internal successors, (1111), 5 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:18,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 615.0) internal successors, (3690), 6 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:18,677 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 615.0) internal successors, (3690), 6 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:18,678 INFO L175 Difference]: Start difference. First operand has 30 places, 30 transitions, 80 flow. Second operand 5 states and 1111 transitions. [2023-08-24 07:06:18,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 65 transitions, 296 flow [2023-08-24 07:06:18,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 65 transitions, 282 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-24 07:06:18,680 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 94 flow [2023-08-24 07:06:18,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=94, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-08-24 07:06:18,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-08-24 07:06:18,681 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 94 flow [2023-08-24 07:06:18,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:18,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:06:18,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:06:18,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 07:06:18,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:06:18,888 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)] === [2023-08-24 07:06:18,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:06:18,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1919436242, now seen corresponding path program 1 times [2023-08-24 07:06:18,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:06:18,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620828564] [2023-08-24 07:06:18,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:06:18,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:06:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:06:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:06:19,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:06:19,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620828564] [2023-08-24 07:06:19,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620828564] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:06:19,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:06:19,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:06:19,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909787612] [2023-08-24 07:06:19,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:06:19,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:06:19,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:06:19,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:06:19,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:06:19,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 615 [2023-08-24 07:06:19,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 219.2) internal successors, (1096), 5 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:19,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:06:19,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 615 [2023-08-24 07:06:19,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:06:19,142 INFO L124 PetriNetUnfolderBase]: 483/706 cut-off events. [2023-08-24 07:06:19,143 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-08-24 07:06:19,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 706 events. 483/706 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2132 event pairs, 106 based on Foata normal form. 20/528 useless extension candidates. Maximal degree in co-relation 1606. Up to 401 conditions per place. [2023-08-24 07:06:19,145 INFO L140 encePairwiseOnDemand]: 607/615 looper letters, 47 selfloop transitions, 4 changer transitions 17/68 dead transitions. [2023-08-24 07:06:19,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 68 transitions, 318 flow [2023-08-24 07:06:19,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:06:19,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:06:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1358 transitions. [2023-08-24 07:06:19,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36802168021680215 [2023-08-24 07:06:19,148 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1358 transitions. [2023-08-24 07:06:19,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1358 transitions. [2023-08-24 07:06:19,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:06:19,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1358 transitions. [2023-08-24 07:06:19,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 226.33333333333334) internal successors, (1358), 6 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:19,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 615.0) internal successors, (4305), 7 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:19,156 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 615.0) internal successors, (4305), 7 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:19,156 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 94 flow. Second operand 6 states and 1358 transitions. [2023-08-24 07:06:19,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 68 transitions, 318 flow [2023-08-24 07:06:19,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 68 transitions, 308 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-24 07:06:19,159 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 120 flow [2023-08-24 07:06:19,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-08-24 07:06:19,160 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2023-08-24 07:06:19,160 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 120 flow [2023-08-24 07:06:19,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 219.2) internal successors, (1096), 5 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:19,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:06:19,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:06:19,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 07:06:19,161 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)] === [2023-08-24 07:06:19,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:06:19,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1343250974, now seen corresponding path program 1 times [2023-08-24 07:06:19,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:06:19,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020789247] [2023-08-24 07:06:19,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:06:19,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:06:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:06:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:06:19,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:06:19,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020789247] [2023-08-24 07:06:19,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020789247] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:06:19,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582645845] [2023-08-24 07:06:19,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:06:19,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:06:19,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:06:19,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:06:19,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 07:06:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:06:19,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 07:06:19,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:06:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:06:19,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:06:19,735 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:06:19,736 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 262 [2023-08-24 07:06:42,111 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:06:42,112 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 118 [2023-08-24 07:06:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:06:42,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582645845] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 07:06:42,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 07:06:42,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 11 [2023-08-24 07:06:42,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997446513] [2023-08-24 07:06:42,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:06:42,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:06:42,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:06:42,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:06:42,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-08-24 07:06:42,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 615 [2023-08-24 07:06:42,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 120 flow. Second operand has 7 states, 7 states have (on average 200.14285714285714) internal successors, (1401), 7 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:42,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:06:42,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 615 [2023-08-24 07:06:42,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:06:42,738 INFO L124 PetriNetUnfolderBase]: 1042/1563 cut-off events. [2023-08-24 07:06:42,738 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2023-08-24 07:06:42,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3763 conditions, 1563 events. 1042/1563 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6342 event pairs, 221 based on Foata normal form. 3/1164 useless extension candidates. Maximal degree in co-relation 3738. Up to 550 conditions per place. [2023-08-24 07:06:42,748 INFO L140 encePairwiseOnDemand]: 607/615 looper letters, 71 selfloop transitions, 9 changer transitions 7/87 dead transitions. [2023-08-24 07:06:42,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 87 transitions, 474 flow [2023-08-24 07:06:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:06:42,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:06:42,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1458 transitions. [2023-08-24 07:06:42,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3386759581881533 [2023-08-24 07:06:42,752 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1458 transitions. [2023-08-24 07:06:42,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1458 transitions. [2023-08-24 07:06:42,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:06:42,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1458 transitions. [2023-08-24 07:06:42,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 208.28571428571428) internal successors, (1458), 7 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:42,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 615.0) internal successors, (4920), 8 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:42,764 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 615.0) internal successors, (4920), 8 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:42,765 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 120 flow. Second operand 7 states and 1458 transitions. [2023-08-24 07:06:42,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 87 transitions, 474 flow [2023-08-24 07:06:42,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 87 transitions, 455 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-24 07:06:42,769 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 170 flow [2023-08-24 07:06:42,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-24 07:06:42,771 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2023-08-24 07:06:42,771 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 170 flow [2023-08-24 07:06:42,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 200.14285714285714) internal successors, (1401), 7 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:42,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:06:42,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:06:42,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 07:06:42,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-24 07:06:42,979 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)] === [2023-08-24 07:06:42,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:06:42,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1214878275, now seen corresponding path program 1 times [2023-08-24 07:06:42,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:06:42,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740261788] [2023-08-24 07:06:42,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:06:42,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:06:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:06:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 07:06:43,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:06:43,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740261788] [2023-08-24 07:06:43,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740261788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:06:43,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:06:43,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:06:43,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926829372] [2023-08-24 07:06:43,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:06:43,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:06:43,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:06:43,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:06:43,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:06:43,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 615 [2023-08-24 07:06:43,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 219.6) internal successors, (1098), 5 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:43,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:06:43,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 615 [2023-08-24 07:06:43,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:06:43,261 INFO L124 PetriNetUnfolderBase]: 1307/2011 cut-off events. [2023-08-24 07:06:43,261 INFO L125 PetriNetUnfolderBase]: For 1656/1656 co-relation queries the response was YES. [2023-08-24 07:06:43,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5505 conditions, 2011 events. 1307/2011 cut-off events. For 1656/1656 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8600 event pairs, 500 based on Foata normal form. 54/1816 useless extension candidates. Maximal degree in co-relation 5477. Up to 819 conditions per place. [2023-08-24 07:06:43,270 INFO L140 encePairwiseOnDemand]: 609/615 looper letters, 76 selfloop transitions, 5 changer transitions 0/81 dead transitions. [2023-08-24 07:06:43,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 81 transitions, 496 flow [2023-08-24 07:06:43,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 07:06:43,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 07:06:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1145 transitions. [2023-08-24 07:06:43,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723577235772358 [2023-08-24 07:06:43,273 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1145 transitions. [2023-08-24 07:06:43,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1145 transitions. [2023-08-24 07:06:43,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:06:43,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1145 transitions. [2023-08-24 07:06:43,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:43,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 615.0) internal successors, (3690), 6 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:43,278 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 615.0) internal successors, (3690), 6 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:43,279 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 170 flow. Second operand 5 states and 1145 transitions. [2023-08-24 07:06:43,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 81 transitions, 496 flow [2023-08-24 07:06:43,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 81 transitions, 492 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 07:06:43,282 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 190 flow [2023-08-24 07:06:43,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-08-24 07:06:43,282 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2023-08-24 07:06:43,282 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 190 flow [2023-08-24 07:06:43,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 219.6) internal successors, (1098), 5 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:43,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:06:43,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:06:43,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 07:06:43,283 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)] === [2023-08-24 07:06:43,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:06:43,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1952077624, now seen corresponding path program 1 times [2023-08-24 07:06:43,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:06:43,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352133734] [2023-08-24 07:06:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:06:43,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:06:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:06:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:06:43,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:06:43,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352133734] [2023-08-24 07:06:43,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352133734] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:06:43,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434563301] [2023-08-24 07:06:43,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:06:43,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:06:43,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:06:43,417 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) [2023-08-24 07:06:43,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 07:06:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:06:43,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 07:06:43,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:06:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:06:43,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:06:43,749 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:06:43,750 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 262 [2023-08-24 07:06:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:06:48,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434563301] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:06:48,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:06:48,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-08-24 07:06:48,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006068188] [2023-08-24 07:06:48,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:06:48,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 07:06:48,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:06:48,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 07:06:48,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-24 07:06:48,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 615 [2023-08-24 07:06:48,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 190 flow. Second operand has 13 states, 13 states have (on average 214.15384615384616) internal successors, (2784), 13 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:48,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:06:48,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 615 [2023-08-24 07:06:48,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:06:48,870 INFO L124 PetriNetUnfolderBase]: 1355/2099 cut-off events. [2023-08-24 07:06:48,870 INFO L125 PetriNetUnfolderBase]: For 1720/1720 co-relation queries the response was YES. [2023-08-24 07:06:48,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5836 conditions, 2099 events. 1355/2099 cut-off events. For 1720/1720 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9450 event pairs, 308 based on Foata normal form. 4/1840 useless extension candidates. Maximal degree in co-relation 5806. Up to 689 conditions per place. [2023-08-24 07:06:48,879 INFO L140 encePairwiseOnDemand]: 607/615 looper letters, 64 selfloop transitions, 7 changer transitions 19/90 dead transitions. [2023-08-24 07:06:48,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 90 transitions, 542 flow [2023-08-24 07:06:48,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 07:06:48,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 07:06:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1751 transitions. [2023-08-24 07:06:48,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35589430894308943 [2023-08-24 07:06:48,883 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1751 transitions. [2023-08-24 07:06:48,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1751 transitions. [2023-08-24 07:06:48,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:06:48,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1751 transitions. [2023-08-24 07:06:48,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 218.875) internal successors, (1751), 8 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:48,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 615.0) internal successors, (5535), 9 states have internal predecessors, (5535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:48,891 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 615.0) internal successors, (5535), 9 states have internal predecessors, (5535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:48,891 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 190 flow. Second operand 8 states and 1751 transitions. [2023-08-24 07:06:48,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 90 transitions, 542 flow [2023-08-24 07:06:48,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 90 transitions, 538 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 07:06:48,895 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 168 flow [2023-08-24 07:06:48,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=168, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2023-08-24 07:06:48,895 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2023-08-24 07:06:48,895 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 168 flow [2023-08-24 07:06:48,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 214.15384615384616) internal successors, (2784), 13 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:48,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:06:48,897 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] [2023-08-24 07:06:48,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-24 07:06:49,101 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 [2023-08-24 07:06:49,102 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)] === [2023-08-24 07:06:49,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:06:49,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1485829918, now seen corresponding path program 1 times [2023-08-24 07:06:49,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:06:49,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748052268] [2023-08-24 07:06:49,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:06:49,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:06:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:06:49,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 07:06:49,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:06:49,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748052268] [2023-08-24 07:06:49,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748052268] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:06:49,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934692718] [2023-08-24 07:06:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:06:49,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:06:49,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:06:49,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:06:49,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 07:06:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:06:50,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-24 07:06:50,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:06:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 07:06:50,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:06:50,550 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:06:50,550 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 262 [2023-08-24 07:06:51,241 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:06:51,241 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 118 [2023-08-24 07:06:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 07:06:51,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934692718] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 07:06:51,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 07:06:51,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 15 [2023-08-24 07:06:51,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457426141] [2023-08-24 07:06:51,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:06:51,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:06:51,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:06:51,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:06:51,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2023-08-24 07:06:51,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 615 [2023-08-24 07:06:51,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 168 flow. Second operand has 7 states, 7 states have (on average 193.42857142857142) internal successors, (1354), 7 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:51,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:06:51,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 615 [2023-08-24 07:06:51,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:06:51,797 INFO L124 PetriNetUnfolderBase]: 1026/1532 cut-off events. [2023-08-24 07:06:51,798 INFO L125 PetriNetUnfolderBase]: For 1660/1660 co-relation queries the response was YES. [2023-08-24 07:06:51,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4392 conditions, 1532 events. 1026/1532 cut-off events. For 1660/1660 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6082 event pairs, 197 based on Foata normal form. 1/1348 useless extension candidates. Maximal degree in co-relation 4359. Up to 1353 conditions per place. [2023-08-24 07:06:51,803 INFO L140 encePairwiseOnDemand]: 610/615 looper letters, 49 selfloop transitions, 4 changer transitions 1/54 dead transitions. [2023-08-24 07:06:51,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 54 transitions, 337 flow [2023-08-24 07:06:51,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 07:06:51,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 07:06:51,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2023-08-24 07:06:51,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33495934959349594 [2023-08-24 07:06:51,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2023-08-24 07:06:51,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2023-08-24 07:06:51,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:06:51,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2023-08-24 07:06:51,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:51,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:51,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:51,809 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 168 flow. Second operand 3 states and 618 transitions. [2023-08-24 07:06:51,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 54 transitions, 337 flow [2023-08-24 07:06:51,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 54 transitions, 309 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-08-24 07:06:51,811 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 182 flow [2023-08-24 07:06:51,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-08-24 07:06:51,811 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2023-08-24 07:06:51,811 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 182 flow [2023-08-24 07:06:51,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 193.42857142857142) internal successors, (1354), 7 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:06:51,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:06:51,812 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] [2023-08-24 07:06:51,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-24 07:06:52,016 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 [2023-08-24 07:06:52,016 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)] === [2023-08-24 07:06:52,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:06:52,017 INFO L85 PathProgramCache]: Analyzing trace with hash -285739818, now seen corresponding path program 1 times [2023-08-24 07:06:52,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:06:52,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241402147] [2023-08-24 07:06:52,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:06:52,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:06:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:06:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:06:53,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:06:53,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241402147] [2023-08-24 07:06:53,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241402147] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:06:53,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530015814] [2023-08-24 07:06:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:06:53,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:06:53,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:06:53,208 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:06:53,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 07:06:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:06:53,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-24 07:06:53,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:06:53,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 07:06:53,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-24 07:06:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:06:53,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:06:58,363 INFO L322 Elim1Store]: treesize reduction 33, result has 93.8 percent of original size [2023-08-24 07:06:58,364 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 373 treesize of output 747 [2023-08-24 07:06:58,447 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:06:58,447 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 249 treesize of output 324 [2023-08-24 07:06:58,511 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:06:58,511 INFO L351 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 195 treesize of output 198 [2023-08-24 07:14:17,753 WARN L234 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 1668 DAG size of output: 2666 (called from [L 729] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-08-24 07:20:04,354 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-24 07:20:04,356 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 07:20:04,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-24 07:20:04,390 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 07:20:04,390 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 [2023-08-24 07:20:04,560 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 [2023-08-24 07:20:04,560 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 18ms.. [2023-08-24 07:20:04,561 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 07:20:04,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 07:20:04,562 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 07:20:04,562 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:20:04,564 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 07:20:04,564 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 07:20:04,566 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 07:20:04 BasicIcfg [2023-08-24 07:20:04,566 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 07:20:04,566 INFO L158 Benchmark]: Toolchain (without parser) took 855567.56ms. Allocated memory was 377.5MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 353.0MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 1.0GB. Max. memory is 16.0GB. [2023-08-24 07:20:04,567 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 377.5MB. Free memory was 355.5MB in the beginning and 355.3MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 07:20:04,567 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.61ms. Allocated memory is still 377.5MB. Free memory was 353.0MB in the beginning and 340.9MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 07:20:04,567 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.91ms. Allocated memory is still 377.5MB. Free memory was 340.9MB in the beginning and 338.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 07:20:04,567 INFO L158 Benchmark]: Boogie Preprocessor took 26.52ms. Allocated memory is still 377.5MB. Free memory was 338.8MB in the beginning and 336.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 07:20:04,568 INFO L158 Benchmark]: RCFGBuilder took 387.03ms. Allocated memory is still 377.5MB. Free memory was 336.7MB in the beginning and 313.1MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-24 07:20:04,568 INFO L158 Benchmark]: TraceAbstraction took 854889.96ms. Allocated memory was 377.5MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 312.3MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 996.7MB. Max. memory is 16.0GB. [2023-08-24 07:20:04,569 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 377.5MB. Free memory was 355.5MB in the beginning and 355.3MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 209.61ms. Allocated memory is still 377.5MB. Free memory was 353.0MB in the beginning and 340.9MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.91ms. Allocated memory is still 377.5MB. Free memory was 340.9MB in the beginning and 338.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.52ms. Allocated memory is still 377.5MB. Free memory was 338.8MB in the beginning and 336.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 387.03ms. Allocated memory is still 377.5MB. Free memory was 336.7MB in the beginning and 313.1MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 854889.96ms. Allocated memory was 377.5MB in the beginning and 1.7GB in the end (delta: 1.3GB). Free memory was 312.3MB in the beginning and 1.5GB in the end (delta: -1.2GB). Peak memory consumption was 996.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.6s, 257 PlacesBefore, 31 PlacesAfterwards, 277 TransitionsBefore, 29 TransitionsAfterwards, 2688 CoEnabledTransitionPairs, 8 FixpointIterations, 179 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 65 TrivialYvCompositions, 14 ConcurrentYvCompositions, 22 ChoiceCompositions, 325 TotalNumberOfCompositions, 3886 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3116, independent: 3026, independent conditional: 0, independent unconditional: 3026, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1563, independent: 1542, independent conditional: 0, independent unconditional: 1542, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3116, independent: 1484, independent conditional: 0, independent unconditional: 1484, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 1563, unknown conditional: 0, unknown unconditional: 1563] , Statistics on independence cache: Total cache size (in pairs): 76, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 18ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 18ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 18ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 18ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 306 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: 854.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 345 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 345 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 965 IncrementalHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 965 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 138 SyntacticMatches, 8 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=5, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 50.2s InterpolantComputationTime, 241 NumberOfCodeBlocks, 241 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 315 ConstructedInterpolants, 0 QuantifiedInterpolants, 4247 SizeOfPredicates, 52 NumberOfNonLiveVariables, 1100 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 20/30 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